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ROHM BD6083GUL handbook

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1. 0 0 Sensor LED 0 VF control ALC SGND E 86246 eg 2 9 Fig 2 Block Diagram Application Circuit Example 1 www rohm com 2010 ROHM Co Ltd All rights reserved 6 45 LEDGND LDO10 u F 6 3V DO20 x F 6 3V LDO30 pn F 6 3V 10040 F 6 3V Technical Note 2 6LED Main Back Light 2010 07 Rev A BD6083GUL Block Diagram Application Circuit Example 2 5LED ALC PWM 1uF 10V 1yF 10V Technical Note VOUT Charge Pump 1yF 10V x1 x1 5 x2 2 2uF 10V LED1 2 lt LED2 Charge Pump meen Mode Control Voltage lt LED terminal voltage feedback N LEDS 09 0 82 vi lt 5LED LED4 03 N Main Back Light lt lt T i cal uan 82 0 ScL LED6 From CPU 69 4 Q C Level interface TSD lt SDA yo e gt Shift Digital Control LEDGND From LCM 1 WPWMIN 6 i LDO1 LDO1O lt ALS gt Vo Selectable ci VREF oils 5 6 SBIAS 5 LDO2 DO2O O Selectable ES 1621 10 150 F 6 3V N LDO3 LDO30 Vo Selectable 69 21 lo 150mA bu u F 6 3V Wm LDO4 10040 SEND 2 ALC Vo Selectable 10 150 F 6 3V 0 69 9
2. 0110000 9 8 mA 1110000 22 6 mA 0110001 10 0 mA 1110001 22 8 mA 0110010 10 2 mA 1110010 23 0 mA 0110011 10 4 mA 1110011 23 2 mA 0110100 10 6 mA 1110100 23 4 mA 0110101 10 8 mA 1110101 23 6 mA 0110110 11 0 mA 1110110 23 8 mA 0110111 11 2 mA 1110111 24 0 mA 0111000 11 4 mA 1111000 24 2 0111001 11 6 1111001 24 4 0111010 11 8 1111010 24 6 0111011 12 0 mA 1111011 24 8 mA 0111100 12 2 1111100 25 0 mA 0111101 12 4 1111101 25 2 0111110 12 6 mA 1111110 25 4 mA 0111111 12 8 mA 1111111 25 6 21 45 2010 07 2010 ROHM Co Ltd All rights reserved BD6083GUL Technical Note Address 09h lt Main Current slope time setting gt Address R W Bit7 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 09h W THL 3 2 1 THL O TLH 3 TLH 2 TLH 1 Initial Value C7h 1 1 0 0 0 1 1 1 Bit 7 4 THL 3 0 Main LED current Down transition per 0 2mA step 0000 0 256 ms 0001 0 512 ms 0010 1 024 ms 0011 2 048 ms 0100 4 096 ms 0101 8 192 ms 0110 16 38 ms 0111 32 77 ms 1000 65 54 ms 1001 131 1 ms 1010 196 6 ms 1011 262 1 ms 1100 327 7 ms In
3. 14 8 0001010 2 2 mA 1001010 15 0 0001011 2 4 mA 1001011 15 2 0001100 2 6 mA 1001100 15 4 0001101 2 8 mA 1001101 15 6 0001110 3 0 mA 1001110 15 8 mA 0001111 3 2 mA 1001111 16 0 0010000 3 4 1010000 16 2 0010001 3 6 1010001 16 4 0010010 3 8 mA 1010010 16 6 0010011 4 0 mA Initial Value 1010011 16 8 mA 0010100 4 2mA 1010100 17 0 mA 0010101 4 4 mA 1010101 17 2 0010110 4 6 mA 1010110 17 4 mA 0010111 4 8 mA 1010111 17 6 mA 0011000 5 0 mA 1011000 17 8 mA 0011001 5 2 mA 1011001 18 0 mA 0011010 5 4 mA 1011010 18 2 mA 0011011 5 6 1011011 18 4 0011100 5 8 mA 1011100 18 6 mA 0011101 6 0 mA 1011101 18 8 mA 0011110 6 2 mA 1011110 19 0 mA 0011111 6 4 1011111 19 2 0100000 6 6 1100000 19 4 0100001 6 8 1100001 19 6 0100010 7 0 1100010 19 8 0100011 7 2 mA 1100011 20 0 mA 0100100 7 4 mA 1100100 20 2 0100101 7 6 1100101 20 4 0100110 7 8 mA 1100110 20 6 mA 0100111 8 0 mA 1100111 20 8 mA 0101000 8 2 1101000 21 0 mA 0101001 8 4 mA 1101001
4. 0 2 mA 1000000 13 0 0000001 0 4 mA 1000001 13 2 0000010 0 6 mA 1000010 13 4 0000011 0 8 1000011 13 6 0000100 1 0 mA 1000100 13 8 mA 0000101 1 2 1000101 14 0 0000110 14 1000110 14 2 mA 0000111 1 6 1000111 14 4 mA 0001000 1 8mA 1001000 14 6 mA 0001001 2 0 1001001 14 8 0001010 2 2 1001010 15 0 0001011 2 4mA 1001011 15 2 mA 0001100 2 6 mA 1001100 15 4 0001101 2 8 mA 1001101 15 6 mA 0001110 3 0 mA 1001110 15 8 0001111 3 2 1001111 16 0 mA 0010000 3 4 mA 1010000 16 2 mA 0010001 3 6 mA 1010001 16 4 0010010 3 8 1010010 16 6 0010011 4 0 1010011 16 8 0010100 4 2 1010100 17 0 0010101 4 4mA 1010101 17 2 mA 0010110 4 6 1010110 17 4 0010111 4 8 1010111 17 6 0011000 5 0 1011000 17 8 0011001 5 2 mA 1011001 18 0 mA 0011010 5 4 mA 1011010 18 2 0011011 5 6 1011011 18 4 0011100 5 8 1011100 18 6 0011101 6 0 1011101 18 8 mA 0011110 6 2 1011110 19 0 mA 0011111 6 4
5. 1011111 19 2 mA 0100000 6 6 mA 1100000 19 4 0100001 6 8 1100001 19 6 mA 0100010 7 0 mA 1100010 19 8 mA 0100011 7 2 1100011 20 0 mA Initial Value 0100100 7 4 mA 1100100 20 2 mA 0100101 7 6 mA 1100101 20 4 0100110 7 8 1100110 20 6 0100111 8 0 mA 1100111 20 8 mA 0101000 8 2 1101000 21 0 0101001 8 4 mA 1101001 21 2 0101010 8 6 1101010 21 4 0101011 8 8 1101011 21 6 0101100 9 0 mA 1101100 21 8 0101101 9 2 1101101 22 0 0101110 9 4 1101110 22 2 0101111 9 6 1101111 22 4 0110000 9 8 mA 1110000 22 6 mA 0110001 10 0 mA 1110001 22 8 0110010 10 2 1110010 23 0 0110011 10 4 1110011 23 2 0110100 10 6 1110100 23 4 0110101 10 8 1110101 23 6 mA 0110110 11 0 1110110 23 8 0110111 11 2 1110111 24 0 mA 0111000 11 4 1111000 24 2 0111001 11 6 mA 1111001 24 4 0111010 11 8 mA 1111010 24 6 mA 0111011 12 0 1111011 24 8 mA 0111100 12 2 1111100 25 0 mA 0111101 12 4 mA 1111101 25 2 0111110 12 6 mA
6. 21 2 mA 0101010 8 6 mA 1101010 21 4 mA 0101011 8 8 1101011 21 6 mA 0101100 9 0 mA 1101100 21 8 mA 0101101 9 2 mA 1101101 22 0 mA 0101110 9 4mA 1101110 22 2 0101111 9 6 1101111 22 4 0110000 9 8 mA 1110000 22 6 mA 0110001 10 0 mA 1110001 22 8 0110010 10 2 1110010 23 0 mA 0110011 10 4 1110011 23 2 0110100 10 6 1110100 23 4 0110101 10 8 1110101 23 6 mA 0110110 11 0 mA 1110110 23 8 0110111 11 2 1110111 24 0 0111000 11 4 1111000 24 2 0111001 11 6 1111001 24 4 0111010 11 8 1111010 24 6 0111011 12 0 mA 1111011 24 8 0111100 12 2 1111100 25 0 0111101 12 4 1111101 25 2 0111110 12 6 mA 1111110 25 4 mA 0111111 12 8 mA 1111111 25 6 25 45 2010 07 Rev A 2010 ROHM Co Ltd All rights reserved BD6083GUL Technical Note Address 0Eh lt LED Max Current setting gt Address RW Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 BitO OEh 191 6 191 5 191 4 191 3 191 2 IU1 1 IU1 0 Initial Value 63h 1 1 0 0 0 1 1 Bit7 Not used Bit 6 0 1U1 6 0 LED Max Current for ALC 0000000
7. 0001000 1 8 mA 1001000 14 6 0001001 2 0 1001001 14 8 0001010 2 2 1001010 15 0 0001011 2 4 mA 1001011 15 2 0001100 2 6 mA 1001100 154 0001101 2 8 mA 1001101 15 6 0001110 3 0 1001110 15 8 0001111 3 2 1001111 16 0 0010000 3 4 mA 1010000 16 2 0010001 3 6 1010001 16 4 0010010 3 8 1010010 16 6 0010011 4 0mA 1010011 16 8 0010100 4 2 mA 1010100 17 0 0010101 4 4 mA 1010101 17 2 0010110 4 6 mA 1010110 17 4 0010111 4 8 mA 1010111 17 6 0011000 5 0 mA 1011000 17 8mA 0011001 5 2 mA 1011001 18 0 mA 0011010 5 4 mA 1011010 18 2 mA 0011011 5 6 mA 1011011 18 4 mA 0011100 5 8 mA 1011100 18 6 mA 0011101 6 0 1011101 18 8 0011110 6 2 1011110 19 0 0011111 6 4 1011111 19 2 0100000 6 6 1100000 19 4 0100001 6 8 1100001 19 6 0100010 7 0 1100010 19 8 0100011 7 2 1100011 20 0 0100100 7 4 mA 1100100 20 2 0100101 7 6 1100101 20 4 0100110 7 8 110011
8. 1001111 16 0 mA 0010000 3 4 1010000 16 2 0010001 3 6 mA 1010001 16 4 0010010 3 8 1010010 16 6 0010011 4 0 mA 1010011 16 8 mA 0010100 4 2 mA 1010100 17 0 mA 0010101 4 4 mA 1010101 17 2 0010110 4 6 mA 1010110 17 4 mA 0010111 4 8 1010111 17 6 mA 0011000 5 0 mA 1011000 17 8 mA 0011001 5 2 mA 1011001 18 0 mA 0011010 5 4 mA 1011010 18 2 mA 0011011 5 6 1011011 18 4 0011100 5 8 mA 1011100 18 6 0011101 6 0 1011101 18 8 0011110 6 2 mA 1011110 19 0 mA 0011111 6 4 mA 1011111 19 2 mA 0100000 6 6 mA 1100000 19 4 mA 0100001 6 8 mA 1100001 19 6 mA 0100010 7 0 mA 1100010 19 8 mA 0100011 7 2 mA 1100011 20 0 mA 0100100 7 4 mA 1100100 20 2 0100101 7 6 mA 1100101 20 4 0100110 7 8 1100110 20 6 mA 0100111 8 0 mA 1100111 20 8 mA 0101000 8 2 mA 1101000 21 0 mA 0101001 8 4 mA 1101001 21 2 mA 0101010 8 6 1101010 21 4 mA 0101011 8 8 1101011 21 6 mA 0101100 9 0 mA 1101100 21 8 mA 0101101 9 2 mA 1101101 22 0 mA 0101110 9 4 mA 1101110 22 2 mA 0101111 9 6 1101111 22 4
9. Photo Diode Photo Transistor Photo IC Linear LOG Incorporates an auto gain switching function for suppressing an illumination intensity sensor current at high illumination intensity and improving sensitivity at low illumination intensity Capable of customizing an LED current value according to a table setting Slope control loading and an independent control change are possible 3 Charge Pump DC DC for LED driver It has x1 x1 5 x2 mode that will be selected automatically The most suitable voltage up magnification is controlled automatically by LED port voltage Soft start functions Over voltage protection Auto return type Over current protection Auto return type loading 4 4ch Series Regulator LDO t has selectable output voltage by the register 16 steps LDO1 LDO2 LDO3 LDO4 lomax 150mA 5 Thermal shutdown 6 BUS FS mode max 400 kHz Compatibility Absolute Maximum Ratings 25 C Parameter Symbol Ratings Unit Maximum Voltage VMAX 7 V Power Dissipation Pd 1280 Note mW Operating Temperature Range Topr 30 85 C Storage Temperature Range Tstg 55 150 C Note Power dissipation deleting is 10 24mW C when it s used in over 25 C It s deleting is on the board that is ROHM s standard G Operating Conditions VBAT2VIO Ta 30 85 C Parameter Symbol Limits Unit VBAT Input Voltage VBAT 2 7 5 5 V VIO Pin Voltage VIO 1 65
10. a g 8 Fig 3 Block Diagram Application Circuit Example 2 www rohm com 2010 ROHM Co Ltd All rights reserved 7 45 2010 07 Rev A BD6083GUL Block Diagram Application Circuit Example 3 4LED 2LED ALC PWM 2 2uF 10V VIO Voltage 1uF A0V 1uF 10V Charge Pump x1 x1 5 x2 OVP Charge Pump Mode Control LED terminal voltage feedback t vio A 2 i SCL From CPU 9 4 Level PC interface TSD SDA yo e gt Shift Digital Control I From LCM 1 WEWMIN B3 i m ALS 8 1 VREF 9 SBIAS SOOO 5 L Po 9 Sensor LED Wm VF control SGND ALC E ALC 86255 GC1 6 60 69 9 5 5 9 S Technical Note uF 10V 2 6 50 Main Back Light LL 23 o LDO1 Vo Selectable lo 150mA LDO2 Vo Selectable 1 150 LDO3 Vo Selectable lo 150mA LDO4 Vo Selectable lo 150mA Fig 4 Block Diagram Application Circuit Example 3 www rohm com 2010 ROHM Co Ltd All rights reserved 8 45 LEDGND LDO10 u F 6 3V DO20 x F 6 3V LDO30 pn F 6 3V 10040 F 6 3V gt 2LED Sub Back Light or Key Back Light 2010 07 Rev A BD6083GUL Technical Note Pin Arrangement Bottom View F T4 SGND SBIAS 1 55 5 GC1
11. 0 2 0 25 V Vfis forward direction of LED Drive Ability IOUT 150 mA VBAT23 2V VOUT 3 9V Switching Frequency fosc 0 8 1 0 1 2 MHz Over Voltage Protection Detect Voltage 26 7 Over Current Protection _ 250 375 mA VOUT 0V Detect Current Sensor Interface SBIAS Output Voltage VoS 2 85 3 0 3 15 V lo 200yA SBIAS Maximum Output Current lomaxS 30 m SBIAS Discharge Resister at OFF PROFES 7 0 am VoS SSENS Input Range VISS 0 255 256 V ADC Resolution ADRES 8 bit ADC Integral Calculus ADINL 3 _ 3 LSB Non linearity ADC Differential Calculus ADDNL 4 _ 1 LSB Non linearity 2 45 2010 07 Rev A 2010 ROHM Co Ltd All rights reserved BD6083GUL Technical Note Electrical Characteristics Unless otherwise specified Ta 25 C VBAT 3 6V VIO 1 8V Limits Parameter Symbol lt Unit Condition Min Typ Max Regulator LDO1 1 164 1 20 1 236 V 10 50 1 261 1 30 1 339 V 10 50 1 455 1 50 1 545 V 10 50 1 552 1 60 1 648 V 10 50 1 746 1 80 1 854 V lo 50mA Initial Voltage 2 134 2 20 2 266 V 10 50 2 328 2 40 2 472 V 10 50 2 425 2 50 2 575 V 10 50 2 522 260 2678 V lo 50mA 2 619 2 70 2 781 V 10 50 2 716 2 80 2 884 V lo 50mA 2 813 2 90 2 987 V lo 50mA 2 910
12. Bit2 Bit1 BitO 05h W IW5 6 IW5 5 IW5 4 IW5 3 IW5 2 IW5 1 IW5 0 Initial Value 00h 0 0 0 0 0 0 0 Bit7 Not used Bit 6 0 IW5 6 0 LEDS5 Current setting 0000000 0 2 mA initial Value 1000000 13 0 mA 0000001 0 4 mA 1000001 13 2 0000010 0 6 1000010 13 4 0000011 0 8 mA 1000011 13 6 mA 0000100 1 0 mA 1000100 13 8 0000101 1 2 mA 1000101 14 0 0000110 1 4 1000110 14 2 0000111 1 6 mA 1000111 14 4 mA 0001000 1 8 mA 1001000 14 6 0001001 2 0 1001001 14 8 0001010 2 2 1001010 15 0 0001011 2 4 mA 1001011 15 2 0001100 2 6 mA 1001100 15 4 0001101 2 8 mA 1001101 15 6 0001110 3 0 1001110 15 8 0001111 3 2 mA 1001111 16 0 0010000 3 4 mA 1010000 16 2 0010001 3 6 1010001 16 4 0010010 3 8 1010010 16 6 0010011 4 0 mA 1010011 16 8 0010100 4 2 mA 1010100 17 0 0010101 4 4 mA 1010101 17 2 0010110 4 6 mA 1010110 17 4 0010111 4 8 mA 1010111 17 6 0011000 5 0 1011000 17 8 0011001 5 2 1011001 18 0 mA 0011010 5 4 1011010 18
13. The main other1 and other2 are controllable to each Enable and current setting Other1 Other2 6LEDs 5LEDs 5LEDs 1LED 4LEDs 4LEDs 1 LED 4LEDs 2 LEDs 4LEDs 1 LED 1LED 3LEDs 3LEDs 1 LED 3LEDs 2 LEDs 3LEDs 1 LED 1LED www rohm com 32 45 2010 07 Rev A 2010 ROHM Co Ltd All rights reserved BD6083GUL Technical Note ALC Auto Luminous Control LCD backlight current adjustment is possible in the basis of the data detected by external ambient light sensor Extensive selection of the ambient light sensors Photo Diode Photo Transistor Photo IC linear logarithm is possible by building adjustment feature of Sensor bias gain adjustment and offset adjustment Ambient data is changed into ambient level by digital data processing and it can be read through PCI F Register setting can customize a conversion to LED current Initial Value is pre set Natural dimming of LED driver is possible with the adjustment of the current transition speed 1 Always ON Intermittence PWM enabling 74 em urgeri ORDEN 1 1 l WPWMIN peas SBAS 4 X Conversion IM y gt Mode Select 1 5 22 I 0 LCD Y Backlight pe 1 DC current setup Main Group setup i i i Average Y i Sensor SSENS Current Slope US Logarithmic Conv C Conversion process ud 1 Ambie
14. current may be shut in this function it can possible to decrease the current consumption SBIAS and SSENS pin are pull down in internal when there are OFF SBIAS circuit has the two modes Usually ON mode or intermittent mode Register ADCYC Register SBIASON ALCEN 1 ADCYC lt ADC Cycle SBIAS Output I Twait 64ms typ Wait time When BIASON 1 ADC Movement A gt TAD 16 4ms typ 1 A D conversion time GC1 GC2 GC1 62 00 3 0 1 3 0 ee i Toprt 80 4ms typ Operate time Fig 22 5 Average filter Average filter is built in to rid noise or flicker Average is 16 times 6 Ambient level detection AD start signal Averaged A D value is converted to Ambient level corresponding to Gain control Ambient level is judged to rank of 16 steps by ambient data Ambient level is output through Register AMB 3 0 TADone 1 024ms 16 times measurement GAIN 0 1 GAIN Setting Low High Ambient Level SSENS Voltage Oh VoS x 0 256 VoS x 0 256 th VoS x 1 256 VoS x 1 256 2h VoS x 2 256 VoS x 2 256 a VoS x 3 256 VoS x 3 256 VoS x4 256 VoS x4 256 VoS x 5 256 VoS x 5 256 VoS x 7 256 VoS x 6 256 VoS x 8 256 VoS x 7 256 sh
15. following block DC DC Charge Pump LED Driver SBIAS LDO1 LDO2 LDO3 1004 The thermal shutdown function is detection temperature that it works is about 195 C Detection temperature has a hysteresis and detection release temperature is about 175 C Design reference value www rohm com 2010 ROHM Co Ltd All rights reserved 29 45 BD6083GUL Technical Note DC DC Start DC DC circuit operates when any LED turns ON DCDCFON 0 When start of theDC DC circuit is done it has the soft start function to prevent a rush current Force of VBAT and VIO is to go as follows sd Iac I K i 1 1 D i 1 VIO OON NE 1 fm TviooN min 0 1ms 1 gt i TviooFF min 0 1ms RESETB TRSTB min 0 1ms TRST min Oms EN 7 Tsorr VOUT LEDcurrent 1 An EN signal means the following in the upper figure EN MLEDEN W EN LED The LED lighting control of a setup of connection VOUT But as for gt Trsp typ 195 a protection function functions and EN signal doesn t become effective Tsorr changes by the capacitor connected to VOUT and inside OSC Tsort is Typ 200us when the output capacitor of VOUT 1 0uF Fig 17 Over Voltage protection Over Current protection DC DC circuit outp
16. individually Register THL 3 0 Register TLH 3 0 Main LED current changes as follows at the time as the slope TLH THL is setup of time of the current step 2 256 THL 3 0 Main LED current Up Down transition Speed is set individually Fig 25 Main LED current time 9 LED current reset when mode change When mode is changed ALC Non ALC it can select the way to sloping Register MDCIR 0 LED current non reset when mode change meneo 1 LED current reset when mode change g iut 8 a c S time t 5 o a c gt MDCIR 1 time 38 45 2010 07 Rev A 2010 ROHM Co Ltd All rights reserved BD6083GUL 10 Current adjustment When the register setting permits it PWM drive by the external terminal WPWMIN is possible Register WPWMEN t is suitable for the intensity correction by external control because PWM based on Main LED current of register setup or ALC control AREE WPWMIN External Pin Main group LED current L Normal operation H Normal operation L Forced OFF H Normal operation Normal operation depends on the setup of each register DC DC Output WPWMIN input www rohm com EN o Internal Soft Start Time gt WPWMEN LED Current it means MLEDEN or W EN It
17. is possible to make ita WPWMIN input and WPWMEN 1 in front of EN A PWM drive becomes effective after the time of an LED current standup Technical Note When rising during PWM operation as for the standup time of a DC DC output only the rate of PWM Duty becomes late Appearance may be influenced when extremely late frequency and extremely low Duty are inputted Please secure 250 us or more of H sections at the time of PWM pulse Force Fig 26 39 45 2010 ROHM Co Ltd All rights reserved 2010 07 Rev A BD6083GUL Technical Note evo When the RESETB pin is Low the input buffers SDA and SCL are disabling for the Low consumption power When RESETB L output is fixed at H Level shifter Logic SCL SDA Fig 27 Special care should be taken because a current path may be formed via a terminal protection diode depending on an I O power on sequence or an input level G About the start of LDO1 LDO4 It must start as follows TvBATON 1 TvBATOFF 1 lt gt TviooFF min 1 RESETB TRSTB min 0 1ms gt 191 TviooN min 0 1ms TRST min LDO1ENorLDO2ENor z LDO3EN or LDO4EN lt 1 i i TRISE max 1ms LDO1O or LDO2O or LDO3O or LDO4O LDO output i Fig 28 lt Start Sequence gt VBAT ON Enough rise up VIO ON Enough rise up Reset release LDO ON Regis
18. l VBAT GND Reset input L reset H reset cancel H 10 D4 SDA GND data input output 11 C4 SCL VBAT GND clock input H 12 A5 CPGND VBAT Ground B 13 A3 GND1 VBAT Ground B 14 C1 LEDGND VBAT Ground B 15 A4 C1N GND Charge Pump capacitor is connected F 16 C5 C1P GND Charge Pump capacitor is connected G 17 B5 C2N I O VBAT GND Charge Pump capacitor is connected F 18 C6 C2P I O GND Charge Pump capacitor is connected G 19 D6 VOUT 0 GND Charge Pump output pin A 20 A2 LED1 GND LED is connected 1 for LCD Back Light E 21 B1 LED2 GND LED is connected 2 for LCD Back Light E 22 B2 LED3 GND LED is connected 3 for LCD Back Light E 23 C2 LED4 GND LED is connected 4 for LCD Back Light E 24 D1 LED5 GND LED is connected 5 for LCD Back Light E 25 D2 LED6 GND LED is connected 6 for LCD Back Light E 26 F3 SBIAS 0 GND Bias output for the Ambient Light Sensor Q 27 E1 SSENS GND Ambient Light Sensor input N 28 E2 GC1 0 GND Ambient Light Sensor gain control output 1 29 D3 GC2 0 GND Ambient Light Sensor gain control output 2 30 2 SGND VBAT Ground B 31 B3 WPWMIN GND External PWM input for Back Light L 32 E6 LDO1O 0 GND LDO1 output pin Q 33 E5 LDO2O 0 GND LDO2 output pin Q 34 E4 LDO3O 0 GND LDO3 output pin Q 35 E3 LDO4O 0 GND LDO4 output pin Q setup of a register is separately necessary to
19. the sensor 5 SSENS Sense voltage input terminal gt 0 SSENS Voltage lout x Rs 0 Fig 21 Ambient rohm aruma 34 45 2010 07 Rev A 2010 ROHM Co Ltd All rights reserved BD6083GUL Technical Note 3 Gain control Sensor gain switching function is built in to extend the dynamic range t is controlled by register setup When automatic gain control is off the gain status can be set upin the manual Register GAIN GC1 and GC2 are outputted corresponding to each gain status High Gain mode SSENS Voltage Low Gain mode Ambient Auto Gain mode SSENS Voltage Ambient Example 1 Use BH1621FVC Example 2 Example 3 Application example Resister values are relative Operating mode Auto Auto Fixed GAIN setting 0 0 1 Gain status High Low High Low GC1 output IL L IL L IL GC2 output L TL L IL L JL This means that it becomes High with A D measurement cycle synchronously 1 Set up the relative ratio of the resistance in the difference in the brightness change of the High Gain mode and the Low Gain mode carefully 2010 07 Rev A www rohm com 35 45 2010 ROHM Co Ltd All rights reserved BD6083GUL 4 A D conversion The detection of ambient data is done periodically for the low power SBIAS and ADC are turned off except for the ambient measurement Technical Note The sensor
20. 0 20 6 0100111 8 0 1100111 20 8 0101000 8 2 1101000 21 0 mA 0101001 8 4 1101001 21 2 0101010 8 6 1101010 21 4 0101011 8 8 1101011 21 6 mA 0101100 9 0 mA 1101100 21 8 0101101 9 2 1101101 22 0 0101110 9 4 1101110 22 2 0101111 9 6 1101111 22 4 0110000 9 8 mA 1110000 22 6 0110001 10 0 mA 1110001 22 8 0110010 10 2 mA 1110010 23 0 mA 0110011 10 4 1110011 23 2 0110100 10 6 mA 1110100 23 4 mA 0110101 10 8 mA 1110101 23 6 0110110 11 0 mA 4110110 23 8 mA 0110111 11 2 mA 1110111 24 0 mA 0111000 11 4 1111000 24 2 mA 0111001 11 6 mA 1111001 24 4 0111010 11 8 mA 1111010 24 6 mA 0111011 12 0 1111011 24 8 0111100 12 2 1111100 25 0 mA 0111101 12 4 1111101 25 2 0111110 12 6 1111110 25 4 0111111 12 8 1111111 25 6 Www rohm com 19 45 2010 07 Rev A 2010 ROHM Co Ltd All rights reserved BD6083GUL Technical Note Address 05h lt LED5 Current setting Independence control gt Address R W Bit7 Bit6 Bit5 Bit4 Bit3
21. 1 50 V 0011 1 60 V 0100 1 80 V Initial Value 0101 220 0110 2 40 V 0111 2 50 V 1000 2 60 V 1001 2 70 V 1010 2 80 V 1011 2 90 V 1100 3 00 V 1101 3 10 V 11107 3 20 V 11117 3 30 V 27 45 2010 07 Rev A 2010 ROHM Co Ltd All rights reserved BD6083GUL Technical Note Address 15h lt LDO3 Vout Control LDO4 Vout Control gt Address RW Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit BitO 15h R W LDOAVSEL3LDOAVSEL2LDOAVSEL1 LDOAVSELOLDOSVSEL3 LDOSVSEL2LDOSVSEL 1 LDOSVSELO Initial Value A4h 1 0 1 0 0 1 0 0 Bit 7 4 LDOAVSEL 3 0 0000 1 20V 00017 1 30 V 0010 1 50 V 0011 1 60 V 0100 1 80 V 0101 2 20 V 0110 240V 0111 2 50 V 1000 2 60 V 1001 2 70 V 1010 2 80 V Initial Value 1011 2 90 V 1100 3 00 V 1101 3 10 V 1110 3 20 V 1111 3 30 V Bit 3 0 LDO3VSEL 3 0 0000 1 20 V 00017 1 30 V 0010 1 50 V 0011 1 60 V 0100 1 80 Initial Value 0101 2 20 V 0110 2 40 V 0111 2 50 V 1000 2 60 V 1001 2 70 V 1010 2 80 V 1011 2 90 V 1100 3 00 V 11017 340 V 1110 3 20 V 1111 3 30 V 28 45 2010 07 Rev A 2010 ROHM Co Ltd All rights reserved BD6083GUL Technical Note Reset There are two kin
22. 111001 24 4 0111010 11 8 mA 1111010 24 6 mA 0111011 12 0 1111011 24 8 0111100 12 2 1111100 25 0 0111101 12 4 1111101 25 2 0111110 12 6 1111110 25 4 0111111 12 8 1111111 25 6 Www rohm com 20 45 2010 07 Rev A 2010 ROHM Co Ltd All rights reserved BD6083GUL Technical Note Address 06h lt LED6 Current setting Independence control gt Address RAW Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 BitO 06h W IW6 6 IW6 5 IW6 4 IW6 3 IW6 2 IW6 1 IW6 0 Initial Value 0011 0 0 0 0 0 0 0 Bit7 Not used Bit 6 0 IW6 6 0 LED6 Current setting 0000000 0 2 mA initial Value 1000000 13 0 mA 0000001 0 4 mA 1000001 13 2 0000010 0 6 mA 1000010 13 4 0000011 0 8 mA 1000011 13 6 mA 0000100 1 0 mA 1000100 13 8 mA 0000101 1 2 mA 1000101 14 0 mA 0000110 14 1000110 14 2 0000111 1 6 1000111 14 4 0001000 1 8mA 1001000 14 6 mA 0001001 2 0 mA 1001001 14 8 0001010 2 2 mA 1001010 15 0 0001011 2 4 mA 1001011 15 2 0001100 2 6 mA 1001100 15 4 0001101 2 8 mA 1001101 15 6 0001110 3 0 mA 1001110 15 8 mA 0001111 3 2 mA
23. 1111110 25 4 mA 0111111 12 8 mA 1111111 25 6 mA 26 45 2010 07 Rev A 2010 ROHM Co Ltd All rights reserved BD6083GUL Technical Note Address 13h lt LDO Power Control Address Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit BitO 13h W R LDO4EN LDO2EN LDO1EN Initial Value OOh 0 0 0 0 Bit 7 4 Not used Bit3 LDO4EN 1004 control ON OFF 0 LDO4 OFF Initial Value LDO4 ON Bit2 LDO3EN LDOS control ON OFF 0 LDO3 OFF Initial Value 1 LDO3 ON Bit1 LDO2EN LDO2control ON OFF 0 LDO2 OFF Initial Value LDO2 LDO1EN 1001 control ON OFF Q LDO1 OFF Initial Value 1 LDO1 ON Address 14h lt LDO1 Vout Control LDO2 Vout Control gt Address RW Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 BitO 14h R W LDO2VSEL3LDO2VSEL2LDO2VSEL 1 LDO2VSELOLDO1VSEL3LDO1VSEL2LDO1VSEL1 LDO1VSELO Initial Value 74h 0 1 1 1 0 1 0 0 Bit 7 4 LDO2VSEL 3 0 0000 1 20V 0001 1 30V 0010 1 50 0011 1 60 V 0100 1 80 V 0101 2 20 V 0110 2 40 V 0111 2 50 V Initial Value 1000 2 60 V 1001 2 70 V 1010 2 80 V 1011 2 90 V 1100 3 00 V 1101 3 10 V 11107 3 20 V 11117 3 30 V Bit 3 0 LDO1VSEL 3 0 0000 1 20 V 0001 1 30 V 0010
24. 1pin of product is at the upper left when you hold reel on the left hand and you pull out the tape on the right hand 3 15 0 05 3 15 0 05 0 55 5 35 00 25 0 05 0 05 00 15 INDEX POST 0 325 0 05 O O O O 0 5 5 gt Y Order quantity needs to be multiple of the minimum quantity 1pin 0 325 0 05 www rohm com 2010 ROHM Co Ltd All rights reserved 45 45 RENA Notice Notes No copying or reproduction of this document in part or in whole is permitted without the consent of ROHM Co Ltd The content specified herein is subject to change for improvement without notice The content specified herein is for the purpose of introducing ROHM s products hereinafter Products If you wish to use any such Product please be sure to refer to the specifications which can be obtained from ROHM upon request Examples of application circuits circuit constants and any other information contained herein illustrate the standard usage and operations of the Products The peripheral conditions must be taken into account when designing circuits for mass production Great care was taken in ensuring the accuracy of the information specified in this doc
25. 2 0011011 5 6 1011011 18 4 0011100 5 8mA 1011100 18 6mA 0011101 6 0 1011101 18 8 0011110 6 2 1011110 19 0 0011111 6 4 1011111 19 2 0100000 6 6 mA 1100000 19 4 0100001 6 8 mA 1100001 19 6 0100010 7 0 1100010 19 8 0100011 7 2 1100011 20 0 mA 0100100 7 4 mA 1100100 20 2 0100101 7 6 1100101 20 4 0100110 7 8 1100110 20 6 0100111 8 0 1100111 20 8 0101000 8 2 mA 1101000 21 0mA 0101001 8 4 mA 1101001 21 2 0101010 8 6 1101010 21 4 0101011 8 8 1101011 21 6 mA 0101100 9 0 mA 1101100 21 8 0101101 9 2 1101101 22 0 0101110 9 4 1101110 22 2 0101111 9 6 1101111 22 4 0110000 9 8 mA 1110000 22 6 0110001 10 0 mA 1110001 22 8 0110010 10 2 mA 1110010 23 0 mA 0110011 10 4 1110011 23 2 0110100 10 6 mA 1110100 23 4 0110101 10 8 mA 1110101 23 6 0110110 11 0 mA 1110110 23 8 mA 0110111 11 2 1110111 24 0 0111000 11 4 1111000 24 2 mA 0111001 11 6 mA 1
26. 3 00 3 090 V lo 50mA 3 007 3 10 3 193 V lo 50mA 3 104 3 20 3 296 V lo 50mA 3 201 3 30 3 399 V lo 50mA Output Current 101 150 mA Vo 1 8V Dropout Voltage Vsat1 0 2 0 3 V VBAT 2 5V lo 150mA Vo 2 8V Load Stability AVo11 10 60 mV lo 1 150mA Vo 1 8V Input Voltage Stability AVo12 10 60 mV VBAT 3 4 4 5V lo 50mA Vo 1 8V Ripple Rejection Ratio RR1 65 ue r Short Circuit Current Limit llim1 200 400 mA Vo 0V Discharge Resister at OFF ROFF1 1 0 1 5 kQ Regulator LDO2 1 164 1 20 1 236 V 10 50 1 261 1 30 1 339 V 10 50 1 455 1 50 1 545 V 10 50 1 552 1 60 1 648 V 10 50 1 746 1 80 1 854 V 10 50 2 134 2 20 2 266 V 10 50 2 328 2 40 2 472 lo 50mA 2 425 2 50 2 575 V lo 50mA Initial Voltage Spa i we 2522 260 2678 V lo 50mA 2 619 2 70 2 781 V 10 50 2 716 2 80 2 884 V lo 50mA 2 813 2 90 2 987 V lo 50mA 2 910 3 00 3 090 V lo 50mA 3 007 3 10 3 193 V lo 50mA 3 104 3 20 3 296 V lo 50mA 3 201 3 30 3 399 V lo 50mA Output Current 102 150 mA Vo 2 5V Dropout Voltage Vsat2 0 2 0 3 V VBAT 2 5V lo 150mA Vo 2 8V Load Stability Avo21 10 60 mV lo 1 150mA Vo 2 5V Input Voltage Stability Avo22 10 60 mV VBAT 3 4 4 5V 50 Vo 2 5V Ripple Rejection Ratio RR2 65 dB joa muc i Mee Short Circuit Current Limit llim2 200 400 mA Vo 0V Discharge Resister at OFF ROFF2 1 0 1 5 kQ 3 45 2010 07 2010 ROHM Co Ltd Al
27. 3 3 V ww rohm oom 1 45 2010 07 2010 ROHM Co Ltd rights reserved BD6083GUL Technical Note Electrical Characteristics Unless otherwise specified Ta 25 C VBAT 3 6V VIO 1 8V Limits x Parameter Symbol Unit Conditions Min Typ Max Circuit Current VBAT Circuit Current 1 IBAT1 0 1 3 0 RESETB 0V VIO OV VBAT Circuit Current 2 IBAT2 0 5 3 0 RESETB 0V VIO 1 8V DC DC x1 mode lo 60mA VBAT Circuit Current 3 IBAT3 61 65 mA VBAT 4 0V ee DC DC x1 5 mode lo 60mA VBAT Circuit Current 4 IBAT4 92 102 mA VBAT 3 6V TE DC DC x2 mode lo 60mA VBAT Circuit Current 5 5 123 140 MA 2 7 ALC Operating VBAT Circuit Current 6 IBAT6 0 25 1 0 mA ALCEN 1 AD cycle 0 5s setting Except sensor current VBAT Circuit Current 7 IBAT7 90 150 LDO1 2 ON VBAT Circuit Current 8 IBAT8 90 150 LDO3 4 ON LED Driver LED Current Step Setup ILEDSTP1 128 Step 6 LED Current Step At slope ILEDSTP2 256 Step 6 LED Maximum Setup Current IMAXWLED 25 6 mA LED1 6 LED Current Accuracy IWLED 15 7 mA 1 15 setting VLED 1 0V Between LED1 6 at VLED 1 0V LED Current Matching ILEDMT 4 ILED 15mA LED OFF Leak Current ILKLED 1 0 VLED 4 5V DC DC Charge Pump Output Voltage VoCP Vf
28. BIAS Output N Twait 64ms typ When SBIASON 1 ADC Movement 16 4ms typ 801 802 I 1 GC1 GC2 00 4 3 0 3 0 VOUT LED current Fig 30 When It cannot wait for the first illumination measurement backlight lighting is possible with ALCEN But the extremely short case of slope rise time a shoulder may be done like 1 for an LED electric current To the first illumination measurement for AMB 3 0 00h 2 Backlight Fade in Fade out Apply supply voltage Cancel reset Backlight setting Backlight Various settings Slow time setting The backlight turns on MLEDEN 1 Rise at designated slope time Set the minimum current Rise at designated slope time 0 The backlight turns off Fig 31 www rohm com 41 45 2010 07 Rev A 2010 ROHM Co Ltd All rights reserved BD6083GUL Technical Note 3 Backlight without Auto Luminous Mode Apply supply voltage Cancel reset The backlight settings can be made at any timing so long as it precedes MLEDEN 1 MLEDMD 0 is mandatory Backlight Various settings Y MLEDEN 1 The backlight turns on 0 must be set first when the backlight is off Fig 32 MLEDEN VOUT LED current pee gt Tsorr The rise time depends on TLH 3 0 s
29. LDO4O LDO3O 0 C LEDGND LED4 B LED2 LED3 WPWMIN RESETB C2N VBATCP 0 Total 35 Ball Fig 5 Pin Arrangement www rohm com 9 45 2010 07 Rev A 2010 ROHM Co Ltd All rights reserved BD6083GUL Technical Note Package Outline VCSP50L3 CSP small package SIZE 3 15mm 3 15mm A difference in public X Y Both 0 05mm Height 0 55 A ball pitch 0 5 1 MARK Lot No 3 153 0 05 3 15 0 05 e e H 0 06 TS 35 6 0 25 0 05 0 05 0 325 0 05 0 15 INDEX POST gt 0 325 0 05 2345 6 0 5 5 Fig 6 Package Outline Unit mm 2010 07 10 45 ROHM Co Ltd All rights reserved 2010 BD6083GUL Technical Note Pin Functions No BallNo Pin Name Functions Equivalent For Power For Ground Circuit 1 B6 VBATCP GND Battery is connected A 2 F4 VBAT1 GND Battery is connected A 3 F5 VBAT2 GND Battery is connected A 4 A1 T1 0 GND Test Output Pin Open N 5 A6 T2 GND Test Input Pin short to Ground s 6 F6 T3 0 GND Test Output Pin Open M 7 F1 T4 GND Test Input Pin short to Ground s 8 D5 VIO VBAT GND Power supply is connected C 9 B4 RESETB
30. W IU1 6 101 5 101 4 101 3 191 2 IU1 1 101 0 LED Current max ALC OFh 10h 11h 12h 13h W LDO4EN LDO3EN LDO2EN LDO1EN LDO Power Control 14h W LDO2VSEL3 LDO2VSEL2 LDO2VSEL 1 LDO2VSELO LDO1VSEL3 LDO1VSEL2 LDO1VSEL 1 LDO1VSELO pud 15h W ILDO4VSEL3 LDO4VSEL2 LDO4VSEL1 LDO4VSELO LDO3VSEL3 LDO3VSEL2 LDO3VSEL1 LDO3VSEL0 gn ur Input O for A free address has the possibility to assign it to the register for the test Access to the register for the test and the undefined register is prohibited www rohm com 2010 ROHM Co Ltd All rights reserved 16 45 2010 07 Rev A BD6083GUL Technical Note Register Map Address 00h lt Software Reset gt Address R W Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 BitO 00h w 5 z 5 SFTRST Initial Value 00h 0 Bit 7 1 Not used BitO SFTRST Software Reset 0 Reset cancel 2422 Reset All register initializing Refer to Reset for detail Address 01 LED Pin function setting Address Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 BitO 01h W W6MD W5MD W4MD MLEDMD Initial Value 02h 0 0 1 0 Bit 7 4 Not used Bit3 W6MD LED6 control setting individual Main group 0 LED6 individual control Initi
31. Wee des VoS x 12 256 VoS x 9 256 VoS x 13 256 VoS x 10 256 6h VoS x 1 256 VoS x21 256 VoS x 13 256 VoS x2 256 VoS x22 256 VoS 14 256 VoS x 3 256 VoS x 37 256 VoS 256 p VoS x4 256 VoS x 38 256 VoS x 20 256 VoS x 6 256 VoS x 65 256 VoS x 27 256 VoS x 7 256 VoS x 66 256 VoS x 28 256 VoSx 11 256 6 VoS x 38 6 m VoSx12 256 114 256 VoS x 39 256 VoSx20 256 VoSx 199 256 VoS x 53 256 EE VoSx21 256 VoSx200 256 VoS x 54 256 VoSx36 256 VoS x255 256 VoS x 74 256 m VoS x 37 256 VoS x75 256 VoS x 64 256 VoS x 104 256 5s VoS x 65 256 VoS x 105 256 VoS x 114 256 VoS x 144 256 ES VoS x 115 256 VoS x 145 256 VoS 199 256 VoS x 199 256 FR VoS x 200 256 VoS x 200 256 VoS x 255 256 VoS x 255 256 the Auto Gain control mode sensor gain changes in gray colored ambient level This means that this zone is not outputted in this mode www rohm com 2010 ROHM Co Ltd All rights reserved 36 45 2010 07 Rev A BD6083GUL Technical Note 7 Convert LED Current LED current can be assigned as each of 16 steps of the ambient level Convert LED Current by Min Current setting Max Current setting step setting and curbu setting Register 0 101 CRV STEP 2 0 Conversion Table Initial Value Step Table Setting i Coefficient i Coefficie
32. al Value 1 LED6 Main group control Refer to LED Driver for detail Bit2 W5MD LED5 control setting individual Main group 0 LED5 individual control Initial Value LED5 group control Refer to LED Driver for detail Bit1 W4MD LED4 Control Board setting unuse use 0 LED4 unuse 17 LED4 use Main group Control Initial Value Refer to LED Driver for detail BitO MLEDMD Main group setting Normal ALC 0 Main group Normal Mode ALCNon reflection Initial Value Main group ALC Mode Refer to 1 Auto Luminous Control ON OFF of ALC for detail Set up a fixation in every design because it isn t presumed W PW that it is changed dynamically And do the setup of W PW when each LED is WWw ronm com 17 45 2010 07 2010 ROHM Co Ltd All rights reserved BD6083GUL Address 02h lt LED Power Control gt Technical Note Address RW Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 BitO 02h W WPWMEN ALCEN WG6EN W5EN MLEDEN Initial Value 00h 0 0 0 0 0 0 0 0 Bit WPWMEN External PWM Input WPWMIN terminal Enable Control Valid Invalid 0 External PWM input invalid Initial Value 1 External PWM input valid Refer to 10 Current Adjustment of ALC for detail Bit6 ALCEN ALC function Control ON OFF 0 ALC block OFF Initial Value 1 ALC block Ambient Me
33. asurement Refer to 1 Auto Luminous Control ON OFF of ALC for detail Bit 5 4 Not used Bit3 W6EN LED6 Control ON OFF 0 LED6 OFF Initial Value LED6 ON individual control Refer to LED Driver for detail Bit2 W5EN LED5 Control ON OFF 0 LED5 OFF Initial Value i LED5 ON individual control Refer to LED Driver for detail Not used BitO MLEDEN Main group LED Control ON OFF 0 Main group OFF Initial Value ME Main group ON www rohm com 2010 ROHM Co Ltd All rights reserved Refer to 1 Auto Luminous Control ON OFF of ALC for detail 18 45 2010 07 Rev A BD6083GUL Technical Note Address 03h lt Main group LED Current setting Normal Mode gt Address RW Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 BitO 03h W IMLED 6 IMLED 5 IMLED 4 IMLED 3 IMLED 2 IMLED 1 IMLED 0 Initial Value 00h 0 0 0 0 0 0 0 Bit7 Not used Bit 6 0 IMLED 6 0 Main Group LED Current Setting at non AL C mode 0000000 0 2 mA Initial value 1000000 13 0 0000001 0 4 mA 1000001 13 2 0000010 0 6 1000010 13 4 0000011 0 8 mA 1000011 13 6 mA 0000100 1 0 mA 1000100 13 8 0000101 1 2 mA 1000101 14 0 0000110 1 4 1000110 14 2 0000111 1 6 mA 1000111 14 4 mA
34. because it has the possibility that an operation becomes unstable 11 About the pin for the test the un use pin Prevent a problem from being in the pin for the test and the un use pin under the state of actual use Please refer to a function manual and an application notebook And as for the pin that doesn t specially have an explanation ask our company person in charge 12 About the rush current For ICs with more than one power supply it is possible that rush current may flow instantaneously due to the internal powering sequence and delays Therefore give special consideration to power coupling capacitance power wiring width of ground wiring and routing of wiring 13 About the function description or application note or more The function description and the application notebook are the design materials to design a set So the contents of the materials aren t always guaranteed Please design application by having fully examination and evaluation include the external elements WWw ronm com 44 45 2010 07 2010 ROHM Co Ltd All rights reserved BD6083GUL Technical Note Ordering Part Number 7 Part Part Package Packaging and forming specification GUL VCSP50L3 E2 Embossed tape and reel VCSP50L3 BD6083GUL lt Tape and Reel information gt 1PIN MARK Tape Embossed carrier tape heat sealing method Quantity 2500pcs Direction EE MM of feed The direction is the
35. d after it If an address turns into the last address the next byte will read out After the transmission end the increment of the address is carried out register address slave address R W write register address register address increment increment Acacknowledge SDA LOW from master to slave A not acknowledge SDA HIGH S START condition P STOP condition Hort Slave Sr repeated START condition Fig 13 As for reading protocol and multiple reading protocols please do A not acknowledge after doing the final reading operation It stops with read when ending by A acknowledge and SDA stops in the state of Low when the reading data of that time is 0 However this state returns usually when SCL is moved data is read and A not acknowledge is done www rohm com 2010 ROHM Co Ltd All rights reserved 14 45 RENA BD6083GUL Technical Note Timing Diagram SDA SCL eit susTA Fig 14 G Electrical Characteristics Unless otherwise specified Ta 25 C VBAT 3 6V VIO 1 8V Standard mode Fast mode Parameter Symbol Unit Min Typ Max Min Typ Max 12 BUS format SCL clock frequency fscL 0 100 0 400 kHz LOW period of the SCL clock tLOW 4 7 1 3 HS HIGH period of the SCL clock tHIGH 4 0 0 6 Hs ime repeated START es m os Set up ti
36. ds of reset software reset and hardware reset 1 Software reset All the registers are initialized by SFTRST 1 SFTRST is an automatically returned to 0 Auto Return 0 2 Hardware reset It shifts to hardware reset by changing RESETB L The condition of all the registers under hardware reset pin is returned to the Initial Value and it stops accepting all address It s possible to release from a state of hardware reset by changing RESETB L H RESETB has delay circuit It doesn t recognize as hardware reset L period under 51 3 Reset Sequence When hardware reset was done during software reset software reset is canceled when hardware reset is canceled Because the Initial Value of software reset is 0 Ge VIODET The decline of the VIO voltage is detected and faulty operation inside the IC is prevented by giving resetting to Levelsift block Image Block Diagram VIO VBAT ey T NT i 12 6V nside resel Reset VBAT VIODET f 1 VIO RESETB RESETB Digital pin Inside reset Fig 15 Fig 16 When the VIO voltage becomes more than typ1 0V Vth of NMOS in the IC VIODET is removed On the contrary when VIO is as follows 1 0V it takes reset The VBAT voltage being a prescribed movement range G Thermal Shut Down A thermal shutdown function is effective in the
37. e next transmission After the transmission end the increment of the address is carried out p p S XiXiXixixixix 0 AZAGASAMASAZIATIAO A 27060504030201 00 27060504030201 00 A slave address register address DATA DATA R W 0 write register address register address increment increment ii from master to slave A acknowledge SDA LOW A not acknowledge SDA HIGH S START condition from slave to master P STOP condition 1 Write Timing Fig 11 Reading protocol It reads from the next byte after writing a slave address and R W bit The register to read considers as the following address accessed at the end and the data of the address that carried out the increment is read after it If an address turns into the last address the next byte will read out OOh After the transmission end the increment of the address is carried out S x ix ix IX IX x iX 1 5 04003 020100 1 D7iD6iD5iD4iD3iD2iD1 DO A P slave address DATA DATA A R W 1 read register address register address increment increment A acknowledge SDA LOW A not acknowledge SDA HIGH S START condition from slave to master P STOP condition from master to slave Fig 12 Multiple reading protocols After specifying an internal address it reads by repeated START condition and changing the data transfer direction The data of the address that carried out the increment is rea
38. etting Fig 33 WWw ronm com 42 45 2010 07 Rev A 2010 ROHM Co Ltd All rights reserved BD6083GUL Technical Note Pattern of the Power Dissipation Measuring Board M 4 44694894896 1 mum Tasa E ERES gt LLLLLLLLCLLLLLLLLI 7 layer 8 layer solder Fig 34 Pattern of the Power Dissipation Measuring Board www rohm com f 43 45 2010 07 Rev A 2010 ROHM Co Ltd All rights reserved BD6083GUL Technical Note Notes for Use 1 Absolute Maximum Ratings An excess in the absolute maximum ratings such as supply voltage temperature range of operating conditions etc can break down devices thus making impossible to identify breaking mode such as a short circuit or an open circuit If any special mode exceeding the absolute maximum ratings is assumed consideration should be given to take physical safety measures including the use of fuses etc 2 Power supply and ground line Design PCB pattern to provide low impedance for the wiring between the power supply and the ground lines Pay attention to the interference by common impedance of layout pattern when there are plural power supplies and ground lines Especially when there are ground pattern for smallCgnal and ground pattern for large c
39. ges while SCL is H START conditions or STOP conditions will occur and it will be interpreted as a control signal SCL i i i 80 state of stability SDA Data are effective ilt can change Fig 8 START and STOP condition When SDA and SCL are H data is not transferred on the bus This condition indicates if SDA changes from H to L while SCL has been H it will become START S conditions and an access start if SDA changes from L to H while SCL has been H it will become STOP P conditions and an access end SDA SCL START condition STOP condition Fig 9 Acknowledge It transfers data 8 bits each after the occurrence of START condition A transmitter opens SDA after transfer 8bits data and a receiver returns the acknowledge signal by setting SDA to L DATA OUTPUT i f BY TRANSMITTER i not acknowledge DATA OUTPUT A T _ BY RECEIVER acknowledge START condition clock pulse for acknowledgement Fig 10 www rohm com 13 45 2010 07 Rev A 2010 ROHM Co Ltd All rights reserved BD6083GUL Technical Note Writing protocol A register address is transferred by the next 1 byte that transferred the slave address and the write in command The 3rd byte writes data in the internal register written in by the 2nd byte and after 4th byte or the increment of register address is carried out automatically However when a register address turns into the last address it is set to 00h by th
40. gh attention not to handle the input pins such as to apply to the input pins a voltage lower than the ground respectively so that any parasitic element will operate Furthermore do not apply a voltage to the input pins when no power supply voltage is applied to the IC In addition even if the power supply voltage is applied apply to the input pins a voltage lower than the power supply voltage or within the guaranteed value of electrical characteristics 7 External capacitor In order to use a ceramic capacitor as the external capacitor determine the constant with consideration given to a degradation in the nominal capacitance due to DC bias and changes in the capacitance due to temperature etc 8 Thermal shutdown circuit TSD This IC builds in a thermal shutdown TSD circuit When junction temperatures become detection temperature or higher the thermal shutdown circuit operates and turns a switch OFF The thermal shutdown circuit which is aimed at isolating the IC from thermal runaway as much as possible is not aimed at the protection or guarantee of the IC Therefore do not continuously use the IC with this circuit operating or use the IC assuming its operation 9 Thermal design Perform thermal design in which there are adequate margins by taking into account the permissible dissipation Pd in actual states of use 10 LDO Use each output of LDO by the independence Don t use under the condition that each output is short circuited
41. h F 0 0 0 0 Bit 4 Not used Bit 3 0 AMB 3 0 Ambient Level 0000 0h Initial Value 0001 1h 0010 2h 0011 3h 0100 4h 0101 5h 0110 6h 0111 7h 1000 8h 1001 9h 1010 Ah 1011 Bh 1100 Ch 1101 Dh 1110 Eh 1111 Fh It begins to read Ambient data through and possible To the first AD measurement completion it is AMB 3 0 0000 Refer to 6 Ambient level detection of ALC for detail WWw ronm com 24 45 2010 07 2010 ROHM Co Ltd All rights reserved BD6083GUL Technical Note Address 0Dh Ambient LED Current setting gt Address RAW Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 BitO 0Dh w 100 6 100 5 190 4 100 3 100 2 100 1 100 0 Initial Value 13 0 0 1 0 0 1 1 Bit7 Not used Bit 6 0 100 6 0 Main Current at Ambient Level for Oh 0000000 0 2 1000000 13 0 0000001 04 mA 1000001 13 2 0000010 0 6 1000010 13 4 0000011 0 8 1000011 13 6 0000100 1 0 1000100 13 8 0000101 1 2 1000101 14 0 0000110 14 1000110 14 2 0000111 1 6 mA 1000111 14 4 0001000 1 8 mA 1001000 14 6 0001001 2 0 mA 1001001
42. inR 1 Voltage 0 1xVIO 0 9xVIO WPWMIN NMOS Input Pin L Level Input Voltage VILA 0 3 0 3 V H Level Input Voltage VIHA 1 4 VBAT 0 3 V Input Current linA 3 6 10 pA Input Voltage 1 8V ee PWmin 250 us WPWMIN Pin GC1 GC2 Sensor Gain Control CMOS Output Pin L Level Output Voltage VOLS 0 2 V IOL 1mA H Level Output Voltage VOHS VoS 0 2 V 1 1 6 Power Dissipation On the ROHM s standard board Power Dissipation Pd W Ta c Information of the ROHM s standard board Material glass epoxy Size 50mm x 58mm x 1 75mm 8 layer Wiring pattern figure Refer to after page Fig 1 Power Dissipation WWw rohm com 5 45 2010 07 2010 ROHM Co Ltd All rights reserved BD6083GUL Block Diagram Application Circuit Example 1 6LED ALC PWM 2 2uF 10V 1uF 10V 1yF 10V Charge Pump x1 x1 5 x2 Charge Pump Mode Control OVP LED terminal voltage feedback LL 23 o LDO1 Vo Selectable lo 150mA LDO2 Vo Selectable lo 150mA LDO3 Vo Selectable lo 150mA LDO4 Vo Selectable lo 150mA VIO Voltage t vio A 2 i SCL From CPU 9 4 Level C interface TSD SDA e gt Shift Digital Control From LCM 1 WEWMIN B3 i m ALS a 1 VREF 5 6 SBIAS 5 OOO
43. itial Value 1101 393 2 1110 458 8 ms 1111 524 3 ms Setting time is counted based on the switching frequency of Charge Pump The above value becomes the value of the Typ 1 2 time Refer to 8 Slope Process of ALC for detail Bit 3 0 3 0 Main LED current Up transition per 0 2mA step 0000 0 256 ms 0001 0 512 ms 0010 1 024 ms 0011 2 048 ms 0100 4 096 ms 0101 8 192 ms 0110 16 38 ms 0111 32 77 ms Initial Value 1000 65 54 ms 1001 131 1 ms 1010 196 6 ms 1011 262 1 ms 1100 327 7 1101 393 2 ms 1110 458 8 ms 1111 524 3 ms Setting time is counted based on the switching frequency of Charge Pump The above value becomes the value of the Typ 1 2 time Refer to 8 Slope Process of ALC for detail WWw ronm com 22 45 2010 07 Rev A 2010 ROHM Co Ltd All rights reserved BD6083GUL Address 0Ah lt ALC mode setting gt Technical Note Address RW Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 BitO 0Ah Ww ADCYC GAIN MDCIR SBIASON Initial Value 0111 0 0 0 1 Bit7 Not used Bit6 ADCYC ADC Measurement Cycle 0 0 52 s Initial Value 1 1 05 Refer to 4 A D conversion of ALC for detail Bit5 Not used Bit4 GAIN Sensor Gain S
44. l rights reserved BD6083GUL Technical Note Electrical Characteristics Unless otherwise specified Ta 25 C VBAT 3 6V VIO 1 8V Limits Parameter Symbol Unit Condition Min Typ Max Regulator LDO3 1 164 1 20 1 236 V lo 50mA 1 261 1 30 1 339 V lo 50mA 1 455 1 50 1 545 V lo 50mA 1 552 1 60 1 648 V lo 50mA 1 746 1 80 1 854 V lo 50mA Initial Voltage 2 134 2 20 2 266 V lo 50mA 2 328 2 40 2 472 V lo 50mA 2 425 2 50 2 575 V lo 50mA 2522 260 2678 V lo 50mA 2 619 2 70 2 781 V lo 50mA 2 716 2 80 2 884 V lo 50mA 2 813 2 90 2 987 V lo 50mA 2 910 3 00 3 090 V lo 50mA 3 007 3 10 3 193 V lo 50mA 3 104 3 20 3 296 V lo 50mA 3 201 3 30 3 399 V lo 50mA Output Current 103 150 mA Vo 1 8V Dropout Voltage Vsat3 0 2 0 3 V VBAT 2 5V lo 150mA Vo 2 8V Load Stability AVo31 10 60 mV lo 1 150mA Vo 1 8V Input Voltage Stability AVo32 10 60 mV VBAT 3 4 4 5V lo 50mA Vo 1 8V Ripple Rejection Ratio RR3 65 r Short Circuit Current Limit llim3 200 400 mA Vo 0V Discharge Resister at OFF ROFF3 1 0 1 5 kQ Regulator LDO4 1 164 1 20 1 236 V lo 50mA 1 261 1 30 1 339 V lo 50mA 1 455 1 50 1 545 V lo 50mA 1 552 1 60 1 648 V lo 50mA 1 746 1 80 1 854 V lo 50mA 2 134 2 20 2 266 lo 50
45. mA 2 328 2 40 2 472 V lo 50mA 2 425 2 50 2 575 V lo 50mA 2522 260 2678 V lo 50mA 2 619 2 70 2 781 V lo 50mA 2 716 2 80 2 884 V lo 50mA Initial Voltage 2 813 2 90 2 987 V lo 50mA 2 910 3 00 3 090 V lo 50mA 3 007 3 10 3 193 V lo 50mA 3 104 3 20 3 296 lo 50mA 3 201 3 30 3 399 V lo 50mA Output Current 104 150 mA Vo 2 8V Dropout Voltage Vsat4 0 2 0 3 V VBAT 2 5V lo 150mA Vo 2 8V Load Stability AVo41 10 60 mV lo 1 150mA Vo 2 8V Input Voltage Stability AVo42 10 60 mV VBAT 3 4 4 5V lo 50mA Vo 2 8V Ripple Rejection Ratio RR4 65 dB Short Circuit Current Limit llim4 200 400 mA Vo 0V Discharge Resister at OFF ROFF4 1 0 1 5 kQ 4 45 2010 07 2010 ROHM Co Ltd All rights reserved BD6083GUL Technical Note Electrical Characteristics Unless otherwise specified Ta 25 C VBAT 3 6V VIO 1 8V Parameter Symbol En Unit Condition Min Typ Max SDA SCL Interface L Level Input Voltage VILI 0 3 0 25 xVIO V H Level Input Voltage 0 75 xVIO VBAT 0 3 V A a Input E 7 7 v L Level Output Voltage VOLI 0 0 3 V SDA Pin IOL 3 mA Input Current linl 1 pA Input Voltage 0 1xVIO 0 9xVIO RESETB CMOS Input Pin L Level Input Voltage VILR 0 3 0 25 xVIO V H Level Input Voltage VIHR 0 75 xVIO 0 3 V Input Current l
46. make it effective WWw rohm com 11 45 2010 07 2010 ROHM Co Ltd All rights reserved BD6083GUL Technical Note Equivalent Circuit A B VBAT C VBAT E 24 4 TT vBAT G H vBAT VIO vBAT VIO 1 b H 4 CH a b J 77 77 77 J vBAT VI L vBAT VBAT veat VBAT N VBAT gt e 3 h 4 77 TT 77 vBAT VBAT vBAT VBAT S vBAT VBAT U 4 L 6 4 4 77 77 V vBAT VBAT W vBAT VIO X vos VBAT Y vio VBAT b a E Ka n y 77 77 Fig 7 Equivalent Circuit WWw rohm com 2010 07 2010 ROHM Co Ltd All rights reserved BD6083GUL Technical Note BUS Format The writing reading operation is based on the slave standard Slave address AT A6 A5 A4 A3 A2 A1 R W 1 1 1 0 1 1 0 1 0 Bit Transfer SCL transfers 1 bit data during H SCL cannot change signal of SDA during H at the time of bit transfer If SDA chan
47. me for a repeated START condition tSU STA 4 7 0 6 HS Data hold time tHD DAT 0 3 45 0 0 9 Hs Data set up time tSU DAT 250 100 ns Set up time for STOP condition tSU STO 4 0 0 6 Hs m Ar os os Ha 15 45 2010 07 Rev A 2010 ROHM Co Ltd All rights reserved BD6083GUL Technical Note G Register List Register data Address W R Function D7 D6 D5 D4 D3 D2 D1 DO 00h W SFTRST Software Reset Oth W W6MD W5MD WAMD MLEDMD LED Pin function setting 02h W WPFWMEN ALCEN W6EN W5EN MLEDEN LED Power Control 03h W IMLED 6 IMLED 5 IMLED 4 IMLED 3 IMLED 2 IMLED 1 IMLED O Main group current setting 04h 05h W IW5 6 IW5 5 IW5 4 IW5 3 IW5 2 IW5 1 IW5 0 LED5 current setting 06h W IW6 6 IW6 5 IW6 4 IW6 3 IW6 2 IW6 1 IW6 0 LED6 current setting 07h 08h 09h W THL 3 THL 2 THL 1 THL 0 TLH 3 TLH 2 TLH 1 0 Main Current transition OAh W GAIN MDCIR SBIASON Measurement mode setting OBh W CRV STEP 2 STEP 1 STEP 0 ALC Slope curve setup OCh R AMB 3 AMB 2 AMB 1 AMB 0 Ambient level ODh W 100 6 100 5 100 4 100 3 IUO 2 IUO 1 IUO 0 LED Current at Ambient level Oh ALC OEh
48. n Him Technical Note LED Drivers for LCD BackLights Pb Multifunction Backlight LED Driver RoHS for Small LCD Panels Charge Pump Type BD6083GUL No 10040EAT16 SEMICONDUCTOR Description BD6083GUL is Intelligent LED Driver that is the most suitable for the cellular phone It has 3 6LED driver and output variable LDO4ch for LCD Backlight It has ALC function that is Low Power Consumption System realized It can be developed widely from the high End model to the Low End model As it has charge pump circuit for DCDC it is no need to use coils and it contributes to small space VCSP50L3 3 15mm x 3 15mm 0 5mm pitch It adopts the very thin CSP package that is the most suitable for the slim phone G Features 1 Total 3 6LEDs driver for LCD Backlight It has 4LEDs it can select or 3LED for exclusire use of Main and 2LEDs which can chose independent control or a main allotment by resister setting Main Group can be controlled by Auto Luminous Control ALC system Main Group can be controlled by external PWM signal ON Off and a setup of LED current are possible at the time of the independent control by the independence 2 Ambient Light sensor interface Incorporates various functions such as a sensor bias adjustment function an ADC with an average filter a gainoffset adjustment function and an LOG conversion function so that options can be increased for illumination intensity sensors
49. nt MN STEP 2 0 Al eve CRV 0 CRV 1 eve CRV 0 CRV 1 Oh 0 0 8h 6 5 8 000 1 0mA 1h 0 25 1 9h 8 9 001 1 1mA 2h 0 5 2 Ah 10 10 010 1 2 3h 1 3 Bh 12 11 011 1 4h 1 5 4 Ch 13 12 100 1 6mA 5h 2 5 5 Dh 14 13 101 1 7mA 6h 3 5 6 Eh 15 14 110 1 8mA 7h 5 7 Fh 16 15 111 1 9mA AI X Coefficient IUO 12101 4101 X Alx Coefficient Drop under 1mA The example of a setting IU0O 4mA 101 20mA CRV 0 CRV 1 30 T T T 30 T T T T SLP 1mA SLP ImA e SLP 14mA SLP 1 1mA i 25 HA si ea SoS eee 25 E 12525222 42222 SLP 13mA SLP 1 3mA SLP 1 6mA SLP 1 6mA 201 SLP LImA 1 z opf 9707777 SLP 1 8mA SLP 18mA t SLP 1 9mA c SLP 19mA Podpb de n b M AA 15 2 Teese 5 8 8 EEES A o A th d 10 216 ee cree eee 5 l l l l 1 0 0 i i Oh 3h 6h 9h Ch Fh 3h 6h 9h Ch Fh Ambient Level Ambient Level Fig 23 Fig 24 37 45 2010 07 Rev A 2010 ROHM Co Ltd All rights reserved BD6083GUL Technical Note 8 Slope process Slope process is given to LED current to dim naturally LED current changes the 256Step gradation in sloping Current Data which is set Up dark bright Down bright dark LED current transition speed LED Current are set
50. nt Level i 1 1 1 i 1 i 1 i 1 1 1 1 1 1 17 Effective also in ALC functional the case of not using it Fig 20 1 Auto Luminous Control ON OFF ALC block can be independent setting ON OFF It can use only to measure the Ambient level Register ALCEN Register MLEDEN Register MLEDMD Refer to under about the associate ALC mode and Main LED current MLEDEN MLEDMD Sensor I F LED control Mode Main LED current m OFF OFF 0 0 AMB 3 0 0h Non ALC mode eo 92 24 51 100 6 0 1 1 0 x OFF 0 1 ON N ALC mode IMLED 6 0 0 1 1 ALC mode 2 1 1 1 1 Atthis mode because Sensor is OFF AMB 3 0 0h So Main LED current is selected 100 6 0 52 Atthis mode Main LED current is calculated See 8 Convert LED Current It becomes current value corresponding to each brightness 33 45 2010 07 Rev A 2010 ROHM Co Ltd All rights reserved BD6083GUL Technical Note 2 I V conversion External resistance for the 1 conversion Rs are adjusted with adaptation of sensor characteristic s 9 t 5 SBIAS SBIAS 6 I 2 oe ca D lout Az AID SSENS Ambient Rs SGND 777 o x x 5 Rs Sense resistance A sensor output current is changed into the voltage value S SBIAS Bias power supply terminal for
51. sistance 8 5 x2 0 x1 5 x1 0 Mode transition gt The transition of the mode is done when the ratio of VOUT and VBAT is detected and it exceeds a fixed voltage ratio x1 5 x1 0 Mode transition VBAT VOUT 1 16 Design value 2 0 1 5 Mode transition VBAT VOUT 1 12 Design value WWw ronm com 31 45 2010 07 2010 ROHM Co Ltd All rights reserved BD6083GUL Technical Note LED Driver The LED driver of 6ch is constructed as the ground plan Equivalence control is possible with LED1 4 LED4 can choose use un use with a register W4MD LED5 LED6 is controllable individually As for LED5 LED6 grouping setting to the main control is possible and main control becomes effective for the main group in the allotment LED5 and LED6 are setups of grouping to the main control When LED5 and LED6 are used by the individual control a slope time setup register THL and TLH doesn t become effective 1 I 1 1 i 1 2 IMLEDEO MLEDEN a gt LED3 MLEDMD i WPWMIN E i LED4 1 1 W4MD 1 1 OHE ne IW5 6 0 0 I W5EN 4 Tourn IW6 6 0 0 i W6EN 4 Fig 19 LED Composition which can be set up is the following
52. ter access acceptable lt End Sequence gt LDO OFF Reset VIO OFF Enough fall down VBAT OFF About the pin management of the function that isn t used and test pins Setting it as follows is recommended with the test pin and the pin which isn t used Set up pin referring to the Equivalent circuit diagram so that there may not be a problem under the actual use T2 T4 Short to GND because pin for test input T1 T3 OPEN because pin for test output Short to GND Must Nomusga CED Rin But the setup of a register concerned with LED that isn t used is prohibited Short to ground A Pull Down resistance built in terminal is contained too 40 45 2010 07 Rev A 2010 ROHM Co Ltd All rights reserved BD6083GUL Technical Note Operation Settings Flow Example 1 Backlight Auto Luminous Mode Apply supply voltage Cancel reset Luminous control Various The backlight settings can be made at any timing settings so long as it precedes MLEDEN 1 Backlight Various settings MLEDMD 1 is mandatory ALCEN 1 ALC block operation takes place for Illumination Intensity measurement Wait for 80 4 ms or more Time required for initial Illumination Intensity acquisition v MLEDEN 1 The backlight turns on 0 must be set first when the backlight is off Fig 29 ALCEN 1 ADCYC ADC Cycle S
53. ual The Products are not designed or manufactured to be used with any equipment device or system which requires an extremely high level of reliability the failure or malfunction of which may result in a direct threat to human life or create a risk of human injury such as a medical instrument transportation equipment aerospace machinery nuclear reactor controller fuel controller or other safety device ROHM shall bear no responsibility in any way for use of any of the Products for the above special purposes If a Product is intended to be used for any such special purpose please contact a ROHM sales representative before purchasing If you intend to export or ship overseas any Product or technology specified herein that may be controlled under the Foreign Exchange and the Foreign Trade Law you will be required to obtain a license or permit under the Law Thank you for your accessing to ROHM product informations More detail product informations and catalogs are available please contact us ROHM ROHM Customer Support System SEMICONDUCTOR http www rohm com contact www rohm com 2010 ROHM Co Ltd All rights reserved R1010A
54. ument However should you incur any damage arising from any inaccuracy or misprint of such information ROHM shall bear no responsibility for such damage The technical information specified herein is intended only to show the typical functions of and examples of application circuits for the Products ROHM does not grant you explicitly or implicitly any license to use or exercise intellectual property or other rights held by ROHM and other parties ROHM shall bear no responsibility whatsoever for any dispute arising from the use of such technical information The Products specified in this document are intended to be used with general use electronic equipment or devices such as audio visual equipment office automation equipment commu nication devices electronic appliances and amusement devices The Products specified in this document are not designed to be radiation tolerant While ROHM always makes efforts to enhance the quality and reliability of its Products a Product may fail or malfunction for a variety of reasons Please be sure to implement in your equipment using the Products safety measures to guard against the possibility of physical injury fire or any other damage caused in the event of the failure of any Product such as derating redundancy fire control and fail safe designs ROHM shall bear no responsibility whatsoever for your use of any Product outside of the prescribed Scope or not in accordance with the instruction man
55. urrent included the external circuits please separate each ground pattern Furthermore for all power supply pins to ICs mount a capacitor between the power supply and the ground pin At the same time in order to use a capacitor thoroughly check to be sure the characteristics of the capacitor to be used present no problem including the occurrence of capacity dropout at a low temperature thus determining the constant 3 Ground voltage Make setting of the potential of the ground pin so that it will be maintained at the minimum in any operating state Furthermore check to be sure no pins are at a potential lower than the ground voltage including an actual electric transient 4 Short circuit between pins and erroneous mounting In order to mount ICs on a set PCB pay thorough attention to the direction and offset of the ICs Erroneous mounting can break down the ICs Furthermore if a short circuit occurs due to foreign matters entering between pins or between the pin and the power supply or the ground pin the ICs can break down 5 Operation in strong electromagnetic field Be noted that using ICs in the strong electromagnetic field can malfunction them 6 Input pins In terms of the construction of IC parasitic elements are inevitably formed in relation to potential The operation of the parasitic element can cause interference with circuit operation thus resulting in a malfunction and then breakdown of the input pin Therefore pay thorou
56. ut VOUT is equipped with the over voltage protection and the over current protection function A VOUT over voltage detection voltage is about 5 6V typ VOUT at the time of rise in a voltage A detection voltage has a hysteresis and a detection release voltage is about 5 4V typ And when VOUT output short to ground input current of the battery terminal is limited by an over current protection function WWw ronm com 30 45 2010 07 2010 ROHM Co Ltd All rights reserved BD6083GUL Technical Note Mode transition The transition of boosts multiple transits automatically by VBAT Voltage and the VOUT Pin Voltage STANDBY ALL off MLEDEN 1 or W EN 1 9 and Ta Trsp CP x1 0 mode After detecting VOUT gt 1 5V typ 128us typ wait CP x1 0 mode mode down H mode up H CP x1 5 mode mode down H mode up H CP 2 0 mode 0 e Fig 18 The mode transition of the charge pump works as follows 1 0 1 5 2 0 Mode transition gt The transition of the mode is done when VOUT was compared with VBAT and the next condition was satisfied x1 0 x1 5 Mode transition VBAT lt VOUT Ron10xlout LED Pin feedback VOUT Vf 0 2 Typ x1 5 x2 0 Mode transition VBATx1 5 lt VOUT Ron15xlout LED Pin feedback VOUT Vf 0 2 Typ Ron10 x1 Charge pump on resistance 1 4 Ron15 x1 5 Charge pump on re
57. witching Function Control 0 Auto Change Initial Value 1 Fixed Refer to 3 Gain control of ALC for detail Bit 3 2 Not used Bit1 MDCIR LED Current Reset Select by Mode Change 0 LED current non reset when mode change Initial Value 1 LED current reset when mode change Refer to 9 LED current reset when mode change of ALC for detail BitO SBIASON 0 Measurement cycle synchronous 172 Usually ON at ALCEN 1 Initial Value Refer to 4 A D conversion of ALC for detail Address 0Bh lt ALC slope curve setting gt Address RAW Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 BitO OBh W CRV STEP 2 STEP 1 STEP 0 Initial Value 0011 0 0 0 1 Bit 7 4 Not used Bit3 CRV Brightness Current Conversion Curve Type 0 Log curve Initial Value linear Bit 2 0 STEP 2 0 Step At the time of Brightness Current Conversion 000 1 0mA 001 1 1 Initial Value 010 1 2 011 1 3mA 100 1 6 101 1 7mA 110 1 8 111 1 9mA Refer to 7 Convert LED Current of ALC for detail www rohm com 2010 07 Rev A 2010 ROHM Co Ltd All rights reserved 23 45 BD6083GUL Technical Note Address lt Ambient level Read Only gt Address R W Bit7 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 OCh R AMB 3 AMB 2 1 0 Initial Value 00

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