AnaChip AP1604 handbook
Contents
1. pl au f With Plating b1 gt AN auge Tane e d 0 25mm e L L1 mm m Nome Mee i om Max oss ooo 0022 CME eo fes a Anachip Corp www anachip com tw Rev 1 1 Jun 27 2005 6 7 AP1604 PWM PFM Dual Mode Step down DC DC Converter m Package Information Continued 2 SON 6L 3x3x0 8mm lt ES E1 L C 0 25 CH 2x A i gt 4 b Pin1 ID Area 0 10 C lt 2 TL SEATING PLANE 7 Y A1 C N YC id II E R EITIC TE A 070 075 080 0 028 0 030 0 031 At 0 00 002 005 0 000 1000 0002 _ AS O203REF O008REP b 030 040 045 0012 0016 0 018 AD 20 300 310 0 114 0118 0 122 le 09 BS 087 BSC ef 190BSC 00580 ly ooo 008 0000 0003 Anachip Corp www anachip com tw Rev 1 1 Jun 27 2005 TIT WWW ALLDATASHEET COM Copyright Each Manufacturing Company All Datasheets cannot be modified without permission This datasheet has been download from www AllDataSheet com 100 Free DataSheet Search Site Free Download No Register Fast Search System www AllDataSheet com2. Descriptions Output Voltage Input Supply GND Ground CE SS Chip Enable Soft Start Feedback pin Signal Power for SON only E EEE U EEE EEE This datasheet contains new product information Anachip Corp reserves the rights to modify the product specification without notice No liability is assumed as a result of the use of this product No rights under any patent accompany the sale of the product 1 7 Rev 1 1 Jun 27 2005 CAN Chi e AP1604 PWM PFM Dual Mode Step down DC DC Converter m Ordering Information AP1604 XXX A AP1604A W SOT23 5 A Taping SN SON 6 3 3 0 8mm E Block Diagrams Comparator l Ramp Wave Vref with PWM PFM Generator CE Controller OSC Ta 25 C Ves A3 Vert 03 Vert Continuous Total m save Internal limited Power Dissipation Operating Ambient Temperature Anachip Corp www anachip com tw Rev 1 1 Jun 27 2005 2 7 AP1604 PWM PFM Dual Mode Step down DC DC Converter m Electrical Characteristics Vin oV Vour 2V Load 300mA Ta 25 C Men ER Le y OO M Vin 2 2 5 5V Load 10mA oad Regulation lour 10 800mA Input Voltage Line Regulation L Lk Operating Current CE SS Vn No Load I Supply Current No external components gt PPY CE SS V n Veg 1 2V No external components Ise Stand by Current CE SS 0V Vre 0V CC lot Fosc MAXDTY Maximum Duty Ratio PFMDTY PFM Duty Ratio Veen CE SS High Voltage Apply 1 4
3. 540 B 1 os 520 0 500 2 5 3 3 5 4 4 5 5 5 5 2 5 3 3 5 4 4 5 5 5 5 Vcc V Vec V Vcc v s Current Limit Vcc v s Rosrox ON 1 4 600 1 3 500 1 2 1 1 400 lt Current Limit 2 E 300 30 9 E S 0 8 oP 200 9 100 0 6 0 5 L 0 3 3 5 4 4 5 5 5 5 2 5 3 3 5 4 5 5 5 Vec V Vec V Line Regulation Load Regulation 0 3 3 0 2 2 0 1 1 S 3 0 0 S 3 0 To gt gt lt 0 2 2 0 3 3 2 5 3 3 5 4 4 5 5 5 5 0 100 200 300 400 500 600 700 800 Vcc V Load mA Anachip Corp www anachip com tw Rev 1 1 Jun 27 2005 4 7 AP1604 PWM PFM Dual Mode Step down DC DC Converter m Typical Application Circuit 2 2V 5 5V 10uH Vin O e eeh ET 1MQ AP1604A A B240A R2 CE SS GND ao ode sour be 10nF R1 0 1uF 68uF l E 100nF EE o la al R2 Vout 1x 1 R1 R1 100K 200K m Marking Information 1 SOT23 5L Appendix Identification See Appendix AP1604A SOT23 5 Y Year 0 9 M Month A L SOT23 5L 2 SON 6L 3 3 0 8mm Identification Code Appendix gt See the table Part Number EE Date Code oan code Month A L ap 3 370 8mm Anachip Corp www anachip com tw Rev 1 1 Jun 27 2005 5 7 CAN Chi e AP1604 PWM PFM Dual Mode Step down DC DC Converter m Package Information 1 Package Type SOT23 5L lt _ _ D el gt 5 4 A 0 10 C 5x Seating Plane
4. AP1604 PWM PFM Dual Mode Step down DC DC Converter m Features Input voltage range 2 2V 5 5V Vour type Oscillator frequency 600KHz Typ Internal reference 1 0V Typ High efficiency 93 Typ Stand by capability Ilstg 2uA Typ Soft start time set up externally type possible Current limit and thermal shutdown protection Pb Free Package SOT23 5 SON 6 3x3x0 8mm m Applications e Electronic Information Organizers e Palmtops e Cellular and portable phones e Portable Audio Systems e Various Multi function Power Supplies m Pin Assignment Top View FB CE SS SON 6 m General Descriptions The AP1604 series are multi functional step down DC DC converters with built in speed low ON resistance drivers It is capable to deliver more than 800mA output current with external coil diode and capacitor Output voltage is set up by the external resistors 2 3 accuracy The 600KHz AP1604 that can work out with small value external components comes out more compact board The device switches to and works under PFM mode with light loads It keeps at high efficiency for both light loads and large output current AP1604 can be soft start with a proper capacitor connected between CE SS pin and ground The stand by current is less than 2uA when CE SS pin is at LOW status The device is forced to switch off as the voltage at that pin is lower than the stipulated voltage m Pin
5. V min to CE SS determine Vout High Vee CE SS Low Voltage Same as Vcen determine Vout Low EFFI Efficiency Voc 5V Vour 3 3V Load 300mA Kg V UVLO Voltage min Vcc voltage required to maintain H at UVLO loperating voltage Vour z peak current da Current Limit Vin 5V Vour 2V Fosc Oscillator Frequency Load 300mA Vin 5V Vour 2V Rdson Condition lourr300mA Vin 5V VouT 2V m Typical Performance Characteristics Vcc v s Operating Current N Co O o co M On 2 2 o elei N On N 01 O O N O o M O O Ge L N co N le OO 3 e O O 390 450 m Vcc v s Quiescent Current O o D gt O N O o o 80 Operating Current uA Quiescent Current uA 200 A a iii RB O O O O Anachip Corp www anachip com tw 3 7 Rev 1 1 Jun 27 2005 PWM PFM Dual Mode Step down DC DC Converter AP1604 m Typical Performance Characteristics Continued Vcc v s Stand by Current Vcc v s Frequency 6 700 5 5 680 a 660 S 4 IS 640 35 lt 620 3 gt 600 O 25 o 580 gt 2 5 Q S 560 i LL
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AnaChip AP1604 handbook