FUJITSU MB3829 Manual
Contents
1. s mv Load stabiiy toaa iocomatozioni so se Ripple removal ratio Vin 0 2Vrms so Output leakage current Vcc1 0 to 2 97V VBATT1 0V Vo4 3V te 10 pA ta foor Reso sser 90 1450 Output voltage Backup Output saturation voltage Veci 0V los 201A uA Vcc1 0 to 2 97V Output leakage current CC1 D i VBATT1 3V Short 2 1 10 circuited to VBATTI Input on condition vn 2 ve ON OFF ON Switch Input off condition ve o os v section input curant m wo veoav CTS output resistance Roy _ OFF H ON setup time Ton 1 5 RT1 1MQ Guaranteed by design 11 MB3829 Vcc1 2 3 3 6V Ta 25 C Parameter Symbol Condition Mi Detection Power Instantaneous detection time CT3 2 2uF RT3 1MQ 4 0 4 7 5 5 Restoration wi Section Input on condition Von CLR pin 2 0 Voc V Input current E 5 A gt SOI Stand bycurrent Taak OFF supply 04 100 control IBATT1 200uA section REG2 3 OFF lo1 11mA lo4 100uA IBATT1 200uA Power off current REG8 OFF lo1 11mA lo2 30uA 04 100 IBATT1 200uA Power oncurrent Power oncurrent 01 11mA lo9 40mA lo3 12MA lo4 100uA IBATT1 200uA Power oncurrent loi to 104 IBATTI No load Note The Icc1 to 5 values for the whole power supply control2. 1991 FUJITSU LIMITED F48013S 2C 22 008 0597 004 MOUNTING HEIGHT 1 50 0 20 0 10 8 00 NOM 1 002 005 001 0 05 0427352 Details of 0 t010 o 6 0 10x0 10 HEIGHT 004 004 STAND OFF 020 008 0 50 0 20 Dimensions in inches millimeters Rights Reserved Circuit diagrams utilizing Fujitsu products are included as a means of illustrating typical semiconductor applications Complete information sufficient for construc tion purposes is not necessarily given The information contained in this document has been carefully checked and is believed to be reliable However Fujitsu assumes no responsibility for inaccura cies The information contained in this document does not convey any license under the copyrights patent rights or trademarks claimed and owned by Fujitsu Fujitsu reserves the right to change products or specifications without notice No part of this publication may be copied or reproduced in any form or by any means or transferred to any third party without prior written consent of Fujitsu MB3829 23 MB3829 FUJITSU LIMITED For further information please contact Japan FUJITSU LIMITED Corparate Grobal Business Support Div Electronic Devices 4 1 1 Kamikodanaka Nakahara ku Kawasaki shi
3. M B3829 March 1998 Edition 1 0 DATA SHEET MB3829 co FUJITSU System Power Supply IC for Mobile Telephone DESCRIPTION This power supply IC incorporates a 4 channel series regulator and a battery backup function It is a multi function power supply IC with an output control function and momentary power loss detection circuit which are both required for mobile telephones It also incorporates a speaker amplifier and a buzzer driver Since it has a built in power system suitable for mobile telephones it promises equipment downsizing FEATURES Power consumption during standby 0 22 mW typ 4 channel low saturation voltage type 6 Q typ for channels 1 3 series regulator 20 Q typ for channel 4 Battery backup function Momentary power loss and power restoration functions ON OFF switch circuit with an operating error prevention function BTL amplifier for driving the speaker Output power 90 mW typ Buzzer driver to permit changing the sound volume 200 mA max Power supply voltage drops are accurately detected Hysteresis is provided for detection voltage Watchdog timer stop function is provided inhibit pin Watchdog monitoring time and reset time are set independently Copyright 1998 by FUJITSU LIMITED 48 PIN PLASTIC LQFP FPT 48P M05 This device contains circuitry to protect the inputs against damage due to high static voltages or electric fields However it is advised that
4. Kanagawa ken 211 8588 Japan Tel 044 754 3763 FAX 044 754 3329 North and South America FUJITSU MICROELECTRONICS INC Integrated Circuits Division 3545 North First Street San Jose CA 95134 1804 USA Tel 408 922 9000 FAX 408 922 9179 Europe FUJITSU MIKROELEKTRONIK GmbH Am Siebenstein 6 10 63303 Dreieich Buchschlag Germany Tel 06103 690 0 FAX 06103 690 122 Asia FUJITSU MICROELECTRONICS ASIA PTE LIMITED 05 08 151 Lorong Chuan New Tech Park Singapore 556741 Tel 65 281 0770 FAX 65 281 0220 FUJITSU LIMITED 1998 24
5. sections of this data sheet Exposure to absolute maximum rating conditions for extended periods may affect device reliability RECOMMENDED OPERATING CONDITIONS 1 Parameter Symbol Condition Mim Typ Mex MB3829 RECOMMENDED OPERATING CONDITIONS 2 a i did Power control time setup wwe e power 1055 7 section cd Sounder Control input voltage 5 lo monitoring 1 Clock monitoring time setup Crw 0 001 Note The recommended operating conditions are the recommended values guaranteeing normal LSI operations specified values for electrical characteristics are guaranteed when the conditions in the Condition column as well as the recommended operating conditions are met MB3829 ELECTRICAL CHARACTERISTICS 1 Power supply control section Vcc1 2 3 3 6V Ta 25 C Parameter Symbol Condition Mi section Constant Voltage Controller REG1 Constant Voltage Controller REG2 3 10 Temperature regulation of Ta o Output voltage Input current Vi 3 0V Guaranteed by design MB3829 Vcc1 2 3 3 6V Ta 25 C Parameter Symbol Condition Mi gt REG outputsaturationvotage Vesar 2 __ owpuvotags 6 me sotossse 1 2 Input stabilty une
6. times and is therefore suitable for data backup REGs 1 through 4 incorporate an overcurrent protection circuit to REG3 100 mA REG4 25 mA 3 Battery backup section When the main battery is installed the series regulator recharges a button type lithium secondary battery which is often used to provide backup for clocks and memory When the main battery is not installed the backup battery supplies power to clocks and the battery via a built in diode Since the recharging series regulator is set at 3 18 V this battery backup section is suitable for manganese and lithium batteries 4 ON OFF switch section When atime setup capacitance and resistance are connected to the CT1 pin the ON1 pin makes it possible to set the power supply button activation time This feature prevents turning ON a mobile telephone accidentally The ON2 and OFF pins provide a method of exercising direct ON OFF control of the regulator ON time setting calculation formula Ton Cr4 x x In 1 1 26V Vcca 5 Momentary power loss function and power restoration section When time setup capacitance and resistance are connected to the pin a momentary Vcc loss which may be caused by battery replacement etc will be detected so as to deliver output to the TOUT pin At power restoration the operating state before the momentary power loss is recovered After a momentary power loss the CLR pin resets the prevailing state so that t
7. ation vs ambient temperature curve 1000 800 600 400 Allowable dissipation Pp MW 200 Ambient temperature Ta C MB3829 VOLTAGE MONITORING SECTION TIMING CHART CK INH CTP 17 MB3829 DESCRIPTION OF OPERATION The numbers in the timing diagram correlate to the numbers 1 to 13 below 1 When the REG1 output voltage OUT1 is about 0 8 V Vcc_ the reset signal is output 2 When OUT1 reaches a level higher than the detection voltage the power on reset hold time setup ca pacitor begins to charge The value is 2 81 V 8 When the power on reset hold time setup pin Crp voltage rises above the threshold level Vth the reset clears RESET pin voltage changes from L level to H level The Vth value is about 1 9 V The power on reset hold time tpp is expressed by the following equation Also the watchdog timer monitoring time setup capacitor CTw begins to charge teg Ms A x uF A 700 4 When the watchdog timer monitoring time setup pin Cty voltage reaches the Hi level Vp the CTw changes from the charged state to the discharged state The Vy value is about the reference voltage of 1 24 V 5 When a clock pulse input is applied to the clock pin CK and then the next clock pulse input is applied positive edge trigger to the CK pin during a Cry discharge switching from the discharged state to the charged state occurs 6 I
8. d OUT1 falls below Veg the reset signal is output 18 MB3829 REG SECTION RISE TIMING REQUIREMENTS SPEAKER AMPLIFIER SECTION RISE TIMING REQUIREMENTS VCC4 VSB CHOICE L BP 4 7uF Speaker output 25mW Speaker output TR VCC4 VSB CHOICE BP 4 7uF OV MB3829 APPLICATION CIRCUIT E T 01 rip 19591 uo JeNod reus un i Zu M e oana E L7 e SOND SODA MII ENI ZNI INI HNI 13599 dlo Uolloes da 14 ris m eBeyoA SOON pi Mi as SNL Azz Jellouoooioluu sso amod Aseyuswoy 26 440 Ge 57001 N zno 6 lonuo9 ino Sr dnyoeg va uonoas Pest 1 2100 LINO COND FOND I yee AAW Ionuo5 20 MB3829 USAGE PRECAUTIONS 1 Device settings must not exceed the maximum ratings Usage under conditions exceeding absolute maximum ratings may permanently damage LSI devices Note also that in normal operation usage within recommended operating conditions is
9. f a clock pulse input is not delivered to the clock pin CK within the watchdog timer monitoring time tWD the CTW pin voltage falls below the Lo level Vi so the reset signal is output RESET pin voltage changes from level to the L level The V value is about 0 24 V The watchdog timer monitoring time tyyp is expressed by the following equation twp mS B x Crw uF B 1600 7 When the is recharged to raise the pin voltage above Vth the reset clears allowing the watchdog timer to start running The watchdog timer monitoring reset time twp is expressed by the following equation twn mS D x uF B 50 8 When the OUT1 drops below the fall period detection voltage Vg pin voltage falls so that the reset signal is output RESET pin voltage changes from H level to the L level The Vs value is about 2 75 V 9 When the OUT1 rises above charging starts 10 When the pin voltage rises above Vth the reset clears causing the watchdog timer to start running 11 When the inhibit signal is input Hi level the watchdog timer operation is forcibly stopped In this case only the watchdog timer stops and the OUT1 monitoring operations 8 to 10 are performed the inhibit input does not clear the watchdog timer does not operate 12 When the inhibit input clears becomes Lo level the watchdog timer begins to operate 13 When the REG1 output turns OFF an
10. he momentary power loss detection circuit retains the latch circuit state Momentary power loss detection time calculation formula Torr x x In 1 2 3V 0 27V 2 3V MB3829 6 ON OFF setup conditions for individual channels ON OFF switching CTL2 CTL3 in OFF standby mode L H 2 Speaker amplifier section A BTL output type amplifier is used to drive the speaker directly The typical output power is as high as 90 mW at 32 and the SB pin provides ON OFF control The CHOICE pin controls earphone selection 3 Sounder section This section incorporates three low saturation output transistors for driving the buzzer IN1 IN2 and IN3 are used to select the output transistor 4 Voltage monitoring section This section incorporates the REG1 output voltage detection function and watchdog timer function It outputs a reset signal to the RESET pin Further the detection time varies with the capacitance connected to the CTP and CTW pins MB3829 ABSOLUTE MAXIMUM RATINGS IO sections tput t lo to Output current 1 Speaker amplifier 50 section Voltage monitoring Reset output current lor DC 10 to 10 mA section Value as mounted on double sided epoxy board 10 x 10 cm NOTE Permanent device damage may occur if the above Absolute Maximum Ratings are exceeded Functional operation should be restricted to the conditions as detailed in the operational
11. normal precautions be taken to avoid application of any voltage higher than maximum rated voltages to this high impedance circuit MB3829 PIN ASSIGNMENT 5 2 o o O E gt r 4 N Speaker Amp section TOP VIEW FPT 48P M05 MB3829 PIN DESCRIPTION Power supply OUTI REG1 output 3 0 V control section VREF slow start capacitance connection pin VCC1 aru Power supply pin for power supply control section 7 CTL2 REG2 control pin In REG1 operating H level REG2 operation L level REG2 OFF OUT3 RG REG8 output pin 3 0 V CTL3 REGS control pin In REG1 operating level REG8 operation L level REG3 OFF BATT1 e Backup battery connection pin 13 CLR Reset pin for momentary power loss detection and power restoration section 14 Pin for connecting momentary power loss evaluation time setup capacitor 15 CT3 Pin for connecting momentary power loss evaluation time setup capacitor and resistor TOUT Pin for momentary power loss detection and output open drain VREF EI Pin for reference voltage output Power supply pin for momentary power loss detection and 18 VCC3 A power restoration section VCC5 Ee Power supply pin for sounder section Sounder section 5 m 1 Control input 3 level operation Co
12. ntinue MB3829 Continued i qme esso ca dla iis 7 sec og _ les ben eee dee eso alle EN pe se a eee 000 0 0 110 9 ie SZ l 1 Control input pin level speaker amplifier operation 1 2 Cons di 2 Voltage monitoring m Jn s HRS CI MER uj BW XM LLL NM ee ar ecc MB3829 BLOCK DIAGRAM ENI ZNI LNI uonoes Jamod pue sso amod MLO HNI 19599 dlo 39IOHO ALNOVLNO MB3829 Function Descriptions 1 Power supply control section 1 Reference voltage circuit The reference voltage circuit generates a temperature compensated stable voltage 1 26 V The generated reference voltage is used as the power supply control section reference voltage or bias 2 Series regulator section A 4 channel series regulator incorporating a low saturation output transistor is used All four channels provide an output voltage of 3 0 V Their characteristics are described below REGI is suitable for a microcontroller power supply because it is connected to a power on reset circuit It is controlled by the ON OFF switch section ON OFF control of REG2 and REG8 is exercised independently by the CTL2 and CTL3 pins while REG1 is ON REG4 operates at all
13. preferred and that the reliability of LSI devices may be adversely affected when used outside these conditions 2 Devices should be used within recommended operating conditions Recommended operating conditions are recommended values within which the LSI device is warranted to operate normally Rated values of electrical characteristics are warranted within the range of recommended operating conditions and within the conditions listed in the condition column for each parameter 3 The PC board ground line must be designed by taking the common impedance 4 Guard against static electricity The semiconductor containers must be protected against static electricity or made of conductive materials When storing or transporting a component mounted PC board place it in a conductive bag or container Ensure that the workbenches tools and measuring instruments are grounded Workers must be grounded via a series resistance of 250 kQ to 1 MQ ORDERING INFORMATION MB3829PFV G BND Plastic LQFP 48 pin 48 05 21 MB3829 PACKAGE DIMENSIONS LEAD No 0197 0031 48 LEAD PLASTIC FLAT PACKAGE 2 354 008 SQ_ gt 9 00 0 20 le 276 004 SQ 7 00 0 10 0 50 0 08 0 18 CASE No FPT 48P M05 0 08 0 03 7 004 0 10
14. section represent the sum of Vcc1 to Vcc3 pin current values except the load current 12 MB3829 2 Speaker amplifier section sola Voltage gain Non INV input Lea Speaker section Distortion rate of all high frequencies Po 25 mW ENER Voltage gain Earphone Output voltage Input impedance Input ON condition V Power supply current at standby fia _ a Power supply current at no load Speaker mode gt When no signal 3 5 mA Power supply current at no load Earphone mode lcca When no signal Speaker ON condition Earphone ON condition VEON a Guaranteed by design Vcc1 2 3 3 6V Ta 25 C 13 MB3829 3 Sounder RAT Dx ers pe p pe log 50 mA pese a et ICI O E 3 6V Ta 25 C 10 a 7 Power supply current at load Vini 3 0 V CLK Duty 50 E 14 MB3829 4 Voltage monitoring section sia OUT1 3 0V Ta 25 C CK input threshold voltage Input current Reset output voltage E 1n ri mm ma Crores e eet ATI enim ine novi m fonon orane 7 m Ta N E cesena a ECC pe meal 1 The voltage range prevailing during RESET output rise fall time measurement is from 10 to 90 Guaranteed by design 8 cle 15 MB3829 TYPICAL CHARACTERISTICS CURVE Allowable dissip
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