Complete system-on-chip targets mobile terminals other power battery p

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Complete system-on-chip targets mobile terminals other power battery p

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Power Management Chip Includes Battery Charger Control
Complete system-on-chip targets mobile terminals other power battery products
adjustable regulators (metal mask) Audio voltage regulator 1.8V/2.5V/3.0V 100mA Baseband voltage regulator 1.5V/1.8V/2.5V 150mA programmable regulators (I2C) voltage regulator 2.5V/2.7V/2.8V/3.0V 100mA Vibrator voltage regulator 1.8/3.0V 100mA general purpose regulators: ELBUZ voltage regulator 150mA Real Time Clock voltage regulator 3.3V 50mA DC/DC programmable step down converter 2.3V/2.9V (metal mask) Indicator switch Buzzer driver 120mA peak Current sinker backlight Li-ion type battery charger card supply level shifter (1.8V/3.0V) serial interface Power control single 6x6mm TFBGA STw4101 chip includes battery power management, charger control, stepdown converter linear voltage regulation digital cellular phone handsets similar applications. STMicroelectronics STw4101 power management chip integrates functions required managing battery power charger control digital cellular handsets other battery powered mobile applications where power performance requirements similar. Housed 6x6mm TFBGA package, STw4101 includes dropout analog regulators supply circuits, baseband chip, audio chip, vibrator other functions. these LDOs mask adjustable, programmable thru provide general purpose 3.3V fixed voltages. These LDOs require only ceramic capacitor. Also included programmable DC-DC stepdown converter that used power baseband audio LDOs, improving overall efficiency. STw4101's battery charging function controls gate voltage external P-Channel MOSFET
performs constant voltage constant current charging Lithium batteries. This function state machine capable managing battery charge operation independently microcontroller. variety supporting functions also integrated STw4101,
including drivers backlight, buzzer, indicator switch. with level shifters
keypad driver card supply also provided.
Most functions STw4101 controlled writing reading on-chip registers thru serial interface.
Baseband audio LDOs supplied DC-DC converter output thru external connection improve significantly overall power efficiency increase greatly talk standby time parameters.
©STMicroelectronics 2002 Printed Italy rights reserved STMicroelectronics corporate logo registered trademark STMicroelectronics group companies. other names property their respective owners.
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selected STMicroelectronics sales offices fax:
Full product information www.st.com/wireless
OREDR CODE: FLSTW4101/0302

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