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AS3653 Datasheet, PDF (1/2 Pages) ams AG – Power Management Unit for Mobile Phones | |||
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Power Management Unit for Mobile Phones
AS3653
PRODUCT BRIEF
General Description
The AS3653 device is a highly integrated solution for
power supply generation and monitoring, battery
management including charging and SIM card
communication. It is controlled via a serial control interface
and integrates all necessary system specific functions such
as clock, reset and interrupt generation, voltage and
temperature monitoring, accessory detection and On/Off
control.
Key Features
Supply Voltage Generation
⢠1 Analogue High Current LDO (1.85â¦3.4V, 250mA)
⢠1 Analogue Low Noise LDO (1.85â¦3.4V, 150mA)
⢠1 Analogue Low Noise LDO (1.85â¦3.4V, 100mA)
⢠2 RF Low Noise LDOs (1.85â¦3.4V, 100mA)
⢠1 Analogue Low Noise LDO (1.85â¦3.4V, 10mA)
⢠3 Digital Low Power LDOs (150mA)
⢠1 SIM Card Supply LDO (1.8 / 3.0V, 20mA)
⢠1 Low Noise, High PSRR Microphone Bias Generator
Complete Chemistry Independent Charger
⢠Autonomous Trickle Charge Mode with 60min Timeout
⢠Programmable Constant Current Charging
⢠Programmable Constant Voltage / Pulse Charging
⢠Integrated Gas Gauge
⢠Overvoltage protection: Battery and Charger Voltage
⢠Operation without battery
⢠Battery presence indication
⢠Programmable backup battery charger
SIM Card Interface
⢠Transparent SIM Card Interface with signal level
translators and enhanced ESD protection
System Control
⢠Clock Generation including low power 32kHz crystal
oscillator
⢠RTC with Alarm Function
⢠Programmable Reset Generation for System Controller
⢠Programmable Interrupt Controller
⢠Programmable Battery Voltage Monitor
⢠Temperature Sensor to prevent failure of the device
due to excess power dissipation
⢠2 programmable Accessory Recognition Input Pins
⢠On/Off Control Module
⢠Programmable Watchdog Module
⢠2 General Purpose Pulse Width Modulator (PWM)
Outputs with programmable frequency and duty cycle
⢠2 General Purpose LED Pattern Generator Outputs
with programmable pattern and repetition period
⢠8 General Purpose Input / Output Pins
⢠Wide Battery Supply Range 3.0â¦5.5V
⢠Serial Control Interface
⢠On-Chip Bandgap Tuning for High Accuracy (±1%)
⢠Excess Current and Thermal Protection
⢠0.35µm CMOS Solution
⢠QFN48 package
Applications
⢠Power Management Unit for GSM Mobile Phones
⢠1 Cell Li+ or 3â¦4 Cell NiMH powered devices
© 2004 austriamicrosystems AG. All rights reserved.
March 20045
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