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austriamicrosystems
AS3603
Multi-Standard Power Management Unit 1 General Description
The AS3603 is a highly-integrated, ultra-flexible CMOS power management device designed specifically for portable devices such as any standard of mobile phones, PDAs, CD players, digital cameras and other devices powered by 1-cell lithiumbased or 3- 4-cell nickel-based batteries. The device incorporates low dropout regulators (LDOs), DC/DC converters, a complete battery charger, and an audio power amplifier onto one die. The linear analog LDOs feature extremely high performance regarding: Noise - typ 30VRMS from 100Hz to 100kHz ! Line/Load Regulation - < 1mV static and < 10mV transient ! Power Supply Rejection - > 70dB @ 1kHz
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Fact Sheet
2 Key Features
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Ten Programmable High Performance LDOs - 2 Digital Low Power LDOs (0.75-2.5V, 200mA) - 3 RF Low Noise LDOs (1.85 - 3.4V, 150mA) - 2 RF Low Noise LDOs (1.85 - 3.4V, 75mA) - 1 SIM Low Power LDO (3.0V, 20mA) - 1 Periphery Low Noise LDO (2.5 - 3.2V, 150mA) - 1 Low Power LDO (2.5V, 10mA) Programmable High Efficiency DC/DC Converters - Step Down: 1.0 - 3.0V, up to 500mA - Step Up: 15V, 45mA, (for White LEDs) Stereo Audio Power Amplifier - 0.5W @ 4 -stereo - 1W @ 8 -bridged - Digital Volume Control, 3dB Steps - Click- and Pop-Less Start-Up and Power-Down Complete Chemistry-Independent Battery Charger - Integrated Fuel Gauge - Automatic Trickle Charging - Programmable Constant Current Charging - Programmable Constant Voltage Charging - Programmable Pulse Charging - Safety Functions (Low Battery Shutdown) - Operation without Battery - No-Battery detection Four 8-Bit Programmable Current Sources (0.625mA - 160mA) support: - Buzzer - Vibrator - LEDs
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The integrated Step Down DC/DC Converter does not require an external Schottky diode yet provides very high efficiency (up to 95%) throughout the whole operating range. It can be either used as a stand-alone device or as a pre-regulator for LDOs to increase overall device efficiency. A Step Up DC/DC Converter is included to supply power for white LEDs together with programmable current sources to control LED brightness. A low-distortion audio power amplifier (1 Watt @ 8) supports handsfree mobile phone operation and HiFi ringtones. The device also features a chemistry-independent battery charger including fuel gauge circuitry, automatic trickle charging, programmable constant current, constant voltage and pulse charging. The AS3603 is controlled via a serial interface and integrates all necessary system specific functions such as Reset, Watchdog, and Power-On Detection. Regulator output voltages are programmable by software. Eight preset startup timings can be selected by an external resistor.
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Wide Battery Supply Range 3.0V - 5.5V ! Four General Purpose Switches (1 and 2) ! Four Programmable General Purpose I/O Pins ! On-Chip Bandgap Tuning for High Accuracy (+/-1%) ! Integrated Programmable Watchdog (7.5 - 1900ms) ! Programmable Reset (10 - 110ms) ! Shutdown Current typ 7A (2.5V Always On) ! Overcurrent and Thermal Protection ! 0.35 CMOS Solution ! 48-pin, 6x6mm QFN Package (0.4mm pitch) ! 48-pin, 7x7mm QFN Package (0.5mm pitch) ! 2.1 Watt Power Dissipation @ TAMBIENT = 70C
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3 Application
This data sheet is applicable for device versions:
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AS3603-FXC AS3603-GxC
Multi-standard power management for mobile phones, PDAs, and 1-cell Li+ or 3 to 4-cell Ni-Mh powered devices.
Copyright (c) 1997-2004, austriamicrosystems AG, Schloss Premstaetten, 8141 Unterpremstaetten, Austria-Europe. www.austriamicrosystems.com Revision 2.0 1-2
AS360 3 Fa ct Shee t
austriam i c r o systems
4 Block Diagram
Figure 1. AS3603 Block Diagram. Option: Audio Amplifier In Differential Mode, Step Down DC/DC Converter as Pre-regulator for Digital LDOs
Buzzer Vibrator CURR4 32 CURR3 33 C1 1F D1 MBR0520 L1 22H VBAT CAPP 2 CAPN 3 C2 330nF
White LEDs CURR2 34 CURR1 35
STEPUP 36
Current Source 4x(0.6-160mA)
Step Up DC/ DC Converter 15V 45mA
V2_5
Charge Pump 4.74-5.25V 30mA
1
V5_6 C3 1F
V5_6 Charge Pump
VBAT_3 VBAT C22 1F
30
Analog LDO Low Noise 2.5-3.2V 150mA
4
VANA_1 C4 1F Baseband Analog
5
VBAT_1 C5 1F C6 1F 3.0-5.5V Baseband Core
AS3603
AOUT_L AIN_L C23 100nF AGND AIN_R C24 100nF AOUT_R DC Charger Adapter 15V VCHARGER C26 1F Q1 Si3441 VBAT All caps on VBAT C27 10F total 3.6V Li-Ion 3.6V Ni-MH 4.8V Ni-MH R2 47k R4 50m C28 100nF R3 47k ISENSEN 16 VANA_1 27 25 12 13 11 14 ISENSEP 15 R1 2k VGATE 21 29 20 31 37 28 Audio In 8 LS1 C25 100nF 38
Analog LDO Low Noise 1.85-3.4V 150mA RF LDO Low Noise 1.85-3.4V 150mA
6
VANA_2
9
VRF_1 C8 1F
Power Management Unit
1W Audio Amplifier
RF Transmitter
8
VBAT_4 3.0-5.5V VRF_2 C9 1F C10 1F RF Receiver
RF LDO Low Noise 1.85-3.4V 150mA RF LDO Low Noise 1.85-3.4V 75mA
7
IN_R
17
VRF_3 C11 1F
VCO TXCO
18
VBAT_5 C12 1F C13 1F
VBAT
Ni-Mh, Li-Ion, Li-Po Battery Charger and Fuel Gauge
RF LDO Low Noise 1.85-3.4V 75mA Internal LDO 2.5V 10mA
19
VRF_4
Synthesizer etc.
22 VANA_1 V5_6
V2_5 C7 1F
V2_5 ON Switch
45 44
GPIO1 GPIO2 GPIO3 GPIO4 VDIG_1 C14 1F Flash Memory Baseband Core (Alternate)_ Interrupt, LCD Control, etc.
GPIO
43 42
POR Digital LDO 0.75-2.5V 200mA Digital LDO 0.75-2.5V 200mA Digital Logic and References I/F Boot ROM
GND_PAD 10 RESET 23 RBIAS R6 220k 26 CREF C29 1F 24 RPROGRAM R7 RPROGRAM Pad Feedback
41
GND_SENSE ON V2_5 or VBAT SDI
39
VDIG_2 C15 1F
40 47 48
VDD_DIG VBAT_2 LX C16 1F
1.0-5.5V VBAT 3.0-5.5V L2 47H C17 1F C19 100nF Baseband Peripherals C18 10F SIM Card
Serial Interface
SCLK SDO SCSB
Step Down DC/DC Converter 1.0-3.0V, 500mA SIM LDO 3.0V,20mA
46
VSIM
VANA_1 RESET
R5 100k
Copyright (c) 1997-2004, austriamicrosystems AG, Schloss Premstaetten, 8141 Unterpremstaetten, Austria-Europe. www.austriamicrosystems.com Revision 2.0 2-2

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