austria
micro
systems
AS3603
Multi-Standard Power Management Unit
Fact Sheet
Copyright © 1997-2004, austriamicrosystems AG, Schloss Premstaetten, 8141 Unterpremstaetten, Austria-Europe.
www.austriamicrosystems.com Revision 2.0 1 - 2
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 lithium-
based 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 perfor-
mance regarding:
!Noise – typ 30µVRMS from 100Hz to 100kHz
! Line/Load Regulation – < 1mV static and < 10mV tran-
sient
!Power Supply Rejection – > 70dB @ 1kHz
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 @ 8Ω) sup-
ports handsfree mobile phone operation and HiFi ring-
tones.
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 inte-
grates 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.
This data sheet is applicable for device versions:
!AS3603-FxC
!AS3603-GxC
2 Key Features
!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 @ 4Ω -stereo
-1W @ 8Ω -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
!Wide Battery Supply Range 3.0V - 5.5V
!Four General Purpose Switches (1Ω and 2Ω)
!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 7µA (2.5V Always On)
!Overcurrent and Thermal Protection
!0.35µ CMOS Solution
!48-pin, 6x6mm QFN Package (0.4mm pitch)
!48-pin, 7x7mm QFN Package (0.5mm pitch)
!2.1 Watt Power Dissipation @ TAMBIENT = 70ºC
3 Application
Multi-standard power management for mobile phones,
PDAs, and 1-cell Li+ or 3 to 4-cell Ni-Mh powered devices.
AS3603 austria
micro
systems
Fact Sheet
Copyright © 1997-2004, austriamicrosystems AG, Schloss Premstaetten, 8141 Unterpremstaetten, Austria-Europe.
www.austriamicrosystems.com Revision 2.0 2 - 2
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
V2_5
AS3603
Power Management
Unit
Charge Pump
4.74-5.25V
30mA
Analog LDO
Low Noise
2.5-3.2V
150mA
Analog LDO
Low Noise
1.85-3.4V
150mA
RF LDO
Low Noise
1.85-3.4V
150mA
RF LDO
Low Noise
1.85-3.4V
150mA
RF LDO
Low Noise
1.85-3.4V
75mA
RF LDO
Low Noise
1.85-3.4V
75mA
Step Up DC/
DC Converter
≤15V
45mA
Current Source
4x(0.6-160mA)
L1
22µH
VBAT
CAPP CAPN
32
C2
330nF
V5_6
V5_6
Charge Pump
C3
1µF
1
4
6
VANA_1
C4
1µF
C6
1µF
C8
1µF
C9
1µF
C13
1µF
Baseband
Analog
3.0-5.5V
Baseband
Core
VANA_2
9
7
VRF_1 RF
Transmitter
VRF_2 RF
Receiver
GPIO
45
44
43
42
5VBAT_1
8VBAT_4
3.0-5.5V
VBAT
17 VRF_3 VCO
TXCO
18 VBAT_5
19 VRF_4 Synthesizer
etc.
Internal LDO
2.5V
10mA
V2_5
22
C5
1µF
C7
1µF
C10
1µF
C12
1µF
V2_5
ON Switch
GPIO1
GPIO2
GPIO3
GPIO4
Interrupt, LCD
Control, etc.
VANA_1
V5_6
Digital LDO
0.75-2.5V
200mA
SIM LDO
3.0V,20mA
C11
1µF
Digital LDO
0.75-2.5V
200mA
Step Down DC/DC
Converter
1.0-3.0V, 500mA
C14
1µF
C15
1µF
Flash
Memory
Baseband
Core (Alternate)
_
VDIG_1
41
VDIG_2
39
VDD_DIG
40
VBAT
VBAT_2
47
LX
48
C16
1µF
C17
1µF
C18
10µF
Baseband
Peripherals
L2
47µH
C19
100nF
SIM Card
POR
VANA_1
Digital Logic and
References
Boot
ROM
R7
RPROGRAM
R6
220kΩC29
1µF
242623
RPROGRAM
CREF
RBIAS
10
RESET
R5
100kΩ
RESET
VANA_1
I/F
Serial
Interface
12
13
11
14
SDI
SCLK
SDO
SCSB
V2_5 or VBAT
25ON
27GND_SENSE
Ni-Mh,
Li-Ion,
Li-Po
Battery Charger
and Fuel Gauge
R3
47kΩ
R2
47kΩ
C27
R4
50mΩ
C28
100nF
16
15
3.6V Li-Ion
3.6V Ni-MH
4.8V Ni-MH
VBAT
All caps
on VBAT
≥10µF
total ISENSEP
ISENSEN
21
Pad
GND_PAD
VGATE
C26
1µFR1
2kΩ
20
VCHARGER
DC
Charger
Adapter
≤15V
29
AOUT_R
28
AOUT_L
≥8Ω
LS1
1W Audio
Amplifier
C23
100nF
C24
100nF
Audio
In
IN_R
38
37
AIN_R
AIN_L
AGND 31C25
100nF
30
VBAT_3
VBAT
C22
1µF
C1
1µF
STEPUP
36
D1
MBR0520
White
LEDs
Vibrator
Buzzer
CURR1
35343332
CURR2CURR3CURR4
VSIM
46
1.0-5.5V
Feedback
Q1
Si3441
3.0-5.5V
