ams AS3603-GXC Multi-standard power management unit Datasheet

austriamicrosystems
AS3603
Fact Sheet
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.
2 Key Features
!
!
The linear analog LDOs feature extremely high performance regarding:
Noise – typ 30µVRMS from 100Hz to 100kHz
! Line/Load Regulation – < 1mV static and < 10mV transient
! 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) 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.
!
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
This data sheet is applicable for device versions:
!
!
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 © 1997-2004, austriamicrosystems AG, Schloss Premstaetten, 8141 Unterpremstaetten, Austria-Europe.
www.austriamicrosystems.com
Revision 2.0
1-2
austriam i c r o systems
AS360 3
Fa ct Shee t
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
CURR2
33
34
D1
MBR0520
C1
1µF
White
LEDs
CURR1
35
36
Step Up DC/
DC Converter
≤15V
45mA
Current Source
4x(0.6-160mA)
VBAT_3
L1
22µH
STEPUP
C2
330nF
VBAT
V2_5
Analog LDO
Low Noise
2.5-3.2V
150mA
30
C22
1µF
AS3603
Audio
In
≥8Ω
LS1
AIN_L
38
C23
100nF
C25
100nF
AGND
31
AIN_R
37
AOUT_R
29
VCHARGER
20
C26
1µF
VGATE
Q1
Si3441
21
3.6V Li-Ion
3.6V Ni-MH
4.8V Ni-MH
R2
47kΩ
R4
50mΩ
1W Audio
Amplifier
ISENSEP
Ni-Mh,
Li-Ion,
Li-Po
Battery Charger
and Fuel Gauge
Internal LDO
2.5V
10mA
ISENSEN
GND_SENSE
27
ON
25
SDI
12
7
RF LDO
Low Noise
1.85-3.4V
75mA
17
SCLK
13
SDO
11
SCSB
14
Serial
Interface
Feedback
Step Down DC/DC
Converter
1.0-3.0V, 500mA
Boot
ROM
GND_PAD
10
RESET
VANA_1
RESET
R5
100kΩ
23
26
24
RBIAS
CREF
RPROGRAM
R6
220kΩ
C29
1µF
R7
Pad
19
SIM LDO
3.0V,20mA
VRF_2
VRF_3
VBAT_5
VRF_4
GPIO1
44
GPIO2
43
GPIO3
42
GPIO4
41
VDIG_1
47
VBAT_2
48
LX
Synthesizer
etc.
V2_5
ON Switch
Interrupt, LCD
Control, etc.
VDIG_2
VDD_DIG
VCO
TXCO
VBAT
C14
1µF
40
RF
Receiver
C12
1µF
V2_5
45
C15
1µF
Flash
Memory
Baseband
Core (Alternate)_
1.0-5.5V
VBAT 3.0-5.5V
L2
47µH
46
RF
Transmitter
3.0-5.5V
C13
1µF
39
Baseband
Core
C9
1µF
C11
1µF
18
3.0-5.5V
VBAT_4
C7
1µF
VANA_1
V5_6
Digital LDO
0.75-2.5V
200mA
I/F
VRF_1
C10
1µF
22
Digital LDO
0.75-2.5V
200mA
Digital Logic and
References
VANA_2
C5
1µF
C8
1µF
8
Baseband
Analog
VBAT_1
C6
1µF
RF LDO
Low Noise
1.85-3.4V
150mA
POR
V2_5 or VBAT
5
V5_6
Charge Pump
VANA_1
C4
1µF
9
GPIO
VANA_1
4
RF LDO
Low Noise
1.85-3.4V
150mA
15
16
V5_6
C3
1µF
6
C28
100nF
R3
47kΩ
1
Analog LDO
Low Noise
1.85-3.4V
150mA
RF LDO
Low Noise
1.85-3.4V
75mA
R1
2kΩ
VBAT
All caps
on VBAT C27
≥10µF
total
Power Management
Unit
C24
100nF
IN_R
DC
Charger
Adapter
≤15V
28
CAPN
3
Charge Pump
4.74-5.25V
30mA
VBAT
AOUT_L
CAPP
2
C16
1µF
C17
1µF
VSIM
C19
100nF
Baseband
Peripherals
C18
10µF
SIM Card
RPROGRAM
Copyright © 1997-2004, austriamicrosystems AG, Schloss Premstaetten, 8141 Unterpremstaetten, Austria-Europe.
www.austriamicrosystems.com
Revision 2.0
2-2
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