a us t ria
m i c r o
s y s t e m s
AS3604
M u l t i - Sta n d a r d P o w e r M a n a g e m e n t U n i t
D a ta S h e e t
1 General Description
The AS3604 is a highly-integrated CMOS power manage-
ment device designed specifically for portable devices
such as mobile phones, PDAs, CD players, digital cam-
eras and other devices powered by 1-cell lithium-based or
3- to 4-cell nickel-based batteries. It can be used for any
mobile phone handset standards such as CDMA,
WCDMA, GSM, GPRS, EDGE, UTMS and other Japa-
nese or American standards.
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 30µV
RMS
from 100Hz to 100kHz
Line/Load Regulation – < 1mV static, < 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 effi-
ciency.
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 operation and HiFi ring-tones.
The device also features a chemistry-independent battery
charger including automatic trickle charging, gas gauge,
and programmable constant voltage and current charging.
Output voltages and start-up timings can be programmed
on metal-mask level, by register or by an external resistor.
2 Key Features
Te
ch
ni
c
The AS3604 is controlled via a serial interface and inte-
grates all necessary system specific functions such as
Reset, Watchdog, and Power-On Detection.
Ten Programmable High Performance LDOs
- Two Digital Low-Power LDOs (0.75 to 2.5V, 200mA;
250mA up to 1.4V)
- Three RF Low-Noise LDOs (1.85 to 3.4V, 200mA)
- Two RF Low-Noise LDOs (1.85 to 3.4V, 150mA;
200mA up to 2.6V)
- One SIM Low-Power LDO (1.8 to 3.0V, 20mA)
- One Periphery Low-Noise LDO (2.5 to 3.2V, 200mA)
- One Low-Power LDO (2.5V, 10mA)
Programmable High Efficiency DC/DC Converters
- Step Down: 0.8 to 3.4V, up to 500mA with 2.2MHz
Operating Frequency and Small External Coil
(2.2µH)
- 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 Gas Gauge
- Automatic Trickle Charging
- Programmable Constant Current Charging
- Programmable Constant Voltage Charging
- Pulse Charging
- Safety Functions (Low Battery Shutdown)
- Over- and Under-Temperature Charge Disable
- Operation without Battery
- Can Regulate the Current Through the Battery or
from the Charger
- Charger Input Overvoltage Protection (6V)
- Shutdown even with Connected Charger
- Charger Resume Operation
- Charger Interrupts (Inserted, Removed, Overvolt-
age, Resume)
- No-Battery Detection
Momentary Power Loss Detection
- Battery Supply Short-Interruption Detection
(<200ms); (e.g., due to a dropped phone)
Four Programmable Current Sources
- 8-Bit (0.625 to 160mA)
- Buzzer
- Vibrator
- LEDs
Wide Battery Supply Range 3.0 to 5.5V
Four General Purpose Switches (1Ω and 2Ω)
Three Programmable General Purpose I/O Pins
On-Chip Bandgap Tuning for High Accuracy (±1%)
Integrated Programmable Watchdog (7.5 to 1900ms)
Programmable Reset (10 to 110ms)
Shutdown Current typ 7µA (2.5V Always On)
Overcurrent and Thermal Protection
0.35µ CMOS Solution
2.1 Watt Power Dissipation @ SCSB = 70ºC
48-pin, 6x6mm QFN Package (0.4mm pitch)
www.austriamicrosystems.com
am
al
co s
A
nt G
en
ts
til
lv
3 Applications
Revision 1.22
Multi-standard power management for mobile phones,
PDAs, and any other 1-cell Li+ or 3- to 4-cell NiMh pow-
ered devices.
al
id
1 - 76
AS360 4
Data Sheet
austriam
i c r o
systems
Content
1 General Description
2 Key Features
3 Applications
.............................................................................................................................. 1
......................................................................................................................................... 1
........................................................................................................................................... 1
..................................................................................................................................... 2
....................................................................................... 6
.....................................................................................................................................6
4 Block Diagrams
5 Absolute Maximum Ratings (Non-Operating)
5.1 Operating Conditions
6 Detailed Functional Descriptions
6.1 Battery Charger Controller
6.3 Low Dropout Regulators
6.4 Charge Pump
6.2 Step Down DC/DC Converter
.......................................................................................................... 7
......................................................................................................................24
.............................................................................................................................7
..............................................................................................................................30
6.5 Step Up DC/DC Converter
6.7 Current Sinks
6.8 Audio Amplifier
7.1 Reset
6.6 General Purpose Input/Output
7 System Supervisory Functions
...........................................................................................................................................................56
....................................................................................................................................59
..........................................................................................................................61
7.2 Startup
..........................................................................................................................................................58
7.3 Protection Functions
7.4 Watchdog Block
...........................................................................................................................................60
.........................................................................................................................................63
............................................................................................................................63
7.5 Internal Reference Circuits
7.6 Low Power Mode
7.8 Serial Interface
7.7 Boot Sequence Detection
8 Register Map
....................................................................................................................................... 68
......................................................................................................................... 70
................................................................................................................72
...........................................................................................................................................70
9 Pinout and Packaging
9.1 Pin Descriptions
9.2 Package Drawings and Markings
10 External Parts List
11 Ordering Information
Te
www.austriamicrosystems.com
ch
ni
c
am
al
co s
A
nt G
en
ts
til
lv
Revision 1.22
...............................................................................................................................................41
...........................................................................................................................42
.....................................................................................................................44
...............................................................................................................................................50
.............................................................................................................................................53
...........................................................................................................56
.............................................................................................................................................64
............................................................................................................................. 74
......................................................................................................................... 75
al
id
4 - 76
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
