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PDF AS3603 Data sheet ( Hoja de datos )
| Número de pieza | AS3603 | |
| Descripción | Multi-Standard Power Management Unit | |
| Fabricantes | austriamicrosystems | |
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austriamicrosystems
AS3603
Multi-Standard Power Management Unit
Data Sheet
1 General Description
The AS3603 is a highly-integrated CMOS power manage-
ment device designed specifically for portable devices
such as any mobile phone standard, PDAs, CD players,
digital cameras and other devices powered by 1-cell lith-
ium-based or 3- to 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 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 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 volt-
age 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 exter-
nal resistor.
This data sheet is applicable for device versions:
! AS3603-Jxx-x
! AS3603-Hxx-x
2 Key Features
! Ten Programmable High Performance LDOs
- Two Digital Low-Power LDOs (0.75 to 2.5V, 200mA)
- Three RF Low-Noise LDOs (1.85 to 3.4V, 150mA)
- Two RF Low-Noise LDOs (1.85 to 3.4V, 75mA)
- One SIM Low-Power LDO (3.0V, 20mA)
- One Periphery Low-Noise LDO (2.5 to 3.2V, 150mA)
- One Low-Power LDO (2.5V, 10mA)
! Programmable High Efficiency DC/DC Converters
- Step Down: 1.0 to 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 to 160mA) support:
- Buzzer
- Vibrator
- LEDs
! Wide Battery Supply Range 3.0 to 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 to 1900ms)
! Programmable Reset (10 to 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.
www.austriamicrosystems.com
Revision 3.33
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1 page  
AS3603
Data Sheet
austriamicrosystems
6.7.1 Current Sink Registers ........................................................................................................................ 48
6.8 Audio Amplifier .............................................................................................................................................. 51
6.8.1 Audio Amplifier Registers .................................................................................................................... 53
7 System Supervisory Functions ............................................................................................................. 54
7.1 Reset ............................................................................................................................................................. 54
7.1.1 Reset Conditions ................................................................................................................................. 54
7.1.2 Reset Registers ................................................................................................................................... 55
7.1.3 Reset Cycle ......................................................................................................................................... 56
7.1.4 res_con: Reset Control ....................................................................................................................... 56
7.2 Startup ........................................................................................................................................................... 56
7.2.1 Normal Startup .................................................................................................................................... 56
7.2.2 Programmable Startup Sequences ..................................................................................................... 56
7.2.3 Startup from Battery Charger .............................................................................................................. 56
7.3 Protection Functions ...................................................................................................................................... 57
7.3.1 TMP_SV: Temperature Supervision ................................................................................................... 57
7.3.2 Overtemperature Detection ................................................................................................................. 57
7.3.3 Overtemperature Detection Register .................................................................................................. 57
7.4 Watchdog Block ............................................................................................................................................. 58
7.4.1 Watchdog Registers ............................................................................................................................ 58
7.5 Internal Reference Circuits ............................................................................................................................ 59
7.5.1 Internal Reference Registers ............................................................................................................. 60
7.6 Low Power Mode ........................................................................................................................................... 61
7.7 Boot Sequence Detection .............................................................................................................................. 61
7.7.1 ON Detection Register ........................................................................................................................ 61
7.8 Serial Interface .............................................................................................................................................. 62
7.8.1 Digital Input/Output DC/AC Characteristics ......................................................................................... 62
7.8.2 SPI Compatible Serial Interface .......................................................................................................... 63
7.8.3 I2C Compatible Serial Interface ........................................................................................................... 63
8 Register Map ........................................................................................................................................ 66
9 Pinout and Packaging ........................................................................................................................... 68
9.1 Pin Descriptions ............................................................................................................................................ 68
9.2 Package Drawings and Markings .................................................................................................................. 70
10 External Parts List .............................................................................................................................. 74
11 Ordering Information ........................................................................................................................... 75
12 Errata .................................................................................................................................................. 76
www.austriamicrosystems.com
Revision 3.33
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5 Page 
AS3603
Data Sheet
austriamicrosystems
Battery Charger Controller
The charge controller will regulate the battery voltage to a value set by bit Li4v2 (page 19):
! During Constant Voltage mode, the charge current will decrease and eventually drop below the value set by
TrickleCurrent (page 20). If the measured charge current is less than or equal to TrickleCurrent for 2 consecutive
times, charging is terminated and bit EOC (page 19) is set. Charging will resume if the battery voltage drops below
VNOBATDET.
! If the battery voltage (VBAT_5) drops below Vnobatdet (page 9), e.g. if the battery is removed after charging is finished,
EOC will be cleared and the battery charger controller will resume in constant voltage mode to enable operation of
the device without battery. The "no battery" status is indicated with bit NoBat (page 19).
If the battery is replaced after charging is finished and the charge current exceeds the value set by
ConstantCurrent (page 20), the charge controller will clear bit CVM and return to Constant Current or Fast Charge
mode, depending on bit Fast (page 19). Note that bit CVM will be ambiguous if bit Fast is set.
Figure 5. Startup and Constant Voltage Charging of Lithium-based Batteries
External Charger
at Pin VCHARGER
VCHDET
VBAT
0V
VUVLO
3.1V
VCHOFF
4.2V Graphite Anode (Li4v2 = 1)
4.1V Coke Anode (Li4v2 = 0)
CV Charge Terminates when
Charge Current drops below
Trickle Current
ICHARGE
LDO
Voltages
Reset
Register Settings (Write)
BatType
ChEn
Pulse
Register Settings (Read)
ChDet
Trickle Current
Power up
LDOs =
Boot ROM
t=0
6-11ms
10-110ms
µC: Activate
Charger
Constant Current or
Fast Current
Serial Communication
Possible
t
µC: Turn Off
Charger
Trickle
ChAct
CVM
EOC
Trickle Charge Mode
Principle Only. Not To Scale.
Power Up;
No Charge
Constant Current Mode Constant Voltage Mode
www.austriamicrosystems.com
Revision 3.33
11 - 77
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet AS3603.PDF ] | |
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