ATMEL AT73C201 Power supply and battery management ic Datasheet

Features
• Eight High Performance Low Dropout Voltage Regulators (LDO)
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– Three Low Dropout Voltage Regulators (LDO) for Analog, Memories and Baseband
Digital I/O
– Two Low Dropout Voltage Regulators (LDO) High PSRR Low Noise for Radio
Section
– Two Low Dropout Voltage Regulators (LDO) Dual Mode High PSRR for Baseband
Core Section
DC to DC 5.6V Converter
One 4.5V Voltage Regulator
10V Supply Generator
Li-Ion and Ni-Mh Battery Charge Control Interface
Analog to Digital 8-bit Converter
Safety Charge Timers
Power On/Off And Reset Control Logic
Over And Under-voltage System Shutdown
Voltage Detectors With Auto Power Off
On-chip Temperature Sensor
NTC Programmable Current Bias
Three Audio Amplifiers
– 0.5W on 8 Ω Audio Amplifier for Handsfree
– Audio Amplifier for Earpieces
– Audio Amplifier for Car Kit
Two Backlight LED Drivers for Keyboard and Display
Two Auxiliary Constant Current Source LED Drivers
Vibrator Driver
Two Power Supply Switches
32 kHz Crystal Oscillator
Two Digital to Analog 8-bit Converters
Serial Peripheral Interface (SPI)
100-Thin Fine-pitch Ball Grid Array Package (TFBGA), 9 x 9 mm
Power
Management
AT73C201
Power Supply
and Battery
Management IC
Preliminary
Description
The AT73C201 is a low cost, high performance, fully integrated Battery and Power
Management System for Wireless Cellular Terminals.
The AT73C201 integrates all the regulated power supplies needed to power a terminal
chipset from a Lithium-Ion or Ni-Mh battery pack to Baseband ICs and Memories,
Radio Transceiver, Analog, VCXO, LNA and PA bias and Sim Card in the case of
GSM.
Auxiliary low Ron power supply PMOS switches are available from either the battery
pack or internal regulated power supplies, providing optimum power management by
turning on or off different elements of a handset. The AT73C201 also includes a vibrator motor driver, a set of LED drivers, a smart reset circuit, and a Battery Charger
Switch Driver with built-in state machine for safe boot and pre-charge operation.
In addition, a set of 3 Audio Programmable Gain Amplifiers are provided for handsfree
(on 8 Ω Loudspeaker), Earpiece and Car Kit easy interfacing.
The functions are supervised by a set of voltage monitors, timers and a temperature
shutdown circuit connected to the internal state machine.
Voltages and on-chip temperatures are also visible from an external pin through a multiplexer for proper connection to the external Baseband ADC.
The AT73C201 is available in a 9x9mm outline, 10x10 ball matrix BGA for optimum
size and performance combination. Its very low standby power dissipation and its high
noise and PSRR performances make the AT73C201 ideally suitable for recent applications on 2.5G and 3G terminals.
2741AS–PMGMT–11/03
Note: This is a summary document. A complete document
is not available at this time. For more information, please
contact your local Atmel sales office.
Functional
Diagram
Figure 1. AT73C201 Functional Diagram
VGATE
VVIB
VBAT
BCKL
BCKK
4-bit DAC
Backlight
Driver
4-bit DAC
Backkey
Driver
LED1
LED2
Vibrator Driver
VCHG
Charge Control Interface
LD1
Driver
10 mA
LED2
Driver
10 mA
VDD4
SPKP
Audio1
SPKN
Digital Serial Interface
SPI Bus
AUD3R
Audio2
AUD3L
NTC
NTC Driver
5-bit DAC
Power Supply
Supervisor
Audio3
Fuse Block
AUD20
Measurement
Multiplexer
VMES
VREG9
Temperature
Supervisor
REG9
REG8
VBCK
Tempeature
Sensor
Power Management
REG1
VBAT
REG4
Power On Reset
OSC2
In
REG2
Squarer OSC1
OSC2
Out
DCDC
XTAL1
REG6
XTAL2
Crystal OSC1
REG3
REG7
Switches
SW1
2
SW2
DAC1
DAC1
VREG8
DAC2
DAC2
10V Supply
Generator
HVSW
VBAT
VREG1
VREG4
VREG2
DCDCO
VREG6
VREG3
VREG7
Voltage
Reference
RREF
CREF
VDD1
VDD2
VDD4
AT73C201
2741AS–PMGMT–11/03
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2741AS–PMGMT–11/03
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