2741AS–PMGMT–11/03

Features

– 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

– 0.5W on 8

Ω Audio Amplifier for Handsfree

– Audio Amplifier for Earpieces

– Audio Amplifier for Car Kit

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 vibra-

tor 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 mul-

tiplexer 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 appli-

cations on 2.5G and 3G terminals.

Power

Management

AT73C201

Power Supply

and Battery

Management IC

Preliminary

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.