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SS8000G

GSM Power-Management System

Handles all GSM baseband power management

Input range 2.8V to 5.5V

Charger input up to 15V

Seven LDOs optimized for specific GSM

subsystems

High operating efficiency and low stand-by

current

Li-Ion and NiMH battery charge function

SIM card interface

Three open-drain output switches to control

the LED, alerter and vibrator

Thermal overload protection

Under-voltage lock-out protection

Over-voltage protection

Power-on reset and start-up timer

QFN-48 package

The SS8000 is a power-management system chip

optimized for GSM handsets. It contains seven LDOs,

one to power each of the critical GSM sub-blocks.

Sophisticated controls are available for power-up

during battery charging, keypad interface, and RTC alarm.

The SS8000 is optimized for maximum battery life

featuring a ground current of only 107µA in standby and

187µA when the phone is in operation.

The SS8000 battery charger can be used with lithium

ion (Li-Ion) and nickel metal hydride (NiMH) batteries.

The

SS8000

contains

three

open-drain

output

switches for LED, alerter and vibrator control. The SIM

interface provides the level shift between SIM card and

microprocessor.

The SS8000 is available in a 48-pin QFN package. The

FEATURES

DESCRIPTION

APPLICATIONS

GSM/GPRS Mobile Handsets

Basic and High-end Phones

12/06/2004 Rev.2.10

This device is

supplied with a Pb-free lead finish (second-level interconnect).