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SL1053

Advanced Lithium-Ion Linear Battery Charger

General Description

SL1053 is a single Lithium-Ion or Lithium-Polymer cell linear battery charger which is

designed for compact and cost-sensitive handheld devices. It combines charge status indication,

charge termination, battery temperature monitoring, and high accuracy current and voltage

regulation in a SOP-8 package.

SL1053 charges the battery in three modes, precharge, constant current, constant voltage. If

the battery voltage is below the precharge threshold VO(MIN), the SL1053 precharges the battery

with a lower conditioning current. After precharge, the SL1053 applies a constant current to the

battery. An external sense-resister sets the charge current. The constant voltage mode continues

until the battery reaches the regulation

The battery temperature is continuously measured by an external thermistor through the TS

pin. SL1053 inhibits charge until the temperature is within the range defined by users.

Features

For Single Lithium-Ion or Lithium-Polymer Cell Battery Pack 4.2V

A Few External Components are Required

Precharge, Constant Current, Constant Voltage Modes

Battery Temperature Monitor

Charge Status Indication

Automatic Battery Recharge

Charge Termination Detect

Auto Low Power Sleep Mode when VDD Power is removed

MSOP-8 Package

RoHS Compliant and 100% Lead (Pb)-Free

Applications

Digital Cameras

PDAs

Cellular Phones

Information Appliance

Pin Configurations