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General Description

The AAT3687 BatteryManager is a highly integrated single-cell lithium-ion/polymer battery charger IC designed to operate with AC adapter inputs. It requires a minimum number of external components. The AAT3687 precisely regulates battery charge voltage and current for 4.2V lithiumion/polymer battery cells. Adapter charge current rates can be programmed up to 1.5A. An active thermal management system regulates the fast charge constant current for all ambient temperature and input vs. output voltage conditions.

Features

? Input Voltage Range: 4.0V to 5.5V

? Up to 1.5A Charging Current

? Adapter Present Indicator (ADPP#)

? High Level of Integration with Internal:

— Charging Device

— Reverse Blocking Diode

— Current Sensing

? Active Thermal Loop Charge Reduction

? Automatic Recharge Sequencing

? Battery Temperature Monitoring

? Full Battery Charge Auto Turn-Off / Sleep Mode

? Over-Voltage, Over-Temperature, and Emergency Thermal Protection

? Power On Reset and Soft Start

? Serial Interface Status Report

? 12-Pin 3x3mm TDFN Package

? -40°C to +85°C Temperature Range

Applications

? Cellular Telephones

? Digital Still Cameras

? Hand Held PCs

? MP3 Players

? Personal Data Assistants (PDAs)

? Other Lithium-Ion/Polymer Battery-Powered Devices