ACE4108

Max.2A Li-ion Switching Charger IC

VER 1.1

1

Description

The ACE4108 is a 2A Li-Ion battery switching charger intended for 12V. Low power dissipation, an

internal MOSFET and its compact package with minimum external components requirement makes the

ACE4108 ideal for portable applications. The ACE4108 includes complete charge termination circuitry,

automatic recharge and a ±1.5% 4.2V/4.35V float voltage.

External sense resistor and Reverse diode is not need. Build-in thermal feedback mechanism regulates

the charge current to control the die temperature during high power operation or at elevated ambient

temperature.

Battery charge current, charge timeout and end- of-charge indication parameters can program by external

components. Additional features include shorted cell detection and overvoltage protection.

Features



Very Low Power Dissipation



2A Maximum Charge Current



Standalone Capability with no

Requirement of External MOSFET, Sense Resistor or Blocking

Diode



Constant-Current/Constant-Voltage Operation with Thermal Regulation to Maximize Charge Rate

Without Risk of Overheating



Charges Single Cell Li-Ion Batteries Directly from USB Port



Drainage Charge Current Thermal Regulation Status Outputs for LED or System Interface



Preset 4.2V/4.35V float Voltage with ±1.5% Accuracy



Automatic Recharge



Available in DFN3x3-12 Package



RoHS Compliant and 100% Lead (Pb)-Free

Application



Cellular Telephones, PDA, MP3 Players



Charging Docks and Cradles



Handheld Battery-Powered Devices



Handheld Computers