一、DESCRIPTION

The BC911 is a 3.5A Li-Ion battery charger. It utilizes a 500 KHz synchronous buck converter topology to reduce power dissipation during charging. Low power dissipation, an internal MOSFET allow a physically small charger that can be embedded in a wide range of handheld applications. The BC911 includes complete charge termination circuitry, automatic recharge and a ±1% 4.2V float voltage.Battery charge current, charge timeout and end-of-charge indication parameters are set with external components. Additional features include shorted cell detection; temperature qualified charging and overvoltage protection. The BC911 is available in a ESOP8 and DFN10 package

二、FEATURES

 Input voltage range 4V~22V

 Dynamic input current allocation for maximum charging rate

 4.5A Maximum Charge Current

 No External MOSFETs and Blocking Diode Required

 Efficiency up to 95%

 Constant-Current/Constant-Voltage Operation with Thermal Regulation to Maximize Charge Rate Without Risk of Overheating

 Optional Battery Temperature Monitoring Before and During Charge Automatic Sleep Mode for Low-Power

 Over Current ProtectionH

 Consumption Available in ESOP8 and DFN10

 RoHS Compliant and 100% Lead (Pb)-Free

三、APPLICATIONS

Portable Media Players

Cellular and Smart mobile phone

PDA/DSC

Handheld Battery-Powered Devices

Handheld Computers

Charging Docks and Cradles