AAT3620

PRODUCT DATASHEET www.DataSheet4U.com AAT3620178 1-Cell Li+ Switch Mode Battery Charger Features 4.3V~6.0V Input Range Up to 2.0A Charge Current Capability 1.5MHz PWM/Linear Charger Over 90% Full Rate Charge Efficiency Integrated Switching Device Integrated Sense Resistor Built-in Reverse Blocking Feature Battery Preconditioning/Constant Voltage/Constant Current Charge Mode Programmable End of Charge Current 1% Constant Voltage Mode Regulation Built-in Programmable Charging Timer Charge Current Indication Pin Over-Voltage, Over-Current, and Over-Temperature Protection Battery Over-Temperature Protection Power-On Reset and Soft-Start TDFN33-14 Package BatteryManagerTM General Description The AAT3620 BatteryManager™ is a member of AnalogicTech’s Total Power Management IC™ family. With the many functions added to mobile devices such as color display, camera with flash, organizer, video, etc, the battery capacity must keep pace with the power requirements. The AAT3620 is the ideal solution for high capacity Li+ batteries and can supply up to 2.0A charge current with minimal thermal impact to the system. The AAT3620 is a PWM switch mode / linear charger with high charge efficiency at the full constant current (fast charge) rate. Based on a 1.5MHz PWM step-down “buck” converter, the AAT3620 PWM switch mode controls the constant current charge mode up to 2.0A, and automatically switches to linear mode charging during the battery conditioning low lev...