GENERAL DESCRIPTION

The ACT3780 is a complete battery-charging and system power management solution for portable hand-held equipment using single-cell Lithium based batteries. The ACT3780 incorporates Active Semis proprietary ActivePath architecture which automatically selects the best available input supply for the system.

FEATURES

• ActivePathTM System Power Selection of Best Available Input Supply

• 50mΩ Battery Switch for Highest Efficiency

• Dynamic Control of Charging Current Allowing System to Draw Maximum Load from AC/USB Input

• ±0.5 Battery Charge Voltage Accuracy

• Up to 12V Input with Over Voltage Protection

• Thermal Regulation for Charge Control

• Charge Status Outputs for LED or System Interface

• Battery Voltage Level Indication

• Programmable Fast Charge Current

• Programmable Charging Timer

• Low Reverse Leakage Current

• Short-Circuit and Thermal Protection

• Preconditioning for Deeply Depleted Battery

• Low Quiescent Current Standby Mode

• Space-Saving, Thermally-Enhanced

  TQFN44-20 Packages

APPLICATIONS

• Personal Navigation Devices

• Smart Mobile Phones

• Blue-Tooth Devices

• Portable Media Players

• Portable Devices