DESCRIPTION
The LTC®1960 is a highly integrated battery charger and selector intended for portable products using dual smart batteries. A serial SPI interface allows an external microcontroller to control and monitor status of both batteries.

FEATURES
■ Complete Dual-Battery Charger/Selector System
■ Serial SPI Interface Allows External µC Control and Monitoring
■ Simultaneous Dual-Battery Discharge Extends Run Time by Typically 10%
■ Simultaneous Dual-Battery Charging Reduces Charging Time by Up to 50%
■ Automatic PowerPath™ Switching in <10µs Prevents Power Interruption
■ Circuit Breaker Protects Against Overcurrent Faults
■ 5% Accurate Adapter Current Limit Maximizes Charging Rate
■ 95% Efficient Synchronous Buck Charger
■ Charger Has Low 0.5V Dropout Voltage
■ No Audible Noise Generation, Even with Ceramic Capacitors
■ 11-Bit VDAC Delivers 0.8% Voltage Accuracy
■ 10-Bit IDAC Delivers 5% Current Accuracy
■ VIN Up to 32V; VBATT Up to 28V
■ Available in 5mm × 7mm 38-Pin QFN and 36-Pin Narrow SSOP Packages

APPLICATIONS
■ Portable Computers
■ Portable Instruments