The LTC1960CG 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.
A proprietary PowerPath architecture supports simultaneous charging or discharging of both batteries. Typical battery run times are extended by 10%, while charging times are reduced by up to 50%. The LTC1960CG automatically switches between power sources in less than 10µs to prevent power interruption upon battery or wall adapter removal.
The synchronous buck battery charger delivers 95% efficiency with only 0.5V dropout voltage, and prevents audible noise in all operating modes. Patented* input current limiting with 5% accuracy charges batteries in the shortest possible time without overloading the wall adapter.
The LTC1960’s 5mm × 7mm 38-pin QFN and 36-pin narrow SSOP packages allow implementation of a complete SBS-compliant dual battery system while consuming minimum PCB area.
Feature
- 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 PowerPathTM 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
(Picture: Pinout)
