LTC4009-1
Features n General Purpose Battery Charger Controller n Efficient 550k Hz Synchronous Buck PWM Topology n ±0.5% Output Float Voltage Accuracy n Programmable Charge Current: 4% Accuracy n Programmable AC Adapter Current Limit:
3% Accuracy n No Audible Noise with Ceramic Capacitors n Wide Input Voltage Range: 6V to 28V n Wide Output Voltage Range: 2V to 28V n Indicator Outputs for AC Adapter Present, Charging,
C/10 Current Detection and Input Current Limiting n Analog Charge Current Monitor n Micropower Shutdown n Thermally Enhanced 20-Pin 4mm × 4mm × 0.75mm
QFN Package
Applications n Notebook puters n Portable Instruments n Battery Backup Systems
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and Power Path and Thin SOT are trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents including 5723970.
LTC4009 LTC4009-1/LTC4009-2
High Efficiency, Multi-Chemistry Battery Charger...
