LTC3454 Datasheet | Linear Technology

1A Synchronous Buck-Boost High Current LED Driver Features n High Efficiency: >90% Typical in Torch Mode, >80% in Flash Mode n Wide VIN Range: 2.7V to 5.5V n Up to 1A Continuous Output Current n 3.5% LED Current Programming Accuracy n Internal Soft-Start n Open/Shorted LED Protection n Constant Frequency 1MHz Operation n Zero Shutdown Current n Overtemperature Protection n Small Thermally Enhanced 10-Lead (3mm × 3mm) DFN Package APPLICATIONS n Cell Phone Camera Flash n Cell Phone Torch Lighting n Digital Cameras n PDAs n Misc Li-Ion LED Drivers DESCRIPTION The LTC®3454 is a synchronous buck-boost DC/DC converter optimized for driving a single high power LED at currents up to 1A...