LTC3454 Datasheet (Linear Technology) - 1A Synchronous Buck-Boost High Current LED Driver

LTC3454, 1A Synchronous Buck-Boost High Current LED Driver

The LTC®3454 is a synchronous buck-boost DC/DC converter optimized for driving a single high power LED at currents up to 1A from a single cell Li-Ion battery input.

The regulator operates in either synchronous buck, synchronous boost, or buck-boost mode depending on input voltage and LED forward vol

LTC3454 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 Overtemperatu