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LTC3454

Part Number	LTC3454
Manufacturer	Linear Technology
Description	1A Synchronous Buck-Boost High Current LED Driver
Published	Apr 18, 2010
Detailed Description	LTC3454 1A Synchronous Buck-Boost High Current LED Driver FEATURES n High Efﬁciency: >90% Typical in Torch Mode, >80% ...
Datasheet	LTC3454 PDF File

Overview

LTC3454 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 fro...

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