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

Linear Technology (now Analog Devices)

Datasheet Details

Part number	LTC3454
Manufacturer	Linear Technology (now Analog Devices)
File Size	176.74 KB
Description	1A Synchronous Buck-Boost High Current LED Driver
Datasheet	LTC3454 Datasheet

General 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 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 voltage.

PLED/PIN efﬁciency greater than 90% can be achieved over the entire usable range of a Li-Ion battery (2.7V to 4.2V).

Overview

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

Key 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.

More Datasheets from Linear Technology (now Analog Devices)

Part Number	Description
LTC3450	Triple-Output Power-Supply
LTC3452	Synchronous Buck-Boost MAIN/CAMERA White LED Driver
LTC3453	Synchronous Buck-Boost High Power White LED Driver
LTC3455	Dual DC/DC Converter
LTC3456	2-Cell Multi-Output DC/DC Converter
LTC3458	1.5MHz Synchronous Step-Up DC/DC Converter
LTC3458L	1.5MHz Synchronous Step-Up DC/DC Converter
LTC3459	10V Micropower Synchronous Boost Converter
LTC3400	Micropower Synchronous Boost Converter
LTC3400B	Micropower Synchronous Boost Converter