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LT3474-1 - Step-Down 1A LED Driver

This page provides the datasheet information for the LT3474-1, a member of the LT3474 Step-Down 1A LED Driver family.

Description

The LT®3474/LT3474-1 are fixed frequency step-down DC/DC converters designed to operate as constant-current sources.

An internal sense resistor monitors the output current allowing accurate current regulation, ideal for driving high current LEDs.

Features

  • n n n n n n n n n n n n.

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Full PDF Text Transcription

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www.DataSheet4U.com LT3474/LT3474-1 Step-Down 1A LED Driver FEATURES n n n n n n n n n n n n DESCRIPTION The LT®3474/LT3474-1 are fixed frequency step-down DC/DC converters designed to operate as constant-current sources. An internal sense resistor monitors the output current allowing accurate current regulation, ideal for driving high current LEDs. High output current accuracy is maintained over a wide current range, from 35mA to 1A, allowing a wide dimming range. Unique PWM circuitry allows a dimming range of 400:1, avoiding the color shift normally associated with LED current dimming. The high switching frequency offers several advantages, permitting the use of small inductors and ceramic capacitors.
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