LT3744EUHE#TRPBF Description

The LT3744EUHE#TRPBF is a fixed frequency synchronous step-down DC/DC controller designed to drive a LED load at up to 20A continuous 40A pulsed. The peak current mode controller will maintain ±3% LED current regulation over a wide output voltage range, from VEE to VIN. By allowing VEE to float to negative voltages, several LEDs in series can be driven from a single Li-Ion battery with a simple, single step-down output stage. PWM dimming is achieved with the PWM pins. 

LT3744EUHE#TRPBF Features

Ideal for Driving Up to 40A LEDs

Up to 3000:1 PWM Dimming

20:1 Analog Dimming

±3% Current Regulation Accuracy

±3% Voltage Regulation Accuracy

Unique Inverting Buck-Boost Topology Allows Grounded Heat Sink to Be Used for RGB LEDs

3.3V to 36V Input Voltage Range

Peak Current Mode with DC LED Current Sensing

Open and Shorted LED Protection and Fault Reporting

LT3744EUHE#TRPBF Applications

LED Driver for DLP Projectors

Heads-Up Displays

High Power LED

Automotive 

Body electronics & lighting 

Communications equipment