IS31LT3957A HIGH VOLTAGE LED LIGHTING CONTROLLER

Lumissil

Description

IS31LT3957A HIGH VOLTAGE LED LIGHTING CONTROLLER WITH FAULT PROTECTION March 2020 GENERAL .
The IS31LT3957A is a current mode PWM controller designed to drive a low side external NMOS FET for wide input/output voltage range and high LED curre.

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Datasheet Specifications

Part number: IS31LT3957A
Manufacturer: Lumissil
File Size: 604.77 KB
Datasheet: IS31LT3957A-Lumissil.pdf
Description: HIGH VOLTAGE LED LIGHTING CONTROLLER

Features

* Wide high voltage input range: 5V to 75V
* Supports boost, buck-boost, SEPIC and buck topology
* ±2% output current accuracy
* Adjustable operating frequency range of 100kHz~1MHz
* Programmable soft start to avoid inrush current
* Fixed under voltage lockout threshold

Applications

* An external resistor senses the high side output current of the LED string. A high side sense is the most flexible current sensing scheme, since it functions in either boost or buck-boost mode configurations. The controller can be configured with an external resistor to operate between 100kHz~1MHz

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IS31LT3957A HIGH VOLTAGE LED LIGHTING CONTROLLER Lumissil

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