LM3431 - 3-Channel Constant Current LED Driver

National Semiconductor

The LM3431 by National Semiconductor is a 3-Channel Constant Current LED Driver. Below is the official datasheet preview.

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LM3431 3-Channel Constant Current LED Driver by National Semiconductor - Datasheet Preview — Official preview page of the **LM3431** 3-Channel Constant Current LED Driver datasheet (National Semiconductor).

Datasheet Details

Part number	LM3431
Manufacturer	National Semiconductor
File Size	621.22 KB
Description	3-Channel Constant Current LED Driver
Datasheet	LM3431_NationalSemiconductor.pdf
Additional preview pages of the LM3431 datasheet.

LM3431 Product details

Description

The LM3431 is a 3-channel linear current controller combined with a boost switching controller ideal for driving LED backlight panels in space critical applications.

Features

LED cathode feedback to minimize regulator headroom and optimize efficiency. A DIM input pin controls LED brightness from analog or digital control signals. Dimming frequencies up to 25 kHz are possible with a contrast ratio of 100:1. Contrast ratios greater than 1000:1 are possible at lower dimming frequencies. The LM3431 eliminates audible noise problems by maintaining constant output voltage regulation during LED dimming. Additional features include LED short and open protection, fault delay/.

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Published: Mar 19, 2010 |