LM3431Q - 3-Channel Constant Current LED Driver

Product Overview

National Semiconductor

Datasheet Details

Part number	LM3431Q
Manufacturer	National Semiconductor
File Size	621.22 KB
Description	3-Channel Constant Current LED Driver
Datasheet	LM3431Q Datasheet
Note	This datasheet PDF includes multiple part numbers: LM3431Q, LM3431. Please refer to the document for exact specifications by model.
Additional preview pages of the LM3431Q datasheet.

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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Other Datasheets by National Semiconductor

LM3431A - 3-Channel Constant Current LED Driver
LM3431AQ - 3-Channel Constant Current LED Driver
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LM3434 - Common Anode Capable High Brightness LED Driver
LM34 - Precision Fahrenheit Temperature Sensors
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Published: Mar 19, 2010 |