LM3431 Datasheet - Texas Instruments

LM3431 3-Channel Constant Current LED Driver

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. The LM3431 drives 3 external NPN transistors or MOSFETs to deliver high accuracy constant current to 3 LED strings. Output current is .

LM3431 Features

* 1

* 2 LM3431Q/LM3431AQ are Automotive Grade Products that are AEC-Q100 Grade 1 Qualified (

* 40°C to 125°C operating junction temperature)

* 3-Channel Programmable LED Current

* High Accuracy Linear Current Regulation

* Analog and Digital PWM Dimming Control

LM3431-etcTI.pdf