LM3431/LM3431A/LM3431Q/LM3431AQ 3-Channel Constant Current LED Driver with Integrated Boost Controller
LM3431/LM3431A/LM3431Q/ LM3431AQ
com
March 10, 2009
3-Channel Constant Current LED Driver with Integrated Boost Controller
General 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.
The LM3431 drives 3 external NPN transistors or
MOSFETs to deliver high accuracy constant current to 3 LED strings.
Output current is adjustable to drive strings in excess of 200 mA.
The LM3431 can be expanded to drive as many as 6 LED strings.
The boost controller dr...