Part number:
LM3431
Manufacturer:
National Semiconductor
File Size:
621.22 KB
Description:
3-channel constant current led driver.
LM3431_NationalSemiconductor.pdf
Datasheet Details
Part number:
LM3431
Manufacturer:
National Semiconductor
File Size:
621.22 KB
Description:
3-channel constant current led driver.
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
* 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
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