LM3429 Datasheet | National Semiconductor

LM3429 N-Channel Controller for Constant Current LED Drivers .. PRELIMINARY April 30, 2009 N-Channel Controller for Constant Current LED Drivers General Description The LM3429 is a versatile high voltage LED driver controller. With the capability to be configured in a Buck, Boost, BuckBoost (Flyback), or SEPIC topology, and an input and output operating voltage rating of 75V, the LM3429 is ideal for illuminating LEDs in a very diverse, large family of applications. Adjustable high-side current sense with a typical sense voltage of 100 mV allows for tight regulation of the LED current with the highest efficiency possible. Output LED current regulation is based...