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All   >>  LED Lighting   >>   Automotive Lighting Applications   >>   Questions
 

I have an LED that has a Fv of 3.3v and up to 1000ma drive requirement. My drive source is a PWM signal at 12vdc up to the 1000ma max. What can I use to limit the drive voltage to the LED while still getting the current I need? I have used dropping resistors in the past, but these would be very large resistors. Thanks Dave

You can use our NSI50350AS LED Driver, Constant Current Regulator, 350 mA, 50 V and connect three of them parallel with 1 m Ohm resistor in series.

This configuration will limit your LED current to 1 Amp.
Answered by:
ON Semiconductor
2015-02-02 16:14:24.935