Circuit - Constant Current LED Driver - Circuits designed by David A. Johnson, P.E.


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Circuits designed by David Johnson, P.E.

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Last Updated on: Friday, August 29, 2008 02:34 PM

Constant Current / Current Sink LED Circuits

Constant Current LED Driver
Bob Pease from National Semiconductor came up with this circuit and I have used it many times. It maintains a constant current through one or more LEDs. A single resistor controls the desired current.

Click on Drawing Below to view PDF version of Schematic

Constant Current / Current Sink LED Circuits

Master Schematic Category List - David A. Johnson, P.E.