I am bench testing a cree xml2 U2 led. I have the led mounted to a heatsink and being powered by an LM350 (adjustable output) with a 12v lipo source. Using a dvom to monitor the amperage and an oscope probing the power leads going directly to the led. I am seeing 3.30V at 1A.
My concern is, the data sheet says I should be at ~2.92v at 1 amp. Is this normal because the LED is cold? If I left it on, would it start drawing more current?
My concern is, the data sheet says I should be at ~2.92v at 1 amp. Is this normal because the LED is cold? If I left it on, would it start drawing more current?