lux3 drive current

DrifT3R · Dec 12, 2006

Hello everyone,
I am thinking about modifying a flashlight with a luxeon 3 emitter. What current should i drive it at if i plan to use 2 rechargable cr123a cells. (8.4v) and also, what bin code should i be buying?

jonlerd · Dec 12, 2006

yeah i too would like to learn more about the bin rating of these lux leds

chevrofreak · Dec 12, 2006

Luxeon III's are binned at a current of 700mA. The lower the voltage bin and the higher the flux bin the more efficient the LED will be. If you use a circuit that will run at constant current then you will actually get more runtime the lower your forward voltage is.

In a code like UX0J the U is the flux bin (lumens), the X0 is the tint of the white light it puts out, and J is the voltage the LED needed to be fed in order to reach the 700mA of current that it was binned at.

see here http://home.comcast.net/~theledguy/bin_codes/index.htm

DrifT3R · Dec 12, 2006

which converter board should I be using then. Does the downboy reduce the voltage as well?

Meduza · Dec 12, 2006

The downboy or another buck converter is what you should be using.

lux3 drive current

DrifT3R

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chevrofreak

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