I want to drive LED boards Digi# 1510-SI-B8R251280WW-ND. Should I connect them end to end or in parallel (either is fine for my layout) and what driver should I use? They are rated for 1120mA and 24V, and I’m confused whether to use a constant current or voltage driver, and also whether I need to double the mA or voltage to run two boards. Thanks for your help.
Hello paul4,
Welcome to the DigiKey TechForum.
I would recommend to use a constant current LED driver.
If you wire them in Series, you would add the voltage. For Parallel circuits, you would add the current.
So for a Series circuit, you can look at 1866-3599-ND, that is a constant 1.12A output, and the voltage range is 32.4~54V, and will adjust as needed for the LED’s 46V requirement.
I was unable to find a match for a parallel circuit, that would require 2.24A current, and 23V.
We would have some that would put out a higher current, but it is best to stay at the test current.
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Thanks David,
You have confirmed what I thought but couldn’t get a definitive direct answer to. YOU ARE THE BEST!!!
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To elaborate on @David_1768’s point, LED strips should generally be driven with constant current unless the strip has integrated resistors to limit current. Your strip does not.
And with respect to constant current drivers, there is risk in connecting LED strips in parallel using constant current drivers because if one of the strips becomes disconnected or fails open for some reason, all of the current will be driven into the remaining strip(s), which could overdrive and destroy those strips. Therefore, it is generally recommended to drive non-current limited LED strips in series rather than parallel.
Well shoot! I already ordered a driver LOL. Thanks though!
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