Need 2A Buck driver w/dimmer
- Thread starter videoman
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Th232
Flashlight Enthusiast
Probably overkill, but an H6CC from TaskLED? The official specs say min 7V, but the technical page says that it can run as low as 5V, just that the full output of 6.7A isn't guaranteed. Since you're running at way below that full output, it might be ok?
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Thanks, checked that one out, it really is a nice driver but it is more than I wish to spend. I am putting together around 50 lamps ( not flashlights) that will use 4 XP-G's that must run at 1000 ma. each so that I can expect approximately 1300 lumens out.I cannot run them more than 1000ma. as I will have thermal issues that will shut the driver down. I am trying the prototypes with a 3A buck driver and feeding the leds at 1000ma (2S2P) without any issues. At 1250ma, the driver shuts down. I can only fit 4 leds and must have variable dimming and also cost(driver) under 10 dollars. I can add the pot myself if there is a provision for it.I can accept a driver of 1.4A if need b, as each led will see 700ma for a small decrease in brightness, but that is the lowest I'll go.I have read about the Kennan driver fron DX but it's the dimming part that is tricky.Anyone had experience to get 1.4A with a pot on that one?
PCC
Flashlight Enthusiast
The Shark Buck 2A driver from the Sandwich Shoppe can be purchased with the trim pot removed and you can then wire a 20K pot in its place.
Th232
Flashlight Enthusiast
One small note, if you're making these user dimmable just remember that while a linear pot will work, you need a log pot to get a roughly linear change in brightness.
Thank you, I have bought a few from Wayne and they are really good and solid, they are ideal but the price($27) is just over budget especially when I have to make 50 units, It seems that there is a void in 2A buck or boost that have dimming functionality and are really priced in the $10 range. I came across a few posts on the Keenan but not much info in adding a pot to it. Has anyone attempted to do that successfully? If so, I just need the value and where on the board to solder it into.Same with DX's version.
