Do LED drivers exist?

lazerman121

Newly Enlightened
Joined
Feb 28, 2015
Messages
12
I am working on a project and need to run 3 Cree XPE2 LEDs independently. I am looking for an adjustable driver between 0-1 Amp. Something with a current adjust pot. Countless hours of looking and Multiple ebay drivers later I am nearly convinced what I am looking for does not exist. I would prefer not to have to use Flashlight round drivers as I need to Have screw holes to mount them.
I have tried these and others similar but they only work in CC mode if the Forward voltage is 13V :(
https://www.ebay.com/itm/DC-Buck-St...e=STRK:MEBIDX:IT&_trksid=p2060353.m2749.l2649

Does anyone know where I could find any good LED drivers. Thanks :D
 

degarb

Flashlight Enthusiast
Joined
Oct 27, 2007
Messages
2,036
Location
Akron, Ohio
I am a big fan of my buckpuck from ledsupply. I like the infinite pot, reasonable current that allows useful runtime. I think the UI is way better for a headlamp or my wrist lights for work. I don't like the round ones. These are water proof and I can mount on side of battery pack, with no protection.

The catch is you need 2 cells. I use 2 protected x 18650 panasonics. Which makes for awesome worklights, camping lights, but not pocket edc lights.

ledsupply.com
 
Last edited:

lazerman121

Newly Enlightened
Joined
Feb 28, 2015
Messages
12
Thanks Man I looked at those multiple times and did not realize they had a pot. Its a bit out of my budget for this project but It may be my only option. I plan to run my 'device I'm building on a wall adapter so Batteries are not an issue.
All that being said If anyone knows of other drivers let me know.
 

degarb

Flashlight Enthusiast
Joined
Oct 27, 2007
Messages
2,036
Location
Akron, Ohio
Led supply has flash sales.

Worth the extra $10 as they met spec for me on lights that make me money. Efficient %90 buck, sane current draw, potted, variable pot.

Most drivers available aren't made by people that understand real long work days by average worker.
 

degarb

Flashlight Enthusiast
Joined
Oct 27, 2007
Messages
2,036
Location
Akron, Ohio
You can buy buckpuck without the variable pot, pinned for it, wired. I like the pot they sell with it better than my own. But I had to glue a bead on end to facilitate turning the thin shaft. Been 2 years, the amazing goop is still holding.


I didn't heat sink mine, but not a bad idea. The 700 doesn't get too hot.
 

lazerman121

Newly Enlightened
Joined
Feb 28, 2015
Messages
12

DIWdiver

Flashlight Enthusiast
Joined
Jan 27, 2010
Messages
2,725
Location
Connecticut, USA
I'd be very surprised if this were true. I'm not familiar with those boards, but I know the LM2596 and it can provide current limit right down to zero output voltage (short circuit). I suspect something is not connected or adjusted properly, or the board is damaged.
 

Illum

Flashaholic
Joined
Apr 29, 2006
Messages
13,053
Location
Central Florida, USA
Luxdrive is.... pricey

check out Meanwell LDD series https://www.mouser.com/new/meanwell/meanwelllddled/
vout 2 VDC to 52 VDC, vin 9 VDC to 56 VDC. PWM dimmable 0-100%,

1000mA, DIP package, $5.
https://www.mouser.com/ProductDetail/MEAN-WELL/LDD-1000H?qs=erfQA2AIGbX6Yk%2F3J0ulyw%3D%3D


I've used their 350mA one with great results outfitting interior lights for the car. $4, https://www.mouser.com/ProductDetai...=sGAEpiMZZMt5PRBMPTWcaTWeSxpmncu0gsl1cpXW3W4=
Beats the pancakes out of Buckpucks, as they max at 30V and tends to get killed by transients, not mention they take up more space and costs $14 a pop
 
Last edited:

lazerman121

Newly Enlightened
Joined
Feb 28, 2015
Messages
12
I'd be very surprised if this were true. I'm not familiar with those boards, but I know the LM2596 and it can provide current limit right down to zero output voltage (short circuit). I suspect something is not connected or adjusted properly, or the board is damaged.

well I bought 4 of each and they all behave the same So it must just be a bad design.

Luxdrive is.... pricey

check out Meanwell LDD series https://www.mouser.com/new/meanwell/meanwelllddled/
vout 2 VDC to 52 VDC, vin 9 VDC to 56 VDC. PWM dimmable 0-100%,

1000mA, DIP package, $5.
https://www.mouser.com/ProductDetail/MEAN-WELL/LDD-1000H?qs=erfQA2AIGbX6Yk%2F3J0ulyw%3D%3D


I've used their 350mA one with great results outfitting interior lights for the car. $4, https://www.mouser.com/ProductDetai...=sGAEpiMZZMt5PRBMPTWcaTWeSxpmncu0gsl1cpXW3W4=
Beats the pancakes out of Buckpucks, as they max at 30V and tends to get killed by transients, not mention they take up more space and costs $14 a pop

Thanks Glad I had not yet ordered one. Though Pot controlled dimming is really nice.

Thanks for all the help one problem down . 1 to go If anyone saw my other thread D:
 
Last edited:
Top