Designing a 2A linear or Buck driver - advice wanted

Mattaus

Flashlight Enthusiast
Joined
Mar 29, 2011
Messages
1,765
Location
Brisbane, Australia
Hi all,

I'm experimenting with a custom LED driver and am looking for at most 2A output to a single XP class emitter from a single 18650 (or similar) cell.

Normally I'd just design a board using 7135 chips however space is a little limited so I'm considering using a single voltage regulator hooked up to act as a constant current regulator. I want to control it via PWM. Can anyone with some better electronics chops than I recommend a suitable regulator to use?

I have an instructables link somewhere that tells me how to set up such a circuit but beats me if I can find it now that I want it Lol.

Anyway, any advice would be awesome.

Thanks,

- Matt

Edit: my title mentions buck drivers. That's a typo but I can't edit the title from my phone. Cheers.
 
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