Lamp Driver.

[Ramblings]

@scaru

Is there a reason not to just direct drive the XM-L off the 3 volt supply?

Yeah, I want it to be bright enough to light a small room. :)
But I could direct drive it off 3.3V for 2.8A like your diagrams say.
But this would mean CV not CC regulation, which shouldn't be a problem because there whole lamp is a heatsink, but in case the turd hits the blades.

@FlashPilot

Also, if you come across one that claims an output of more than 2.5A @ 4.2V, please post a link here. Id like to have one that outputs 3 - 5A.

This might be cheating:

• 3.0V 3A -link
• 3.3V 3A -link
• 3.7V 3A -link
• 5.0V 10A -link

And the cheat part:

This.

Or this.

@DrJones

Does it really need to be 3V? A switch with a LED usually contains the LED and a resistor suitable for 3V, you could add an additional resistor to make it work with higher voltages, like 4V, then you could use a NANJG105C with custom firmware suitable for electronic switches.

I can't customise Nanjg105c :(
Are there any drivers already out there that you know of?

No, it doesn't really need to be 3V, but do I just subtract the LED's reverse voltage and then add resistance to get the same amount of current as before?

Thanks for all your contributions and suggestions you geniuses.