Can you recommend me any?
Possibly efficient with no blinkies, but having such narrow range I’ll probably take best found.
Is Lexel making any within this range of Voltage?
What diameter do you need? Are you using it with a 3V LED? What kind of amps are you looking to get?
Hum, Jaxman has a 3 mode driver (17mm) on their Jaxman E3. It is more suited for AAs than 14500s but it worked well (I modded a light with that driver and gave it to a friend of mine).
It had a good Moonlight then Low and Medium (no memory). The light I got had a Nichia Led and while I had and used it it didn’t gave me any trouble.
I am not sure if he sells it, but you may try!
Yeah, 3V LED. Whatever reasonable Amps, say 0.7 - 1.5. More if temp. Sensor.
What size driver are you looking for, 17mm?
17mm best. But will accept 16 or 15 too.
http://kaidomain.com/S024883-17mm-0_9V-3_6V-3-Mode-Boost-Driver-Circuit-Board?search=boost%20driver
These look to be based around the PAM2803. I can’t say for sure, the pic isn’t clear enough. But it does appear to have a 6 pin IC just like the PAM2803.
The PAM2803 is used in alot of AA/Nimh/Li-ion drivers. Wight made a few here on BLF as well.
If you can verify that they use the PAM2803 then they should be good. The sense resistor can also be changed to change current more so in the upper range.
The V11R, V10R, RRT-01, TCR-1 and a few others use this IC for their boost control. You can check out my link in my signature for info.
Lots of options with this IC (PAM2803).
.
These two in the pic have a PAM2803 https://www.fasttech.com/products/0/10001750/1127402-12-aaaaa-1-mode-800ma-linear-booster-led-flashligh
https://www.fasttech.com/products/0/10001750/1127407-12-aaaaa-5-mode-800ma-linear-booster-led-flashligh
Do you think 3.6V declaration can withstand 4.2V? I don’t really feel like modding the driver.
Yes, it runs direct drive with any voltage above the led vf. But it’s limited by the other three components in the leds current path.
More details in my sig link. It will not require modding the way it is but it can be improved or more or less current output by modding.
The boost part of circuit, will not gain much from modding. It becomes slightly more efficient but the gains are small compared to the gains on the upper end.
Interesting. I think I have somewhere at least one of these drivers.