Well, just took a lil' peek and found this: Semtech SC1592 Low-Dropout High-Performance Adjustable Positive-Voltage Regulator
Not an expert on these matters, but seemed like a nice choice for a new generation of better featured compact linear drivers with adjustable current output.
Well, just in case some of you are interested in going beyond the 7135s.
P.S.: Semtech SC1592 datasheet.
4S XHP35 LDO?
Good find Barkuti, thanks for posting. i found the datasheet but not sure how to add it here.
Well, the SC1592 (datasheet link in opening post) has features, voltage range and performance for interesting multi-cell designs, with an understandably lil big package.
Then there's the tiny SC4212B (MLPD-8, 3×3mm, datasheet), which would make powerful small drivers with just ≈3 pieces. Since they're completely adjustable, having n pieces onboard for n/2 amps current output would mean extremely low dropout for single li-ion operation, additionally improving regulation time.
Mmm, of course, I believe our fellow microcontroller software developers will need to switch some gears for these, as I believe good variable current output control can be achieved without disgusting PWM (unadvisable for a chip which needs 250μs for a soft-start).
Cheers my dears
Interesting although sadly the only real feature it offers is thermal shutdown if it overheats. All the extra components and the large size means you could build a similar circuit for about the same space manually like in the texas commander.
Also for some reason it needs 2 separate input’s at different voltages? I am not sure how you would do that easily in a flashlight.
Too bad it could not be setup simply like the 7135 with just 3 pins and a package just big enough to deal with the heat.