I am building my first p60 drop-in. (actually I am planning to use only the pill for my Dereelight dbs).
I wanted to drive a XM-l at about 3A with 2x li-ion batteries. But the problem is I can’t find any buck drivers that fit the requirements I need.
The only driver that i can find that can supply 2.8A are linear regulator drivers and they use 1x li-ion battery (Is it actually safe to use 1 battery with that much power consumption?)
Does anyone know a driver that fit this bill? Or maybe does someone know what driver Dereelight uses? (because they apparently have the driver I need :p)
So the driver needs to:
have an output of around 2.8A
less then 17mm in diameter
support a voltage around 5,5 to 8.5
for a 17mm 2+ cell driver that could output 3A. I spent an exorbitantly long time looking for one and can say with 100% certainty it just does not exist as an off-the-shelf component fit for use by flashlight hobbyists.
2.8A is fine from a quality 18650 cell.
Here’s a common 2.8A linear regulator suitable for 1*18650 and 1*XM-L: link to driver at FastTech
This one measure according to Lck-led 18mm. It could probably stand filing off 1mm. I have never used this driver so I can not comment on how well it works or even if it will work in a P60 pill. It might be worth a try.
I have seen many drivers who are like 20mm in diameter who should get the job done.
Had anyone ever tried to put these components onto a smaller pcb board?
But then you still have the problem of the boards height.
Dereelight does make their own drivers. In fact, they’re the only guys I know of that have an AX2003-based driver with an Attiny13.
I managed to get them to sell me a couple of drivers separately a couple of years ago, so you might want to drop them an email to ask if they’ll still do the same.
