Widest voltage?

[Buck91]

Did malkoff ever make a drop in that can run off AA, CR123 and 18xxx? Basically a boost/buck type setup. I know the newer M91s can run off surprisingly low voltage but I think they still require somewhere north of 2v input to fire up.

 

[thermal guy]

An M30 will run off of 1-2 AA 1 123 or or a single 3.7. But not past 5 volts. I think the M91 is the best with something like 2.5-12 volts.

 

[archimedes]

The M30 series were fantastic, for that very reason