Russell McMahon wrote:
> Schottky based on needed current and voltage. I have some that may
> suit. Doesn't HAVE to be Schottky - just helps efficiency.

Yes, schottky is the clear choice at this voltage and considering a few 10s
of mA reverse leakage wouldn't cause any trouble here.  However, there is
one more good reason for using a schottky diode.  It has essentially
infinitely fast reverse recovery.  That can be a big issue with silicon
diodes that take several amps.  The fast recovery leaves you the option of
running in continuous mode, or at least not having to make really sure the
circuit can't ever operate in continuous mode.


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