'voltage regulator for -40deg C'
Having selected Industrial spec PICs for a high altitude avionics project,
I'm now trying to source a reasonably priced -40deg 78L05 or equivalent
regulator. But so far without success.
Will the 0-85 deg spec ones operate satisfactorily at low temps, or should I
use a zener setup?
Many thanks for any suggestions
Stuart Meier wrote:
> I'm now trying to source a reasonably priced -40deg 78L05 or
> equivalent regulator. But so far without success.
> Will the 0-85 deg spec ones operate satisfactorily at low temps, or
> should I use a zener setup?
What makes you think you'll find a -40¡ rated Zener when you can't
find such a regulator?
I *suspect* the ordinary ones might do (after all, if there are
ordinary and low temp parts, they're generally all from the same
manufacture, just tested and *characterised* for the extended range).
IOW, the specs may not be guaranteed, but it'll probably work close
enough. (Disclaimer: Not a chip expert!)
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