> I'm looking for a single chip voltage regulator capable of 
> supplying -60V
> from a -75V supply. The minimum output current can be anything above 
> 150mA.
> I suppose I'm looking for something like the TL782 voltage regulator 
> which
> regulates up to about +125 V with the output being set by two 
> resistors. I
> would prefer not to build from discretes, but might have to go that 
> way.

Almost any negative 3 terminal regulator able to tolerate 15 
differential in operation could probably be used. Car that it didn't 
get overstressed during startup/shutdown or with large load or input 
transients may be required.

The olllllllllllllllllld LM723 would almost certainly be up to this 
(it's the universal voltage regulator from when there were so few that 
a universal one was needed :-) ).
If you can't do it (whatever it is) with a 723 you're asking the wrong 
question :-)


        Russell



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