Low voltage shunt regulator

t about

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by MOSFET or whatever for some micro second. When stable sample the voltage onto a capacitor and turn the pulse off. Wait a looooong time and do it ag ain. The average current is whatever the sample circuit dictates

as DC.

on the reference is sampled by a storage capacitor which holds the referen ce voltage between samples. The source is then turned off and the current i s 0. (except for the 4-5uA for the opamp.

e S/H and how long hold time/period you define

e current consumption, so one would need to reduce the current of the S/H a s much as possible and/or optimize the droop of the sampled voltage, so tha t the entire cycle period is long.

Why? There's an opamp to isolate the Ref load from the sample capacitor...

Regards

Klaus