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Current drawn by ref pin of ZR431 Shunt Regulator IC

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FvM

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It's a standard series, not a shunt regulator. No ref pin involved.
 

izsurk

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I think you are using the wrong datasheet (for a ZR431)
Unbenannt6.PNG
 

betwixt

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Correct- 'ZMR' as in post #1 is a fixed voltage series regulator. I think you are confusing it it with the 'ZR' (=TL431) device which is a shunt regulator.

Brian.
 

betwixt

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Why do you consider 1uA a high current? It is a bipolar device and needs bias current to operate. 1uA seems quite small to me.

Brian.
 

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