AnsweredAssumed Answered

Input Power Rail detection circuit

Question asked by DavidZ on Mar 31, 2014
Latest reply on Mar 31, 2014 by LucaV

I have the circuit as in attached image.


It will auto detect the input power rail VPWR ( 12V or 5V ).


If the input power rail is 12V, the VPWR_SEL will be “high” otherwise VPWR_SEL will be low.


My co-worker keep bothering me for long time for this circuit.


Do you thank it will work properly as what I want ?


Very appreciate for your suggestions.


AD8541 Circuit.png