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ADM1085 Leakage/Pulse when Initial Stage

Question asked by henry-tang on Aug 3, 2018
Latest reply on Aug 3, 2018 by hopal

Hi ADI Expert,


Is normal to see pulse / leakage at ADM1085's ENOUT ?

Due to ENOUT is open-drain and this pin is puled high to Vcc.

So before ADM1085 finish initial setting, ENOUT will rise with Vcc.


I also found a describtion in AN-1080 :

"In a system where a brief pulse of the first supply, during initial power-up, does not cause any problems, it is recommend to use VIN only for the circuit supply."