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LP5912: Pre-bias start up

Genius 4660 points
Part Number: LP5912

Please let us know Pre-bias start up about LP5912.

Our customer is using LP5912-3.0DRVT @VIn:3.3V.

Some times LP5912-3.0DRVT couldn't start up in Pre-bias(1.7V is seen at Vout when EN is off) condition.

If they make EN delay term from VIN, LP5912-3.0DRVT could start up.

1.Please let us know why LP5912-3.0DRVT couldn't start up in Pre-bias condition.

2.And please let us know what kind of protection is work in this condition.

3.Please let us know release condition from this protection.    EN OFF->ON ?

 

Regards,