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TPS22916: Reverse Current Blocking

Part Number: TPS22916

Tool/software:

Hi support team,
I have a question about reverse current blocking in the TPS22916CNYFPR.

The IRCB threshold is -500mA, but does that mean that reverse currents of less than 500mA will occur?

Also, I think the above conditions apply when the ON pin and VIN pin are 1V or higher.
If the VIN pin is less than 1V or the ON pin is 0.35V or less, under what conditions will the RCB be activated?

Is there a reverse current threshold?
Or does reverse current not occur at all?

Regards,
Dice-K