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TPS2553: Overvoltage protection doesn't work

Part Number: TPS2553

Hi there,

we've used the TPS2553DRV in at least two designs that I've tested now.  Applying 5.5V to the output pin while the device is enabled doesn't cause the device to turn off or pull the FAULT# pin low.  Instead I can happily feed the overvoltage back up through our power tree.

I'm testing this in circuit by using a jumper wire from EN to 3V3 and then applying a voltage of 5V5+ on the output.

Thanks.