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TPS1663: The FLT is not to Low when P_IN goes to Low sometimes

ACGUY
Guru 11170 points
Part Number: TPS1663

Hello E2E,

Our customer is using the TPS16630 for masspuroduction. There are some devices in which FLT does not go low.

P_IN and IN are connected directry.
When the input voltage drops, the device should shut down and FLT should go low.
However, there are some devices that occasionally shut down while FLT remains high.

Is this a quality bug?

Best regards,
ACGUY