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TPS62260: Behavior when not supplied but powered on the output

Expert 4620 points
Part Number: TPS62260

Dear Support,

My customer intend to use our buck with a 3.3V applied on Vout, while it's not powered on the input.

In such a case, when an external voltage is applied on the output, it will duplicate the 3.3V to the input, right?

Are there some limitations or damages that could occur on our buck?

Regards,