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TPS54618: Can I use another voltage rail on EN pin for power sequencing?

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Part Number:TPS54618

Dear expert,

Can I use another voltage rail on EN pin for power sequencing? I want to enable TPS54618 once another 1.8V rail is ready. I use an RC circuit for EN pin like below.

However, I notice that EN pin has an internal pull up current source, which may finally cause 1.9uA reverse current into my 1.8V rail. Will this be a problem? Maybe I can only use open drain output to EN pin?


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