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TPS54340 the spec of discharge FET

Other Parts Discussed in Thread: TPS54340

Dear Specialists

My customer is considering about TPS54340.

He has a question for shutdown.
Could you please advise.

According to Block diagram of the datasheet, FET is connected from SW pin to IC GND.
I think that FET is on for output discharge, when UVLO is on.

Could you please let me know the condition of FET is on.

Thank you for your great help.

Best regards,