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Dear all experts,

I am designing a power switch that can switch between VDDA_IN(direct power supply, 1.8V-3.3V) and VBAT(battery power, 1.8V-3.3V).

My problem is that the switch of VBAT cannot completely turn off if VDDA_IN is higher than VBAT (as below picture).

[ATTACH=full]198530[/ATTACH]


Could you please advise me some ideas?


Regards


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