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TPS3514: Powering /PSON pin before VDD pin

Part Number: TPS3514

Hello E2E support forum, 

i am using TPS3514 on a board. When the board is powered up, /PSON pin is first pulled up to 5V through a 4.7kOhm resistor.  1s later,  VDD pin is powered on to 5V.  

When /PSON is pulled up but before Vdd is up, it seems that /PSON pin has a lower resistance (compared to when Vdd is powered up) and is drawing some current (estimated to be about 0,1mA).   

I am wondering if sequence of voltage is allowed? Will there be potential problems?

Your feedback is much appreciated. Thank you.