Esp32 boot up at 1.85V before scaling PMIC

[colinives]

Hi there,

I’d live to use a PMIC on a new wearable product. The default boot up voltage is 1.85V thereafter the first code can scale it smoothly to 3.3V before it does anything else.

Looking at the data sheets it seems that the esp32 can run off 1.8V -without doing any flash\OTP actions.

If the first thing we do is to scale the supply from the 1.85V to 3.3V - is this a valid approach?

Thank you