ESP32-WROOM-32D Minimum Voltage

mattia.delloca
Posts: 1
Joined: Wed Sep 11, 2019 6:47 am

ESP32-WROOM-32D Minimum Voltage

Postby mattia.delloca » Wed Sep 11, 2019 6:58 am

Dear All,

I'm pretty new with ESP32 design.
I'm using a ESP32-WROOM-32D and I'd like to know which is the minimum supply voltage.
The new datasheet (version 2.9) indicates a range between 3,0 and 3,6 Volt while an older version indicater a lower minimum voltage
(range from 2,7 and 3,6 Volt).
Can you tell me why has the range been restricted?

I need to use a system supplied by a battery and for me this information would be very important.

Best Regards,

Mattia

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krzychb
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Joined: Sat Oct 01, 2016 9:05 am
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Re: ESP32-WROOM-32D Minimum Voltage

Postby krzychb » Wed Sep 11, 2019 2:54 pm

Hi Mattia,

This is related to current drawn by SPI flash on board of ESP32-WROOM-32D and voltage drop on internal series resistance. For description please see PCN-02-20190815, point 1 under "Reason for Change" as well as "Impact of Change", points 1 and 2.

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