Waveshare ESP32 S3 voltage range for power?

Support Product Questions
1

I’m working on a project with a friend, using the Waveshare ESP32-S3 Pico board.
The description mentions it has a “High efficiency DC-DC buck-boost chip”, but I can’t actually find the allowed voltages to use to power it.

Some other ESP32 boards have allowed voltages as high as 8-9V, or as low as 3.5V. I was hoping this Waveshare board was the same, but now I’m not sure.

Can anyone confirm the accepted voltage range for powering it?

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2

Welcome to the forum Toby!

From the data sheet for the regulator it quotes a 5.5V max, which is the same as the Pico.

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3

Thanks for the quick response!
A pity it doesn’t go higher, but it’s OK.

Do you know the lower end of the range?

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4

Hi @Toby469,

Looking at the datasheet for the MP28164 power IC it looks like the VSYS for the board is 1.2V to 5.5V Input Work Range with a startup voltage of 1.8V. I’d recommend looking through yourself to see what the limitations of this chip are though.

Found this chip on the Schematic for the ESP32-S3-Pico.

Hope this helps with your project.

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