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BAT pin? #4

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gavan1 opened this issue Jan 13, 2023 · 2 comments
Open

BAT pin? #4

gavan1 opened this issue Jan 13, 2023 · 2 comments

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@gavan1
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gavan1 commented Jan 13, 2023

I have tested the bat pin… and min voltage to startup is providing 3.7 V… perfect for Lipos… I will be feeding 6V and want to know if the BAT pin will accept the 6V and regulate it?

Should I feed 6V to the BAT pin , 5V pin or 3V pin? Looking to maximize the 6V battery I will be using (2x 3V Coin Cells)

@tipouic
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tipouic commented Jan 13, 2023

With the schematic made available, you have all the info https://github.com/01Space/ESP32-C3-0.42LCD/blob/main/Schematic/ESP32-C3-0.42OED%20Schematic.pdf
bat pin is connected via a diode to the 3.3V regulator so just read its datasheet to know the max accepted.
Be careful, you also have to look at the power requested so as not to burn it...

@gavan1
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gavan1 commented Jan 13, 2023

Schematics are great... but real world testing is better.

I have tested the bat pin… and min voltage to startup is providing 3.7 V

Anything less than 3.7V via the BAT pin did not result in boot.

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