ESP32S3-DEVKIT1-C-N8R2 3.3v power

proj964
Posts: 1
Joined: Thu Oct 10, 2024 2:55 pm

ESP32S3-DEVKIT1-C-N8R2 3.3v power

Postby proj964 » Thu Oct 10, 2024 4:08 pm

I have looked a lot around the web and cannot find an answer to this question.
How much power is available at the 3.3v pin for driving attached devices,
Like LCD, relay etc given 5v is applied to the 5v pin?

ESP_Sprite
Posts: 9757
Joined: Thu Nov 26, 2015 4:08 am

Re: ESP32S3-DEVKIT1-C-N8R2 3.3v power

Postby ESP_Sprite » Sat Oct 12, 2024 3:05 am

The schematic says the LDO on that devboard is a SGM2212-3.3XKC3G/TR and the datasheet for that part says it can provide 800mA. The datasheet for the ESP32-S3 says you want to have at least 500mA reserved for that chip, leaving 300mA for anything else you want to feed from the 3.3V rail.

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