ESP32 Forum

I'm using an ESP32S3 with an Adafruit INA260 voltage/current sensor. I'm powering the ESP32 with 5V from an L7805CV linear voltage regulator (including the necessary filtering capacitors). The INA260 can be powered with either 5V or 3.3V. Would it be preferrable to power the INA260 with the 3.3V output pin of the ESP32 versus connecting both devices to the 5V output of the L7805CV? Does using the ESP32's 3.3V internal voltage regulator place unnecessary stress on the ESP32? Pro/cons of each method?

you would be better off using 3.3v for the INA260. The INA260 draws hardly any current to operate so there is no concern to put any stress on the onboard 3.3v regulator. Also, since your going to communicate with it via I2C and the ESP32 pins are only 3.3v tolerant it would be best to use 3.3v as the supply.

Thank you Mike...I appreciate your help.