Hi all, i am using a STM32 Nucleo-144 developement board with the STM32F429ZI MCU and i am powering it with a 5V Battery. In the Datasheet it says that Pin7 is a 3.3V output. Can i use this Pin to power a Sensor?

[SMint.2]

I am referring to this datasheet (page 52) : https://www.st.com/resource/en/user...ucleo144-boards-mb1137-stmicroelectronics.pdf

[Javier1]

That pin seems like the one connected to the NUCLEO board 3v3 regulator´s output.

How much current requires your sensor?

The nucleo regulator seems to be LD39050PU33R with a max current output of 500ma

[SMint.2]

According to the datasheet it needs 30 mA

[Javier1]

Go for it

[SMint.2]

Cheers for the quick response and the meme :face_with_tears_of_joy: