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Associate
April 6, 2024
Solved

STM32L073RZ 5V pin current limit

 

I was wondering what the maximum current limit is for the 5V output pin. I looked at the datasheets but couldn't figure it out.

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AScha.3
AScha.3Best answer
Super User
April 6, 2024

This depends on your setting , on JP5 : (here jp2, MB1364)

AScha3_0-1712423030076.png

So, as you set it, from USB->St-link , about 100mA (because from USB, and st-link also needs current).

Up to 800mA , if you supply it by the VIN (external in) .

See circuit : on STM , for your board -> CAD resources , you will find it.

If you feel a post has answered your question, please click on " Best Answer ".

2 replies

AScha.3
AScha.3Best answer
Super User
April 6, 2024

This depends on your setting , on JP5 : (here jp2, MB1364)

AScha3_0-1712423030076.png

So, as you set it, from USB->St-link , about 100mA (because from USB, and st-link also needs current).

Up to 800mA , if you supply it by the VIN (external in) .

See circuit : on STM , for your board -> CAD resources , you will find it.

If you feel a post has answered your question, please click on " Best Answer ".
Josh636Author
Associate
April 6, 2024

Thank you!