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Powering ST LSM303AGR from MCU IO Pin
Markel reacted to NicholasLindan for a topic
I've done this on products - powered an analog section off an I/O pin. It is the cheapest power control method - heck it's free and it takes no power to implement. If you need more current you can parallel two or more pins. There is no problem with parallel MOSFETs, they will current share as rdson increases with temperature.1 point -
You need to read the data-sheets of the MCU and the sensor and check the mA provided and used.1 point