Friday 26 May 2017

microcontroller - P CHANNEL MOSFET gate directly GPIO


I'm currently using this circuit to control my load from MCU logic HIGH


It works great, after self reflexion why just not do like this ?


What is the difference from the first circuit ? It's safe for my MCU ? I use NDP6020P is a Vgs(th) max -1V my VCC is 3.7V.


I know in the last circuit when MCU is LOW my load is "ON" instead the first circuit "LOW" = "OFF"


Regards




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