I am using this mosfet http://www.nxp.com/documents/data_sheet/BUK9507-30B.pdf
I want to use it power a small brushed motor 3.7V. I am using caps and protection diode, dont worry.
I know how to use this mosfet, I am not making any stupid problem. My question is this: I am using 5v in the gate pin of the MOSFET (cause my arduino is 5V) but on the drain/source I am using an external battery with 3.7 V. I connected the GND of the battery to the arduino together, so no stupid thing here.
I want to know this: can I contol this MOSFET using a higher voltage on the GATE? I ask this cause when I apply digitalWrite(3,10) or digitalWrite(3,255) the motor is spinning in the same very fast speed. It should spin much lower at 10 than 255 PWM.