So I’m trying to run a 3.7V motor off of a mosfet, and it works perfectly fine when I provide a 3.7V PWM signal to the gate of a FQP30N06L.
However, when I swap out that mosfet for the RFP30N06LE, it does not work. It did work when I provided it 9V however. I don’t understand why this is the case, I have compared the two data sheets and they are nearly identical, yet the LE does not seem to be even reaching its threshold voltage at 3.7V.
I have tried connecting the gate directly to a 3.7V rail instead of PWM pin but to no effect. I have 220 ohm resistors on the gate and I have tried with and without a 10k pulldown resistor, still nothing. Any ideas?