Hi, I'm looking to create a battery powered application that drives a motor. Only one motor, only one control, like this:
But mine is different. The whole application runs on a Li-Ion battery, so I only have 3.3V for the microcontroller. So my max Vgs is 3.3 V. Similarly, my motor will be fed by 3.3 V. The motor will draw around 300 mA. So to not have too much of a voltage drop on the MOSFET, I'd like the Rds to be sub-ohm with a Vgs of 3.3 V while passing 300 mA. I've tested almost a dozen transistors whose datasheet looks promising, but I always see a Vds of 0.6 - 1V, which kills the performance of the motor.
Are there any MOSFETs that have a very low (ideally ~100 mOhm) Rds with a Vgs of 3.3 and with an Id of 300 mA?
Thanks.