I have have a simple circuit that I want to drive with a raspberry pi GPIO pin and I want to use a MOSFET to control the circuit. My circuit will be using about 3-5v and 2-3a.
I'm planning on using a IRLB3034PBF. Or maybe an IRF510 since that is available in a physical store at RadioShack.
From what I've read and tried to understand from the datasheets, my 3-5v and 2-3a should be well below the limit of either... But can I drive it with a raspberry pi or arduino?? And am I correct in my reading of the datasheets?
Also, in a lot of diagrams I've seen for this type of circuit online, there is a resistor from the Gate to the GPIO pin. Why is that?
Edit: From what I can tell on the datasheets, Vgs is only limited to +-20V for either. How can one tell that the IRF510 would be a bad fit? Is it because the max Gate Threshold Voltage is 4V which is greater than 3V3?
Thank you for all of your help everyone! I'm a software guy so this low level circuit stuff is still new to me.