I'm working on a 5x5x5 LED cube and I plan to use 3mm LEDs at 20mA. Each plane will have a maximum current consumption of 25 x 20 = 500mA so I was planning to use a P-CH MOSFET to control the layers. I've found these are quite cheap IRFR9024, but they are not logic-level. the plan is to have it powered from a 5V USB wall plug capable of 500mA (should I bump it up to 1A, just to stay on the safe side?).
I've decided to use FETs to learn something about those semi, but I wonder how can I drive them having a 5V input. By reading the datasheet and if I'm not misinterpreting it, I should be able to drive the FET with 4V enabling a little more than 1A with such Vgs or about 2A with 5V (figure 1 in the datasheet).
Am I misinterpreting the datasheet? Do I need a BJT to drive the FET so to avoid the gate resistor and relative gate voltage drop?
As usual, thanks for your patience and time! ;)