Hi everyone,

I have a basic electronic question.I am controlling the dc brushed motor which has a stall current 8.2A at 6v battery Ni-mH. I chose IRL3803 Mosfet where the gate from Arduino UNO(5V).

My question: 1.How much current rate from IRL3803 at 4.5v or 10V have? 2. whats difference between choosing 1 MOSFET or paralleling 3 Mosfet? 3. I have calculated the power dissipation. whether my calculation is correct?

P= I^2*R_(DS(on)) where resistance drain to source at 4.5v is 0.009 ohm P=0.6watts

Thanks in advance