[Rickertsen2]

Originally Posted by dddriveman

we are using it to power a small motor connected to a 5v output. I am not sure what the impedance is.

your still holding out on us here. We need more info. What will the input to this circuit be? What power is available? How big is this motor? Elaborate a bit more on this 5v output. We would be glad to help but we need to know what it is we are helping with.