zpike,
at these current and voltage levels you may want to consider the ADP197.
Connecting the EN pin high through a pull up resistor (10k, 100k) will keep it on but allow you to turn it off by shorting the EN to GND.
www.analog.com/ADP197
Other parts…
I'm looking for a load switch capable to switch loads up to 1.25A continuous and 2.5A pulsed for 0.5 seconds.
The device is also used as inrush current limiter.
Recently, I ordered an evaluation board for the ADP197 load switch (6-Ball WLCSP package…
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