alexmg2:
I am asking because I had some issued with it being simply connected to Arduino's digital pin, when arduino was outputting HIGH regulator was enabled, but then I set Arduino's pin LOW regulator did not shut down until I added pulldown resistor. But now I am not quite sure that this is how it supposed to be done properly.
The #SHDN pin takes a few microamps to hold it low, the Arduino output being LOW is guaranteed to cope with
that if the pin was set as an OUTPUT.