I'd like to use a N FET as a low side switch to switch < 20mA from a battery(coin cell, actually, so around the 3V mark). The switching voltage will only be around 1.6V, which is why I ask the question, as I am no expert on this analogue stuff.
I realize that a high side switch is often preferred, but that, I believe, would require another transistor, and I'd like to keep component count and cost to the bare minimum, i.e. one FET one resistor.
Any help appreciated.