Yes, will work great. Wire it just like you would for a 5 volt
mod but only 1 battery. The little schematic on the product listing works great and you don't really need the capacitors. There's also a link down at the bottom of the product page to the spec sheet that has the pinouts of the chip but pretty much it's Vin, Vout, gnf, control.
Control pin has to be grounded via resistor so it doesn't float and cause unpredictable output. Just apply Vin from your switch to the control pin to turn it on. The resistor is in place so when you do hit the switch there's no direct short to ground.
hoog