It has a voltage adjustment and the datasheet lists the adjustment range as 4.75v to 5.5v. The combined line, load and 'set up tolerance', which I assume means the adjustment tolerance, is listed at 2% which is pretty good. I would set the output voltage to 5.1v and give it a try, if it meets the specs as listed I see no reason why it would not work. If you are concerned about the regulation or just want to test it before use on the Pi, use another load and watch the voltage with a multimeter.
Alternatively if you need 12v, you can always start with 12v and use a suitable DC-DC converter module to lower it to 5v for the Pi. They make pretty small, cheap and efficient ones these days which are not expensive.
Power problems? MoPower UPS for the Pi