I'm looking to make some "spooky" LED attachments to the kids' Halloween costumes, and I'm wondering about good choices for a small switching regulator to supply a few 10s of mA at around 3.3V from a 9V battery. Any recommendations?
Yeah, I could use a pair of AAAs, but I wouldn't mind playing around with some small high-efficiency regulators just for the heck of it.
Mike