Careful, there are a lot of dodgy USB "chargers" out there these days. Typically they'll have poor regulation that might be ok for most phone's charging circuits, but not so good for powering ics directly.
Careful, there are a lot of dodgy USB "chargers" out there these days. Typically they'll have poor regulation that might be ok for most phone's charging circuits, but not so good for powering ics directly.