Description:A tiny 3.3v voltage regulator
Supply up to 12v DC, and out comes 3.3v. The voltage regulator chip onboard is the AMS1117. Specs show that the maximum supported input is 15v, and a maximum of 1500ma! The regular operating milliamp supply is rated for 1A.
Here is a link out to the spec sheet.
This is a great addition to a project if you need to run all or a part of your circuit at 3.3v, with enough current to keep you smiling.