DC-DC Step Down 3A Fixed 5V Power Supply Module MP1584EN
Ultra-small module is great for devices designed to run on USB power. Despite its small size, it is surprisingly powerful. It uses synchronous rectification for higher efficiency and less heat, allowing it to reach current ratings found in much larger regulators. The output voltage is fixed at 5V for accuracy and ease of use.
Note: Do not exceed the input voltage or maximum output current. Avoid back feeding power through the module and do not apply reverse polarity voltage.