SparkFun Buck Regulator Breakout - 5V (AP63357)

The SparkFun 5V Buck Regulator Breakout features the AP63357 from Diodes Inc. a 3.5A synchronous buck converter with a wide input voltage range of 3.8V to 32V. The fully integrated 74mΩ high-side power MOSFET/40mΩ low-side power MOSFET provides a high-efficiency step-down DC/DC conversion. This full-size 1in. x 1in. version of our buck regulator boards is configured to provide a regulated 5V output (from a 6 to 32V input voltage range) and features a high-voltage EN (enable) control pin that is rated up to 32V. On the back of the board a small copper pad is available to dissipate excess heat with a heat sink. As a full-size buck regulator breakout additional options for connecting input and output power. There is a pre-assembled screw terminal for a non-permanent connection the option to solder on a barrel jack for an external power supply and five PTH pins to create a more permanent installation. Our full-size buck regulators also come with a red power indication LED that light up when the power output is enabled and two mounting holes compatible with 4-40 hardware. Check out our BabyBuck regulators and the SparkFun BabyBuck Regulator Breakout - 5V (AP63357) for the smaller minimalistic versions of our buck regulators. Note: While the AP63357 is rated up to a 3.5A output users should expect a 3A maximum with our boards due to thermal constraints. The boards can output 3.5A but would require a sufficient amount of active cooling.