Available with a lead time
Expect dispatch between Nov 28 and Dec 02
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The SparkFun 3.3V Buck Regulator Breakout features the AP3429A from Diodes Inc., a 2A step-down DC-DC converter with an input voltage range of 2.7V to 5.5V. This full-size, 1in. x 1in. version of our buck regulator boards is configured to provide a regulated 3.3V output (from a 3.9 to 5.5V input voltage range), which is controlled by an EN
(enable) pin. To dissipate excess heat, a 0.6in. x 0.5in. copper pad is provided to attach a heat sink to the bottom of the board.
As a full-size buck regulator breakout, additional options for connecting input and output power are available. 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. This board has four mounting holes compatible with 4-40 hardware.
Get Started with the SparkFun AP3429A Buck Regulator GuideBuck Board:
VIN
- Power In (3.9V to 5.5V)GND
- Common GroundVOUT
- Power Out (Regulated 3.3V)EN
- Enable (Pull high to enable the power output)AP3429A:
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