SparkFun Buck Regulator Breakout - 1.8V (AP3429A)

The SparkFun 1.8V Buck Regulator Breakout is a versatile and compact device, featuring the powerful AP3429A from Diodes Inc. This 2A step-down DC-DC converter operates within an input voltage range of 2.7V to 5.5V. The 2.54cm x 2.54cm version of Sparkfun's buck regulator boards is designed to deliver a regulated 1.8V output, controlled by an EN (enable) pin. The board includes a 1.52cm x 1.27cm copper pad for attaching a heat sink, ensuring efficient dissipation of excess heat.

The Buck Regulator Breakout offers several connection options for input and output power. It comes with a pre-assembled screw terminal for temporary connections, the option to solder on a barrel jack for an external power supply, and five PTH pins for a more permanent setup. A red LED indicator lights up when the power output is enabled. The board also includes four mounting holes, compatible with 4-40 hardware, for easy installation.

The Sparkfun Buck Regulator Breakout is not just about power regulation, it's about flexibility and adaptability. It gives you the ability to choose how you want to connect your power sources, making it a perfect fit for a variety of projects. Whether you're working on a temporary prototype or a permanent installation, this board has you covered.

The AP3429A chip on board offers a wide range of features. It can handle an input voltage from 2.7V to 5.5V and produce an output voltage from 0.6V up to the input voltage. It provides a continuous output current of 2A and operates at a switching frequency of 1MHz. The chip also incorporates protection circuitry, including undervoltage lockout (UVLO), input overvoltage protection, overcurrent protection with cycle-by-cycle peak current limit, and thermal shutdown at 160°C.

With these features and capabilities, the Sparkfun 1.8V Buck Regulator Breakout is a reliable and versatile tool for your power regulation needs. It's ideal for a wide range of applications, from simple DIY projects to complex electronic systems. With Sparkfun, you get quality, performance, and value in one package.