SparkFun Buck Regulator Breakout - 1.8V (AP3429A)
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Provide a 1.8-volt rail from a suitable supply with this AP3429A buck breakout. The board includes an enable input, screw terminals and additional connection footprints for different assembly arrangements. Its rear copper pad offers a heat-sink attachment area, while the actual available output depends on load, input and thermal conditions.
Before you buy
Review board input, current, cooling and startup requirements before powering a circuit.
SparkFun SKU: COM-21338 · Category: DC-DC power regulators
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Official product specifications and documentation
EAR summary based on supplier documentation; this is not a hands-on review. Product identity rechecked during the October 25, 2026 sprint. SparkFun Originals eligibility was verified with the supplier’s Original: Yes filter on 2026-10-25. Affiliate eligibility remains subject to SparkFun's program terms.