MP1584EN DC-DC Buck Converter 3A Adjustable Voltage Regulator

MP1584EN Mini DC-DC Step Down Converter – 4.5–28V to 0.8–20V, 3A

Power your DIY electronics, Arduino projects, RC cars, and automotive builds with precision using the MP1584EN Mini DC-DC Step Down (Buck) Converter. This compact voltage regulator module lets you dial in the exact output voltage your device needs — all in a module smaller than a postage stamp.

Why Choose This Step Down Module?

• Fully Adjustable Output: Set your output voltage anywhere from 0.8V to 20V to match your specific project requirements — no fixed output limitations.
• Wide Input Voltage Range: Accepts 4.5V to 28V input, making it compatible with common battery packs, car power systems, and bench supplies.
• High Current Capacity: Delivers up to 3A peak current (1.8A continuous long-term), ideal for powering microcontrollers, sensors, motors, and LED strips.
• High Conversion Efficiency: Up to 92% efficiency with a 1.5MHz switching frequency keeps heat low and your power budget in check.
• Ultra-Compact Design: At just ~22 × 17mm, this module fits into even the tightest enclosures, chassis, or breadboard builds.
• Low Output Ripple: Only 30mV ripple (unloaded) ensures stable, clean power for sensitive electronics.
• Durable Construction: Built with quality plastic and metal components for reliable, long-lasting performance.

Technical Specifications

Perfect For

• Arduino, Raspberry Pi & microcontroller power supplies
• DIY car and automotive 12V/24V voltage regulation
• RC vehicles and hobby electronics
• LED driver circuits
• Portable battery-powered devices
• Any project requiring a reliable buck/step-down regulator

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For more information on electronics safety standards relevant to low-voltage modules, visit the U.S. Consumer Product Safety Commission (CPSC).

Learn more: Voltage regulator

Frequently Asked Questions

Q: What is the MP1584EN DC-DC step down converter used for?

A: The MP1584EN step down (buck) converter is used to reduce a higher DC input voltage (4.5–28V) to a lower, adjustable output voltage (0.8–20V). It's commonly used in DIY electronics, Arduino and Raspberry Pi projects, automotive systems, RC cars, and LED driver circuits where a stable, lower voltage is needed from a higher-voltage power source.

Q: How do I adjust the output voltage on this module?

A: The output voltage is adjusted by turning the small onboard potentiometer (trimmer screw) with a small flat-head screwdriver. Always use a multimeter to measure the output voltage while adjusting, and ensure your input voltage is always higher than your desired output voltage before connecting any load.

Q: What is the maximum continuous current this MP1584EN module can supply?

A: The module can supply a peak current of 3A, but for safe, continuous long-term operation it is recommended to keep the load at or below 1.8A. Running at the peak 3A rating for extended periods without additional heatsinking may reduce the module's lifespan.

Q: Can I use this module in a car or automotive application?

A: Yes! This module is well-suited for automotive and DIY car applications. A standard 12V car battery falls well within the 4.5–28V input range, allowing you to step down to 5V for USB-powered devices, microcontrollers, or sensors. Just ensure proper insulation and secure mounting in your vehicle installation.