Mini MP1584 DC-DC 3 A Adjustable Buck Module

The Mini MP1584 DC-DC 3 A Adjustable Buck Module is a high-efficiency step-down power regulator designed for compact, space-constrained projects. Built around the MP1584 switching regulator IC, it delivers a stable, adjustable DC output with excellent thermal performance and conversion efficiency up to 92 %, making it ideal for powering Arduino, Raspberry Pi, ESP32, LED lighting, and portable electronics.

Despite its small footprint, this module provides reliable 3 A continuous current (4 A peak with adequate cooling) and includes multiple protection features to ensure safe operation in a variety of DIY, automotive, and industrial applications.

🔹 Key Features

• Wide Input Voltage: 4.5 V – 28 V DC.

• Adjustable Output Voltage: 0.8 V – 20 V DC via onboard multi-turn potentiometer.

• High Current Capability: Up to 3 A continuous, 4 A peak (with heatsink).

• High Efficiency: Up to 92 % for minimal heat generation.

• Compact Size: Perfect for tight enclosures or portable projects.

• Integrated Protections: Thermal shutdown, over-current, and short-circuit protection.

🔹 Technical Specifications

• Regulator IC: Monolithic Power Systems MP1584EN

• Input Voltage: 4.5 V – 28 V DC

• Output Voltage: 0.8 V – 20 V DC (adjustable)

• Max Output Current: 3 A continuous (recommend heatsink above 2 A)

• Switching Frequency: 1.5 MHz (typical)

• Conversion Efficiency: Up to 92 %

• Ripple Voltage: <30 mV (typical)

• Operating Temperature: –40 °C to +85 °C

• Module Dimensions: ~22 mm × 17 mm × 4 mm

🔹 Applications & Use Cases

• Arduino & IoT Devices: Stable power supply for Arduino and Accessories or ESP32 projects.

• Raspberry Pi & SBCs: Efficiently power single-board computers from higher-voltage sources.

• LED Lighting & Strips: Step down 12 V/24 V supplies to match LED requirements.

• Battery-Powered Systems: Regulate Li-ion or lead-acid battery voltage to safe levels.

• Robotics & Drones: Provide compact, lightweight power regulation.

🔹 Advantages for Makers & Engineers

• Miniature PCB saves space in portable or embedded builds.

• High-frequency switching allows smaller inductors and capacitors, reducing size and noise.

• Compatible with Electronics Components and Tools and Accessories for rapid prototyping.

🔹 Safety & Precautions

• Pre-set output voltage with a multimeter before connecting sensitive loads.

• Provide adequate cooling when drawing currents above 2 A.

• Avoid reverse polarity and do not exceed 28 V input to prevent damage.

🔗 Helpful Internal Links

• Browse more Power Supply modules.

• Pair with Arduino and Accessories for embedded projects.

• Add supporting Electronics Components for complete circuit builds.

🎥 Video Tutorial

[YouTube tutorial link here]

📝 Product Summary

The Mini MP1584 Adjustable Buck Converter delivers 0.8 V–20 V regulated output at up to 3 A, combining high efficiency with an ultra-small footprint, perfect for Arduino, Raspberry Pi, LED lighting, robotics, and IoT power regulation.