MP1584EN Mini DC-DC Buck Converter Module — 3A, 4.5–28V → 0.8–20V, Ultra-Compact (22×17mm)

MP1584EN Mini DC-DC Buck Converter — 3A, Ultra-Compact

Compact, high-efficiency step-down module ideal for modern electronics, drones, automotive and DIY projects.

Key Features & Benefits

• Ultra-Compact: Coin-sized 22 × 17 × 4 mm board — ideal where space is limited.
• 3A Reliable Output: Up to 3A continuous (use proper cooling for sustained currents).
• High Efficiency: Up to ~92% conversion efficiency and fast 1.5MHz switching.
• Wide Input & Adjustable Output: Input 4.5–28V, Output adjustable 0.8–20V.
• Quick Integration: Standard screw terminals and a user adjustment potentiometer.
• Modern Replacement: Smaller, faster and more responsive than legacy LM2596 modules.

Description

The MP1584EN mini buck converter is the modern successor to older step-down modules. It offers the same dependable 3A capability in a tiny, high-frequency package that runs cooler and reacts faster to load changes. This makes it perfect for powering microcontrollers, sensors, motor controllers, LED strips, and other battery-powered or 12V/24V projects where PCB space is at a premium.

How to Use

1. Connect Input: Apply 4.5–28V DC to IN+ and IN- (observe polarity).
2. Set Output: Measure the output with a multimeter and adjust the potentiometer to your desired voltage (0.8–20V).
3. Connect Load: Attach your device to OUT+ and OUT-.

Specifications

• Chip: MP1584EN
• Input Voltage: 4.5 – 28 V
• Output Voltage: 0.8 – 20 V (adjustable)
• Max Output Current: 3 A
• Conversion Efficiency: Up to 92%
• Switching Frequency: Up to 1.5 MHz (typical ~1 MHz)
• Output Ripple: <30 mV (typical)
• Operating Temp: -45 ℃ to 85 ℃
• Size: 22 × 17 × 4 mm

Package Includes

• 1 × MP1584EN 3A Mini DC-DC Buck Converter Module

Important Safety Notes

• No reverse polarity protection: Reversing input polarity may permanently damage the module.
• Minimum load: Do not run the module with no load — maintain at least ~10% of rated load to avoid output instability.
• Cooling required at high current: For sustained currents near 3A, provide ventilation or attach a heatsink.

Tip: This module is perfect for replacing bulky regulators in projects — use it to power Arduinos, ESP32/ESP8266 boards, LED drivers, small motors, and more.