MP1584EN DC-DC Buck Module – 4.5-28V Input, 0.8-20V Adjustable Output, 3A, High Efficiency
Description
The MP1584EN DC-DC Buck Module is a compact, high-efficiency step-down converter designed for precise voltage regulation in embedded systems and DIY electronics. Based on the Monolithic Power Systems MP1584EN regulator IC, it accepts a wide input voltage range of 4.5V to 28V and provides an adjustable output from 0.8V to 20V via an onboard potentiometer . With a maximum output current of 3A and efficiency up to 92%, this module is ideal for powering microcontrollers, sensors, LEDs, and communication modules from higher-voltage sources such as 12V or 24V supplies .
The module features a miniature footprint of just 22mm × 17mm × 4mm, making it suitable for space-constrained projects. It includes built-in protection features such as overcurrent, short-circuit, and thermal shutdown, ensuring safe and reliable operation .
Key Features
- Wide Input Voltage Range: Accepts 4.5V to 28V DC, compatible with 12V and 24V systems
- Adjustable Output Voltage: 0.8V to 20V via onboard multi-turn potentiometer
- High Output Current: Up to 3A maximum
- High Efficiency: Up to 92% conversion efficiency for minimal heat generation
- Compact Size: 22mm × 17mm × 4mm for easy integration into tight spaces
- Low Output Ripple: Less than 30mV for clean power delivery
- High Switching Frequency: Up to 1.5MHz (typically 1MHz)
- Built-in Protections: Overcurrent, short-circuit, and thermal shutdown
- Low Quiescent Current: 100µA for battery-powered applications
Technical Specifications
Parameter | Specification |
|---|---|
| Regulator IC | MP1584EN (Monolithic Power Systems) |
| Input Voltage Range | 4.5V – 28V DC |
| Output Voltage Range | 0.8V – 20V DC (adjustable) |
| Maximum Output Current | 3A |
| Conversion Efficiency | Up to 92% |
| Output Ripple | <30mV |
| Switching Frequency | 100kHz – 1.5MHz (typically 1MHz) |
| Quiescent Current | 100µA |
| Operating Temperature | -45°C to +85°C |
| Dimensions | 22mm × 17mm × 4mm |
| PCB Layers | 2-layer board |
Applications
- Arduino and Microcontroller Projects: Regulated power for Arduino, STM32, and ESP32 boards
- LED Lighting Systems: Constant voltage supply for LED strips and arrays
- Battery-Powered Devices: Efficient step-down for battery-operated equipment
- Industrial Control Systems: Power for sensors, relays, and communication modules
- Automotive Electronics: Regulate 12V/24V vehicle power for 5V or 3.3V devices
- DIY Electronics: Versatile voltage regulation for hobbyist projects