MP1584 3A DC-DC Adjustable Step-Down Power Supply Module (Mini Buck Converter)

When your project requires stepping down a battery pack or wall adapter to a safe logic voltage, but traditional modules like the LM2596 are simply too bulky to fit inside your enclosure, the MP1584 step-down (buck) module is the ultimate solution. Barely larger than a fingernail, this incredibly compact converter takes input voltages ranging from 4.5 Volts up to 28 Volts and efficiently steps them down to a highly stable, adjustable output anywhere between 0.8 Volts and 20 Volts.

Despite its microscopic footprint, the MP1584 is a powerhouse. By utilizing a very high switching frequency of up to 1.5 MHz, it requires significantly smaller onboard inductors and capacitors while dramatically reducing electrical noise and ripple. This allows it to achieve up to 96 percent conversion efficiency while comfortably driving a 3-Amp load. It is the absolute favorite power module for drone builders, RC hobbyists, and custom IoT designers who need to hide a robust power supply inside tight, 3D-printed cases or small aircraft frames.

Key Features & Functional Advantages

• Ultra-Compact Footprint: Measuring only 22mm by 17mm, it is one of the smallest 3-Amp switching regulators available on the market, perfect for space-constrained electronics.

• High-Frequency Switching: Operates at a rapid 1.0 MHz to 1.5 MHz, which drastically reduces high-frequency output ripple to less than 30mV, providing exceptionally clean power for sensitive sensors and cameras.

• Fully Adjustable Output: Features a miniature precision potentiometer. Using a small screwdriver, you can easily dial in the exact logic voltage required by your specific components.

• Wide Input Compatibility: Safely accepts anything from standard 5V USB lines up to 24V industrial rails and multi-cell lithium polymer (LiPo) drone batteries.

• High Efficiency Conversion: Advanced pulse-skipping mode allows the circuit to run at up to 96% efficiency, keeping your battery running longer and generating minimal heat.

Perfect For

• Drones and RC Vehicles: The absolute standard for taking a 3S or 4S LiPo flight battery and stepping it down to safely power 5-Volt flight controllers, receivers, and FPV cameras without adding weight.

• Miniature IoT Devices: Hiding a dedicated 3.3-Volt or 5-Volt power rail inside tiny, self-contained sensor nodes and ESP8266 enclosures.

• Camera Power Supplies: Providing clean, low-ripple voltage to sensitive video equipment where electrical noise would cause visual artifacts.

• Custom Mobile Power: Replacing bulky linear regulators in DIY portable electronics to maximize battery life and reduce thermal throttling.

Technical Specifications

• Device Type: DC-DC Step-Down (Buck) Switching Converter

• Main Control Chip: MP1584EN

• Input Voltage Range: 4.5 Volts to 28.0 Volts DC

• Adjustable Output Voltage: 0.8 Volts to 20.0 Volts DC

• Maximum Output Current: 3.0 Amps (Peak / Short duration), ~1.5A to 2.0A continuous without cooling

• Switching Frequency: 1.0 MHz (Typical) up to 1.5 MHz

• Maximum Efficiency: Up to 96 percent

• Output Ripple: < 30mV

• Dimensions: Approximately 22mm x 17mm x 4mm

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Please note, a delivery fee of €4.99 applies for orders under €50. For those in remote areas, be aware that our couriers may apply an extra surcharge. This additional fee helps cover the costs of transporting your items to harder-to-reach locations.