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MP1584EN Adjustable DC-DC Step-Down Buck Module 3A 4.5–28V In (2-Pack)
MP1584EN Adjustable DC-DC Step-Down Buck Module 3A 4.5–28V In (2-Pack)
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MP1584EN Adjustable DC-DC Step-Down Buck Converter Module — 3A / 4.5–28V
This compact MP1584EN buck converter module steps down input voltage from 4.5V–28V to an adjustable output of 0.8V–20V at up to 3A continuous current. Operating at 1.5MHz switching frequency, it uses tiny external components and achieves up to 92% efficiency — ideal for powering Arduino, Raspberry Pi, ESP32, and other embedded systems from higher-voltage sources.
Key Specifications
| Parameter | Value |
|---|---|
| IC | MP1584EN (MPS) |
| Input Voltage | 4.5V – 28V DC |
| Output Voltage | 0.8V – 20V (adjustable via trimmer) |
| Output Current | 3A continuous (4A peak) |
| Switching Frequency | 1.5MHz |
| Efficiency | Up to 92% |
| Dropout Voltage | ~0.5V |
| Output Ripple | <30mV typical |
| Module Size | ~23 × 17mm |
| Quantity | 2 modules |
Why Choose MP1584EN Module?
- Ultra-Compact — 23×17mm footprint, smallest in its class for 3A output
- 1.5MHz Switching — Enables tiny inductor and capacitor, reducing module size
- 92% Efficiency — Minimal heat generation; no heatsink needed at moderate loads
- Wide Input Range — 4.5V–28V covers 5V, 9V, 12V, 24V sources
- Adjustable Output — Onboard trimmer pot sets output from 0.8V to 20V
Typical Applications
- 12V/24V to 5V conversion for Arduino, ESP32, Raspberry Pi
- Li-ion battery (3S–6S) to 5V/3.3V regulation
- Solar panel to USB 5V charging regulator
- Car 12V to 5V USB power supply
- Industrial 24V bus to logic-level power
- LED strip voltage regulation
Wiring Guide
Connect IN+ / IN− to power source. Connect OUT+ / OUT− to load. Adjust trimmer clockwise to increase output voltage. Measure output with multimeter before connecting sensitive loads.
FAQ
Q: Can MP1584EN module output 3.3V from a 5V input?
A: Yes — minimum dropout is ~0.5V, so 5V in → 3.3V out works fine at up to 3A.
Q: Is there short-circuit protection?
A: The MP1584EN IC has cycle-by-cycle current limiting. Sustained short-circuit may cause thermal shutdown — always fuse the input.
Package Contents
- 2× MP1584EN Adjustable DC-DC Step-Down Buck Module
