MP1584EN Adjustable DC-DC Step-Down Buck Module 3A 4.5–28V In (2-Pack)

$12.36 USD

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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.