---
product_id: 204864704
title: "5pcs JacobsParts MP1584 3.3V Fixed Output 3A DC Step Down Converter Buck Module 4.5-28V in"
brand: "jacobsparts"
price: "€ 16.28"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.de/products/204864704-5pcs-jacobsparts-mp1584-3-3v-fixed-output-3a-dc-step
store_origin: DE
region: Germany
---

# 3A Peak Power 92% Efficiency Ultra Compact Size 5pcs JacobsParts MP1584 3.3V Fixed Output 3A DC Step Down Converter Buck Module 4.5-28V in

**Brand:** jacobsparts
**Price:** € 16.28
**Availability:** ✅ In Stock

## Summary

> 🔋 Power Your Passion with Precision!

## Quick Answers

- **What is this?** 5pcs JacobsParts MP1584 3.3V Fixed Output 3A DC Step Down Converter Buck Module 4.5-28V in by jacobsparts
- **How much does it cost?** € 16.28 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.de](https://www.desertcart.de/products/204864704-5pcs-jacobsparts-mp1584-3-3v-fixed-output-3a-dc-step)

## Best For

- jacobsparts enthusiasts

## Why This Product

- Trusted jacobsparts brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Space-Saving Design:** Ultra-small dimensions (22x17x4mm) fit anywhere.
- • **Versatile Input Range:** Compatible with 4.5-28V for diverse applications.
- • **Power Up Your Projects:** Unleash 3A peak power for your micro-controller needs.
- • **Cutting-Edge Efficiency:** Achieve up to 92% efficiency with synchronous rectification.
- • **Whisper-Quiet Operation:** Less than 30mV ripple ensures smooth performance.

## Overview

The JacobsParts MP1584 is a compact 3.3V fixed output DC step-down converter designed for efficiency and versatility. With a peak output of 3A and an input range of 4.5-28V, this module is perfect for powering micro-controllers and battery-operated devices. Its ultra-small size and high efficiency make it an essential component for modern electronic projects.

## Description



## Features

- 3.3V fixed output non-isolated DC buck voltage regulator, ultra small module 22x17x4mm
- Great for micro-controllers like the ESP8266, devices designed for 2x AA batteries, and more.
- Input: 4.5-28V, Output:3.3V, 3A Peak / 1.5A Sustained
- Efficiency: Up to 92% (depends on the difference between input and output voltage) This module uses synchronous rectification, the most efficient power conversion available.
- 1.0MHz Switching Frequency, <30mV ripple (no load), MP1584 IC

## Images

![5pcs JacobsParts MP1584 3.3V Fixed Output 3A DC Step Down Converter Buck Module 4.5-28V in - Image 1](https://m.media-amazon.com/images/I/61fbhkiZo0L.jpg)
![5pcs JacobsParts MP1584 3.3V Fixed Output 3A DC Step Down Converter Buck Module 4.5-28V in - Image 2](https://m.media-amazon.com/images/I/71Mig+us7FL.jpg)
![5pcs JacobsParts MP1584 3.3V Fixed Output 3A DC Step Down Converter Buck Module 4.5-28V in - Image 3](https://m.media-amazon.com/images/I/61175HfPnfL.jpg)

## Available Options

This product comes in different **Style** options.

## Questions & Answers

**Q: Will this item truly supply a 5V output all the way down to 4.5V input?**
A: No, it cannot boost; but it will pass the 4.5V rather than cutting out.  Below 4.5V it may cut out entirely.

**Q: any chance this will handle 24v for small cooling fans? I want to run 12v silent fans in a 24v system and love how tiny these are.?**
A: No way will they handle 24v. I smoked 3 of them instantly with 12v before ordering some real Pololu converters.

**Q: I have a 5v 6a dc power brick and i'm looking to split it into two 5v 3a sources using this as protection. will it work?**
A: It looks like it accepts 3A but only outputs 5V 1.5A. I wouldn't waste your money if I were you. Get a different module,  these tend to blow easily.

**Q: What is the lowest input voltage?**
A: Lowest input voltage as marked is 4.75 V.  Anything lower becomes unstable.

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Great value
  

*by F***R on Reviewed in the United States on March 8, 2024*

I've used these in many projects and they perform very well. They are advertised to work with input voltages from 4.5 to 28Vdc with a fixed output of 3.3V.  Note that these are step down converters and to test the output voltage, there must be a load attached. With no load, the output will approach 4 Vdc  when the input voltage is less than 5.2V or so.

### ⭐⭐⭐⭐ 4.0 out of 5 stars







  
  
    Good product
  

*by L***. on Reviewed in the United States on May 31, 2024*

Good product

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Perfect for automotive lighting and general LED use
  

*by A***I on Reviewed in the United States on February 13, 2018*

Crazy tiny which makes them extra easy to use. I used a few to regulate voltage to interior LED lights I installed in my car so that they didn't pull direct ~13.5v since they were a bit too bright and got too hot. It is very nice to be able to just turn the potentiometer to set the lights to a desired output. With the LEDs pulling about 1A at 10V the driver seems to be working flawlessly and I even noticed that because its fully regulated the small fluctuations I noticed in the lights before have completely stopped.On a side note, there is absolutely no reverse polarity protection. One fried instantly with a tiny zap when I accidentally plugged it in backwards.

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*Product available on Desertcart Germany*
*Store origin: DE*
*Last updated: 2026-01-23*