--- product_id: 98948402 title: "DollaTek 5Pcs MP1584EN ultra Small DC-DC 3A power Step-Down Adjustable Module Buck Converter 24V To 12v 9V 5V 3V for Arduino" brand: "dollatek" price: "€ 10.76" currency: EUR in_stock: true reviews_count: 13 category: "Dolla Tek" url: https://www.desertcart.it/products/98948402-dollatek-5pcs-mp1584en-ultra-small-dc-dc-3a-power-step store_origin: IT region: Italy --- # 3A max output current Compact 22x17x4 mm size Wide 4.5-28V input range DollaTek 5Pcs MP1584EN ultra Small DC-DC 3A power Step-Down Adjustable Module Buck Converter 24V To 12v 9V 5V 3V for Arduino **Brand:** dollatek **Price:** € 10.76 **Availability:** ✅ In Stock ## Summary > ⚡ Tiny Powerhouse, Big Impact — Step Down in Style! ## Quick Answers - **What is this?** DollaTek 5Pcs MP1584EN ultra Small DC-DC 3A power Step-Down Adjustable Module Buck Converter 24V To 12v 9V 5V 3V for Arduino by dollatek - **How much does it cost?** € 10.76 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/98948402-dollatek-5pcs-mp1584en-ultra-small-dc-dc-3a-power-step) ## Best For - dollatek enthusiasts ## Why This Product - Trusted dollatek brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Robust & Reliable:** Operates flawlessly from -45°C to 85°C, perfect for demanding environments and long-term use. - • **Compact Yet Mighty:** Ultra-small footprint fits seamlessly into tight spaces without sacrificing performance. - • **Efficient Energy Conversion:** Up to 92% efficiency minimizes power loss and heat, keeping your builds cool and reliable. - • **Multi-Pack Value & Versatility:** Five modules included to power multiple devices or backup your projects — never run out of juice. - • **Power Your Projects with Precision:** Adjustable output from 0.8V to 20V lets you tailor voltage exactly to your device needs. ## Overview The DollaTek 5Pcs MP1584EN Buck Converter is a compact, high-efficiency DC-DC step-down module delivering up to 3A output current. It supports a wide input voltage range (4.5V to 28V) and adjustable output voltage (0.8V to 20V), making it ideal for powering Arduino projects, 3D printer upgrades, and other electronics requiring precise voltage regulation in a small form factor. ## Description Features: Model/Name: DC-DC Resign Module Output Current: 3A (Max) Output Ripple: <30mV Operating temperature: -45 ~ +85 degrees Size: 22 x 17 x 4 (mm) The contents of the box 5x Adjustable Power Step-Down Module Review: Compact solution to drop 24v to 12v/5v for my Noctua Upgrade - Worked great when upgrading the fans on my Ender 3 V2. Take time to dial in the required voltage correctly. Twin output is useful if running more than one fan off the Buck or in my case sending the 12v output off to a Micro USB buck to power a Raspberry Pi. It states an input voltage of 23v but working fine with the 24v input on my printer. All 5 working great, no duds. Review: Ideal to set down from 24 volts to 12 volts. - Used one of these to reduce voltage from 24 volts to 12 volts on my 3d printer to run a different fan. Works well. It was also possible to find a 3d printed case on a well known website for stl files which worked perfectly. Good value for money. ## Features - Mini MP1584EN DC to DC buck converter step-down module with a wide operating range - Input voltage: 4.5 V to 28 V; Output voltage: 0.8 V to 20 V - Output current: 3 A (maximum); Conversion efficiency: 92% (maximum) - Output ripple: less than 30 mV; Switching frequency: 1.5 MHz (highest), typically 1 MHz - Operating temperature: -45 ℃ to 85 ℃; Size: 22 mm by 17 mm by 4 mm; Warning: do not reverse the positive and negative terminals to avoid any possible damage; Do not use light load (less than 10% of output power) or without load ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07DJ5HZ7G | | Brand | DollaTek | | Country Of Origin | China | | Current Rating | 3 Amps | | Customer Reviews | 4.1 4.1 out of 5 stars (268) | | Item Dimensions D x W x H | 4D x 17W x 4H millimetres | | Manufacturer | DollaTek | | Maximum Frequency | 340 KHz | | Minimum Frequency | 50 Hz | | Model Number | 742548981815 | | Mounting Type | PCB Mount | | Power Source | Electrical Cable | | Specification Met | IECEx | | UPC | 742548981815 | ## Product Details - **Brand:** DollaTek - **Current rating:** 3 Amps - **Mounting type:** PCB Mount - **Power source:** Electrical Cable - **Product dimensions:** 4D x 17W x 4H millimetres ## Images ![DollaTek 5Pcs MP1584EN ultra Small DC-DC 3A power Step-Down Adjustable Module Buck Converter 24V To 12v 9V 5V 3V for Arduino - Image 1](https://m.media-amazon.com/images/I/61zRTkoTE3L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Compact solution to drop 24v to 12v/5v for my Noctua Upgrade *by R***H on 14 March 2021* Worked great when upgrading the fans on my Ender 3 V2. Take time to dial in the required voltage correctly. Twin output is useful if running more than one fan off the Buck or in my case sending the 12v output off to a Micro USB buck to power a Raspberry Pi. It states an input voltage of 23v but working fine with the 24v input on my printer. All 5 working great, no duds. ### ⭐⭐⭐⭐⭐ Ideal to set down from 24 volts to 12 volts. *by J***N on 11 February 2024* Used one of these to reduce voltage from 24 volts to 12 volts on my 3d printer to run a different fan. Works well. It was also possible to find a 3d printed case on a well known website for stl files which worked perfectly. Good value for money. ### ⭐⭐⭐⭐ Does the job! *by R***S on 20 December 2025* Does the job. Needed to step down 12v to 5v for an ESP32 project I was making. The pot on the first one "broke" -- or at least couldn't be set accurately. This could have been me winding it too far one way, but I don't think I put too much force on i.e. The second one was fine through the development and I wasn't particularly gently -- I'm sure it fell of the desk once or twice too! This one stayed the voltage, but I added some hot glue during final assembly of my project to be sure. I've not tested the remaining 3 boards. ## Frequently Bought Together - DollaTek 5Pcs MP1584EN ultra Small DC-DC 3A power Step-Down Adjustable Module Buck Converter 24V To 12v 9V 5V 3V for Arduino - Fermerry 22 AWG Electrical Wire 0.33mm² Flexible Silicone Tinned Copper Wire Hook up Kit Stranded Wire Spool 10ft 3 Meter Each 6 Colors Gauge - ELEGOO 120pcs Multicolored Dupont Wire 40pin Male to Female, 40pin Male to Male, 40pin Female to Female Breadboard Jumper Ribbon Cables Kit Compatible with Arduino Projects --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.it/products/98948402-dollatek-5pcs-mp1584en-ultra-small-dc-dc-3a-power-step](https://www.desertcart.it/products/98948402-dollatek-5pcs-mp1584en-ultra-small-dc-dc-3a-power-step) --- *Product available on Desertcart Italy* *Store origin: IT* *Last updated: 2026-05-06*