---
product_id: 654535861
title: "5 Pack LM2596 DC to DC Buck Converter 3.0-40V to 1.5-35V Adjustable Voltage Regulator Electronic Voltage Stabilizer Power Supply Step Down Module"
brand: "seloky"
price: "€ 15.50"
currency: EUR
in_stock: true
reviews_count: 8
category: "Seloky"
url: https://www.desertcart.de/products/654535861-5-pack-lm2596-dc-to-dc-buck-converter-3-0
store_origin: DE
region: Germany
---

# 92% efficiency max Compact 3.94x1.97x0.67 in Adjustable 1.5-35V output 5 Pack LM2596 DC to DC Buck Converter 3.0-40V to 1.5-35V Adjustable Voltage Regulator Electronic Voltage Stabilizer Power Supply Step Down Module

**Brand:** seloky
**Price:** € 15.50
**Availability:** ✅ In Stock

## Summary

> ⚡ Power your projects smarter, not harder!

## Quick Answers

- **What is this?** 5 Pack LM2596 DC to DC Buck Converter 3.0-40V to 1.5-35V Adjustable Voltage Regulator Electronic Voltage Stabilizer Power Supply Step Down Module by seloky
- **How much does it cost?** € 15.50 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/654535861-5-pack-lm2596-dc-to-dc-buck-converter-3-0)

## Best For

- seloky enthusiasts

## Why This Product

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

## Key Features

- • **Wide Input Range:** Supports 3V to 40V input, perfect for diverse applications from solar setups to DIY power banks.
- • **Space-Saving Design:** Compact footprint fits seamlessly into tight project spaces without compromising power delivery.
- • **Robust & Reliable Build:** Engineered with SANYO solid capacitors and high-Q inductors on a 36μ thick PCB for long-lasting performance.
- • **Precision Voltage Control:** Fine-tune output voltage with a multi-turn potentiometer for ultimate project customization.
- • **Thermal & Overload Protection:** Integrated safeguards prevent overheating and current overload, ensuring your components stay safe.

## Overview

The Seloky 5 Pack LM2596 DC to DC Buck Converters deliver up to 92% efficiency with adjustable output from 1.5V to 35V, supporting a wide input voltage range of 3V to 40V. Built with premium components like SANYO solid capacitors and high-Q inductors on a durable 36μ thick PCB, these compact modules feature integrated thermal shutdown and current limit protection. Ideal for DIY electronics, solar power systems, and communication devices, they offer precise voltage regulation in a space-saving design.

## Description

Buy Seloky 5 Pack LM2596 DC to DC Buck Converter 3.0-40V to 1.5-35V Adjustable Voltage Regulator Electronic Voltage Stabilizer Power Supply Step Down Module: Power Converters - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: They work, but be aware you have to turn the screw MANY times! - These actually work pretty well for their price point. But, when I first started testing them, I was alarmed to find that turning the adjustment screw on the pot was not doing anything. I tested a few of them, and they all did this. I was super frustrated and going to return them when I happened across an article where someone mentioned that these trim pots sometimes take as much as 30-50 FULL TURNS to go from one end to another. Armed with that knowledge, I started really cranking on the screw, and guess what? They adjusted just fine and worked as described. Now, I can't speak to reliability or long-term voltage stability, but at least at the outset, they have been taking a 24V DC input and converting it to anywhere between 5-12V output which is what I needed for my projects.
Review: Solid and Useful Buck Regulator - These buck regulators are great. I quickly tested my lot of 5, and they are essentially identical. With a 9V input from a lab supply, I adjusted the voltage to 3.3V with a 581 ohm load, and then checked the output voltage with a 10.2 ohm load. The voltage with 10.2 ohm load dropped to 3.265V +/- 0.008V. The power drawn from the 9V lab supply was 156mA +/- 1mA. Based on these numbers, 1.045W is dissipated in the 10.2 ohm load and 1.404W is drawn from the lab supply, so the buck regulator is 74.4% efficient under these conditions. These appear to be a nice implementation of a variable output buck regulator based on the LM2596. The manufacturing quality is very good, and they function correctly and nearly identically. The connection points for input and output voltages are all on a consistent 0.1" grid, so these are easy to use on a standard prototype board. They also have a couple larger holes that could be used to mount them on nylon standoffs. Paired with a 12V 1A or 2A AC adapter, these make a nice power supply solution for a project requring 3.3V or 5V.

## Features

- Features: Built with SANYO solid capacitors, 36μ thick PCB, high-Q inductors, and an LED output indicator for enhanced performance and reliability.
- Application: Perfect for DIY power bank projects, powering monitors, communication devices, and a wide range of other electronic equipment.
- Wide Input Voltage Range: The LM2596 buck converter supports a broad input voltage range from 3V to 40V, making it ideal for various applications, including DIY electronics, solar power systems, and more.(Input voltage must be at least 1.5V higher than the output voltage; no boost function)
- High-Efficiency Output: Achieve up to 92% conversion efficiency with this step-down regulator, ensuring stable and efficient voltage regulation for your devices, from 1.25V to 35V.
- Adjustable Voltage Regulator: Easily customize the output voltage with a precision multi-turn potentiometer, providing flexibility for powering a wide range of electronic projects and devices.
- Integrated Thermal Protection: Built-in thermal shutdown and current limit protection safeguard your devices from overheating and overload, extending the lifespan of your components.
- Space-Saving & Robust Build: The LM2596 dc to dc buck converter boasts a compact and sturdy PCB design, allowing seamless integration into small spaces in your projects while maintaining reliable performance.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DBVYP91F |
| Best Sellers Rank | #13,319 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #52 in Power Converters |
| Customer Reviews | 4.5 4.5 out of 5 stars (213) |
| Date First Available | August 1, 2024 |
| Item Weight | 2.39 ounces |
| Item model number | SY-LM2596 |
| Manufacturer | Seloky |
| Product Dimensions | 3.94 x 1.97 x 0.67 inches |

## Product Details

- **Brand:** Seloky
- **Color:** 5 Pack
- **Input Voltage:** 3.2 Volts (DC)
- **Item Weight:** 0.07 Kilograms
- **Item dimensions L x W x H:** 3.94 x 1.97 x 0.67 inches

## Images

![5 Pack LM2596 DC to DC Buck Converter 3.0-40V to 1.5-35V Adjustable Voltage Regulator Electronic Voltage Stabilizer Power Supply Step Down Module - Image 1](https://m.media-amazon.com/images/I/71nsN6HZpmL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ They work, but be aware you have to turn the screw MANY times!
*by N***. on November 17, 2025*

These actually work pretty well for their price point. But, when I first started testing them, I was alarmed to find that turning the adjustment screw on the pot was not doing anything. I tested a few of them, and they all did this. I was super frustrated and going to return them when I happened across an article where someone mentioned that these trim pots sometimes take as much as 30-50 FULL TURNS to go from one end to another. Armed with that knowledge, I started really cranking on the screw, and guess what? They adjusted just fine and worked as described. Now, I can't speak to reliability or long-term voltage stability, but at least at the outset, they have been taking a 24V DC input and converting it to anywhere between 5-12V output which is what I needed for my projects.

### ⭐⭐⭐⭐⭐ Solid and Useful Buck Regulator
*by K***B on September 10, 2025*

These buck regulators are great. I quickly tested my lot of 5, and they are essentially identical. With a 9V input from a lab supply, I adjusted the voltage to 3.3V with a 581 ohm load, and then checked the output voltage with a 10.2 ohm load. The voltage with 10.2 ohm load dropped to 3.265V +/- 0.008V. The power drawn from the 9V lab supply was 156mA +/- 1mA. Based on these numbers, 1.045W is dissipated in the 10.2 ohm load and 1.404W is drawn from the lab supply, so the buck regulator is 74.4% efficient under these conditions. These appear to be a nice implementation of a variable output buck regulator based on the LM2596. The manufacturing quality is very good, and they function correctly and nearly identically. The connection points for input and output voltages are all on a consistent 0.1" grid, so these are easy to use on a standard prototype board. They also have a couple larger holes that could be used to mount them on nylon standoffs. Paired with a 12V 1A or 2A AC adapter, these make a nice power supply solution for a project requring 3.3V or 5V.

### ⭐⭐⭐⭐⭐ So far so good
*by R***E on January 2, 2026*

They work great! Don’t get hot and seem efficient based on what I’ve done so far. Haven’t used them long enough, but so far they work.

## Frequently Bought Together

- Seloky 5 Pack LM2596 DC to DC Buck Converter 3.0-40V to 1.5-35V Adjustable Voltage Regulator Electronic Voltage Stabilizer Power Supply Step Down Module
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*Product available on Desertcart Germany*
*Store origin: DE*
*Last updated: 2026-03-01*