---
product_id: 77764780
title: "CentIoT - Buck Converter - DC-DC 3A 4-35V to 1.5-35V LM2596 LM2596S Step-Down adjustable Power Supply Module"
brand: "centiot"
price: "1894 Ft"
currency: HUF
in_stock: true
reviews_count: 8
category: "Cent Io T"
url: https://www.desertcart.hu/products/77764780-centiot-buck-converter-dc-dc-3a-4-35v-to-1
store_origin: HU
region: Hungary
---

# 3A max current 92% high efficiency 1.25-35V adjustable output CentIoT - Buck Converter - DC-DC 3A 4-35V to 1.5-35V LM2596 LM2596S Step-Down adjustable Power Supply Module

**Brand:** centiot
**Price:** 1894 Ft
**Availability:** ✅ In Stock

## Summary

> ⚡ Step down your voltage, step up your game!

## Quick Answers

- **What is this?** CentIoT - Buck Converter - DC-DC 3A 4-35V to 1.5-35V LM2596 LM2596S Step-Down adjustable Power Supply Module by centiot
- **How much does it cost?** 1894 Ft with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hu](https://www.desertcart.hu/products/77764780-centiot-buck-converter-dc-dc-3a-4-35v-to-1)

## Best For

- centiot enthusiasts

## Why This Product

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

## Key Features

- • **Compact Yet Mighty:** Small 43x21x14mm footprint fits perfectly into any DIY or professional setup.
- • **Maximize Energy Savings:** Up to 92% conversion efficiency means less wasted power and cooler operation.
- • **Wide Input Voltage Range:** Handles 3.2V to 40V input, perfect for diverse power sources without compromise.
- • **Robust 3A Current Capacity:** Supports demanding loads with a steady 3A max output current.
- • **Power Your Projects with Precision:** Adjust output voltage seamlessly from 1.25V to 35V for ultimate control.

## Overview

The CentIoT Buck Converter is a compact, high-efficiency DC-DC step-down module based on the LM2596S regulator. It delivers adjustable output voltage from 1.25V to 35V at up to 3A current with up to 92% conversion efficiency. Designed for professional and DIY applications, it supports a wide input range (3.2V to 40V) and ensures stable, low-ripple power delivery in a small form factor.

## Description

This is high performance DC to DC Step Down Adjustable Power Supply Module. Based on Newly developed LM2596S Wide range Switching Regulator IN + input positive-IN-input negative. The OUT + output the positive OUT-output negative Specification: 1. Input voltage range: DC 3.2V to 40V (input voltage must be higher than the output voltage above 1.5V. Could not boost) 2. Output voltage range: DC voltage from 1.25V to 35V continuously adjustable, high efficiency (92%) of the maximum output current of 3A 3. Conversion efficiency: 92% (the highest) 4. Output ripple: 5. Switching frequency: 65KHz 6. Operating Temperature: -45 to +85 deg C 7. Size: 43mm * 21mm * 14mm (L * W * H) 8. Note: This is a step-down module, the input voltage must higher than the output voltage

Review: Powering Raspberry Pi as a print server - Fast delivery, good packaging and works like a charm!!👍👍 Lowest voltage attainable was ~1.5V. I used this buck converter to get a 5V supply from a 30V source inside a HP printer. 5V was needed to power up a Raspberry Pi WiFi print server which could be fitted inside the printer cavity to convert this non WiFi printer to a WiFi one. Initially the buck converter gave out 1.5V then after few clockwise turns of the adjustment screw it started putting out 5.1V which was perfect. It didn't load the printer power supply significantly at all.
Review: Works fine - The voltage adjuster needs to be more smooth in operation. I used to step down my laptop charger voltage from 20v to 14v to charge bike battery. Initially it was pain to set the output voltage . It charged in 9 hrs with 1A o/p.

## Features

- This DC to DC Step-Down Adjustable Power Supply Module is based on the LM2596 switching regulator
- Input voltage: DC 3.2V to 40V (input voltage must be higher than the output voltage above 1.5V. Could not boost)
- Output Voltage: DC voltage from 1.25V to 35V continuously adjustable, high efficiency (92%) of the maximum output current of 3A.
- Conversion efficiency: Up to 92% (the higher the voltage, the higher the efficiency)
- The measured 12V input, 5V output current is 1A load regulation of less than 1%

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01LZHJWFB |
| Best Sellers Rank | #331,927 in Electronics ( See Top 100 in Electronics ) #1,202 in Power Supplies (Computers & Accessories) |
| Brand | CentIoT |
| Brand Name | CentIoT |
| Country of Origin | China |
| Current Rating | 3 Amps |
| Customer Reviews | 3.6 out of 5 stars 250 Reviews |
| Importer Contact Information | Contact@centiot.com | www.centiot.com/support |
| Item Type Name | Buck converter |
| Item Weight | 4 Grams |
| Manufacturer | CentIoT, 69, First Cross, Nehru Nagar, Karaikal, Puducherry – 609605, Contact@centiot.com | www.centiot.com/support |
| Manufacturer Contact Information | Contact@centiot.com | www.centiot.com/support |
| Minimum Frequency | 50 Hz |
| Model Number | DC001-LM2596-SMD-LED |
| Mounting Type | PCB Mount |
| Packer Contact Information | Minanu Labs Private Limited, F6 Jayanthi Flats, Plot 42 42 43 3rd Street, Indira Nagar, Venba Avenue, Sithalapakkam, Chennai - 60012 |
| Power Source | DC |
| Power Source Type | DC |
| Specification Met | Meets general safety and performance criteria |
| UPC | 618020766914 |
| Warranty Description | No |

## Images

![CentIoT - Buck Converter - DC-DC 3A 4-35V to 1.5-35V LM2596 LM2596S Step-Down adjustable Power Supply Module - Image 1](https://m.media-amazon.com/images/I/61k5H-b9K8L.jpg)
![CentIoT - Buck Converter - DC-DC 3A 4-35V to 1.5-35V LM2596 LM2596S Step-Down adjustable Power Supply Module - Image 2](https://m.media-amazon.com/images/I/51a8AUkKUCL.jpg)
![CentIoT - Buck Converter - DC-DC 3A 4-35V to 1.5-35V LM2596 LM2596S Step-Down adjustable Power Supply Module - Image 3](https://m.media-amazon.com/images/I/51FtTBtWUtL.jpg)
![CentIoT - Buck Converter - DC-DC 3A 4-35V to 1.5-35V LM2596 LM2596S Step-Down adjustable Power Supply Module - Image 4](https://m.media-amazon.com/images/I/41j19Mqtn-L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Powering Raspberry Pi as a print server
*by A***N on 11 June 2019*

Fast delivery, good packaging and works like a charm!!👍👍 Lowest voltage attainable was ~1.5V. I used this buck converter to get a 5V supply from a 30V source inside a HP printer. 5V was needed to power up a Raspberry Pi WiFi print server which could be fitted inside the printer cavity to convert this non WiFi printer to a WiFi one. Initially the buck converter gave out 1.5V then after few clockwise turns of the adjustment screw it started putting out 5.1V which was perfect. It didn't load the printer power supply significantly at all.

### ⭐⭐⭐⭐ Works fine
*by D***U on 8 June 2021*

The voltage adjuster needs to be more smooth in operation. I used to step down my laptop charger voltage from 20v to 14v to charge bike battery. Initially it was pain to set the output voltage . It charged in 9 hrs with 1A o/p.

### ⭐ Bad quality
*by S***M on 23 April 2025*

Connection lagate ki kharab

## Frequently Bought Together

- CentIoT - Buck Converter - DC-DC 3A 4-35V to 1.5-35V LM2596 LM2596S Step-Down adjustable Power Supply Module
- Raspberry Pi 5 (8GB)
- Raspberry Pi 4 Model B (4GB)

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*Product available on Desertcart Hungary*
*Store origin: HU*
*Last updated: 2026-03-12*