---
product_id: 151906242
title: "10 Pack LM2596 DC-DC Buck Converter Step Down Module Power Supply DIP Output 1.25V-30V 3A"
brand: "bulvack"
price: "$113067"
currency: COP
in_stock: true
reviews_count: 13
category: "Bulvack"
url: https://www.desertcart.co/products/151906242-10-pack-lm2596-dc-dc-buck-converter-step-down-module
store_origin: CO
region: Colombia
---

# 3.2-35V input range 3A max output current 1.25-30V adjustable output 10 Pack LM2596 DC-DC Buck Converter Step Down Module Power Supply DIP Output 1.25V-30V 3A

**Brand:** bulvack
**Price:** $113067
**Availability:** ✅ In Stock

## Summary

> ⚡ Power your projects with precision and efficiency — don’t get left in the voltage dust!

## Quick Answers

- **What is this?** 10 Pack LM2596 DC-DC Buck Converter Step Down Module Power Supply DIP Output 1.25V-30V 3A by bulvack
- **How much does it cost?** $113067 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co](https://www.desertcart.co/products/151906242-10-pack-lm2596-dc-dc-buck-converter-step-down-module)

## Best For

- bulvack enthusiasts

## Why This Product

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

## Key Features

- • **User-Friendly Design:** LED indicator and compact 45x21x13mm size with mounting holes for easy integration
- • **High Current Capacity:** Delivers up to 3A output current for demanding applications
- • **Premium Build Quality:** All solid SANYO capacitors & high-Q inductors ensure durability and efficiency
- • **Wide Input Voltage Range:** Supports DC 3.2V to 35V for versatile power sources
- • **Precision Voltage Control:** Continuously adjustable output from 1.25V to 30V to fit any project

## Overview

This 10-pack LM2596 DC-DC Buck Converter modules offer a robust step-down power solution with a wide input range (3.2V-35V) and adjustable output voltage (1.25V-30V) at up to 3A current. Built with premium SANYO solid capacitors and high-Q inductors, these compact modules feature LED indicators and mounting holes, making them ideal for professional-grade electronics projects and efficient power management.

## Description

Electrical Parameters:Input: DC 3.2V to 35V (input voltage must be more than the output voltage can not be higher than boost 1.25v.)Output: 1.25V to 30V DC voltage is continuously adjustable, high efficiency and maximum output current of 3A.Features: All solid capacitors using SANYO, 36u thick circuit boards, high-Q inductors with high power output LED indicatorSize: 45 21 13mm / 1.69 0.83 0.51inch (including potentiometers)minimum with locating hole with LED indicator DC-DCInstructions:Access to power (3-35V), adjust the blue potentiometer knob (clockwise rotation generally boost, buck counterclockwise rotation) and with a multimeter to monitor the output voltage reaches the required voltage.Wiring:1. welding, welded directly to the power line input (output) port;2. solder pins, or pins can be inserted through the lead insertion use in tunnel plate; soldered directly to the PCB after another or add pins.Note: The input and output can not be reversed, reverse might burn chips;This is a step-down module, the input voltage is higher than the required output voltage;Output 2A or less long period of time without additional heat sink output current is greater than 2.5A (or output power greater than 10W) to work long hours please add heat sink.Package Included: 10pcs X LM2596S Module

Review: Great voltage regulator - Works great! I use them to reduce 15V voltage to power LED post lights, which require 1.2V. The output resistor needs to be adjusted to reduce voltage because by default the output voltage it too high.
Review: Low Power Considerations - Summary: - Drops 14-12v to 6.5v and holds the output at the set point across that range. - This board is cheaper than the switching voltage regulator component alone. - Can it really be an authentic LM2496S - who knows, do we care? - Basic reference circuitry with an adjustable potentiometer - right for more, left for less. -- For fixed applications (like mine) you could nuke that pot and slap in a fixed value resistor. - For low power functionality - delete the LED and 102 (1,000 Ohm) resistor. -- You'll lose the 'on' indicator LED and its companion resistor, but Ohms law doesn't lie. -- Post operation, no load power use dropped from 0.010A to 0.007A - no puns, that's a 30% improvement. - Dodging name brand over pricing. - There are probably better ways to do this, don't be hatin'. Using this device to step down 14-12v to 6.5v to power remote trail cameras with slightly more available 12v deep cycle batteries vs the 6v alternative. Testing on the bench, no-load showed this device was capable of performing as advertised. I don't have a scope so I can't comment on output noise, still chunked a MLCC (better capacitor) on flipside of the board across the existing output cap - it was 'used' so whatever, gave myself an 'E' for low-ESR. - I'll digress. Generally speaking it makes sense from a user/support perspective to go with the manufacturer 'name brand' accessories for these remote units. But I couldn't resist the penny pinching backside of mine to not go DIY on this one - and you'll see why if you choose to hang in here for another paragraph (or so). For a quantity of 10x at this time, these boards are $1.35/each - the LM2596S alone, is $2.50+ component from the component superstores mouser or digi-key. Most likely this is a ghost shift LM2596S, thank you (big semiconductor corp here) for doing business with China and/or letting the design slip, now I'm doing business with them. I only feel slightly guilty, but you're a bunch of penny pinching trolls too so don't even. Now that the ethics, China, and money bag corporation rants are set aside my fiscal justification for going this route: - OEM part (connectors, cable, regulator, and plug) cost $14.99+TAX - This part, some janky-as copper clad aluminum cable, and the wrong sized plugs resulting in a direct connect plus battery spades, cost <$3.00/each. Most likely the OEM did the same thing, but with some ill volume discounts, meaning they're taking your $12 after materials straight to the bank. Keeping my $12, doing this thing - forgot to indicate - yes the battery side will be fused, I don't need a big-as forest fire on my conscience.

## Features

- Input voltage range: DC 3.2V to 35V (input voltage must be higher than the voltage output to 1.5V or more can not be boosted.)
- Output: 1.25V to 30V DC voltage is continuously adjustable, high efficiency and maximum output current of 3A.
- All solid capacitors using SANYO
- 36u thick circuit boards
- High-Q inductors with high power output LED indicator

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07VVXF7YX |
| Best Sellers Rank | #30,192 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #117 in Power Converters |
| Customer Reviews | 4.6 4.6 out of 5 stars (943) |
| Date First Available | August 3, 2019 |
| Item Weight | 4.6 ounces |
| Item model number | ZT001 |
| Manufacturer | Zixtec |
| Product Dimensions | 1 x 1 x 1 inches |
| UPC | 745672639546 |

## Product Details

- **Brand:** BULVACK
- **Current Rating:** 3 Amps
- **Mounting Type:** PCB Mount
- **Power Source:** Corded Electric
- **Specification Met:** CE, UL

## Images

![10 Pack LM2596 DC-DC Buck Converter Step Down Module Power Supply DIP Output 1.25V-30V 3A - Image 1](https://m.media-amazon.com/images/I/81Tyrr4SHyL.jpg)

## Available Options

This product comes in different **Item Package Quantity** options.

## Questions & Answers

**Q: Will v-out stay stable w/ a changing v-in? for instance 14v in and set for 3 v out but over time input (battery) drops to 11v.**
A: I haven't monitored the Output Voltage vs. Input Voltage change, but I have noticed that the output tends to drift down as the output current increases.  I haven't seen it drop below the 2.5% allowed in the spec, though, and I have drawn as much as 2.3 Amps.

**Q: Is there any delay when supplying voltage till output is sent?**
A: Output voltage begins to ramp up within a few micro seconds (usec) of applying input voltage but it takes a few hundred usec to reach full output voltage.  The time to achieve full output depends on both the input and output voltage.  I was curious so I measured a few cases.  The times to reach full output voltage with a 470 Ohm load were:
10.0V in, 5.0V out: 288 usec
20.0V in, 5.0V out: 304 usec
20.0V in, 15.0V out: 570 usec
30.0V in, 15.0V out: 572 usec
30.0V in, 25.0V out: 662 usec
Cheers

**Q: I don't understand the limitations. Can it be used to bring 5V down to 3V?**
A: It absolutely can. I have used these to convert my 12V supply into both 5V and 3.3V

**Q: At 12 volts input and (say) 5 volts output, what is the quiescent (no-load) current on the 12 volt side?  Thanks!**
A: On my regulators the no load input current for 12V in 5V out is 7.8 mA with the output indicator LED installed.  With the LED, the no-load current depends strongly on output voltage rising to 23 mA  at 11V output.  With the LED removed the no load input current at 12 V in 5 V out is 6.0 mA.  Without the LED is independent of output voltage.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great voltage regulator
*by Y***I on November 16, 2025*

Works great! I use them to reduce 15V voltage to power LED post lights, which require 1.2V. The output resistor needs to be adjusted to reduce voltage because by default the output voltage it too high.

### ⭐⭐⭐⭐⭐ Low Power Considerations
*by P***G on September 18, 2020*

Summary: - Drops 14-12v to 6.5v and holds the output at the set point across that range. - This board is cheaper than the switching voltage regulator component alone. - Can it really be an authentic LM2496S - who knows, do we care? - Basic reference circuitry with an adjustable potentiometer - right for more, left for less. -- For fixed applications (like mine) you could nuke that pot and slap in a fixed value resistor. - For low power functionality - delete the LED and 102 (1,000 Ohm) resistor. -- You'll lose the 'on' indicator LED and its companion resistor, but Ohms law doesn't lie. -- Post operation, no load power use dropped from 0.010A to 0.007A - no puns, that's a 30% improvement. - Dodging name brand over pricing. - There are probably better ways to do this, don't be hatin'. Using this device to step down 14-12v to 6.5v to power remote trail cameras with slightly more available 12v deep cycle batteries vs the 6v alternative. Testing on the bench, no-load showed this device was capable of performing as advertised. I don't have a scope so I can't comment on output noise, still chunked a MLCC (better capacitor) on flipside of the board across the existing output cap - it was 'used' so whatever, gave myself an 'E' for low-ESR. - I'll digress. Generally speaking it makes sense from a user/support perspective to go with the manufacturer 'name brand' accessories for these remote units. But I couldn't resist the penny pinching backside of mine to not go DIY on this one - and you'll see why if you choose to hang in here for another paragraph (or so). For a quantity of 10x at this time, these boards are $1.35/each - the LM2596S alone, is $2.50+ component from the component superstores mouser or digi-key. Most likely this is a ghost shift LM2596S, thank you (big semiconductor corp here) for doing business with China and/or letting the design slip, now I'm doing business with them. I only feel slightly guilty, but you're a bunch of penny pinching trolls too so don't even. Now that the ethics, China, and money bag corporation rants are set aside my fiscal justification for going this route: - OEM part (connectors, cable, regulator, and plug) cost $14.99+TAX - This part, some janky-as copper clad aluminum cable, and the wrong sized plugs resulting in a direct connect plus battery spades, cost <$3.00/each. Most likely the OEM did the same thing, but with some ill volume discounts, meaning they're taking your $12 after materials straight to the bank. Keeping my $12, doing this thing - forgot to indicate - yes the battery side will be fused, I don't need a big-as forest fire on my conscience.

### ⭐⭐⭐⭐ Buck converter works well but needs an additional capacitor to lower the high ripple voltage.
*by D***R on June 27, 2025*

These work well. However have very high ripple voltage .. over 100 mV, and need about 1000uF added to the output to be acceptable.

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*Product available on Desertcart Colombia*
*Store origin: CO*
*Last updated: 2026-03-07*