---
product_id: 599805729
title: "5Pcs LM317 Adjustable Regulator Power Supply Module DC-DC Buck Converter 4.2-40V Adjustable Linear Step-Down Voltage Regulator Circuit Board for Ardunio with 24 AWG Wire"
brand: "daokai"
price: "E£ 1537"
currency: EGP
in_stock: true
url: https://www.desertcart.com.eg/products/599805729-5pcs-lm317-adjustable-regulator-power-supply-module-dc-dc-buck
store_origin: EG
region: Egypt
---

# 2.2A typical output current Compact 35.6x16.8mm module size 1.2-37V adjustable voltage range 5Pcs LM317 Adjustable Regulator Power Supply Module DC-DC Buck Converter 4.2-40V Adjustable Linear Step-Down Voltage Regulator Circuit Board for Ardunio with 24 AWG Wire

**Brand:** daokai
**Price:** E£ 1537
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** 5Pcs LM317 Adjustable Regulator Power Supply Module DC-DC Buck Converter 4.2-40V Adjustable Linear Step-Down Voltage Regulator Circuit Board for Ardunio with 24 AWG Wire by daokai
- **How much does it cost?** E£ 1537 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.eg](https://www.desertcart.com.eg/products/599805729-5pcs-lm317-adjustable-regulator-power-supply-module-dc-dc-buck)

## Best For

- daokai enthusiasts

## Why This Product

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

## Key Features

- • **Wide Input Range:** Operates seamlessly from 4.2V to 40V input, ideal for automotive and DIY projects.
- • **Durable & Compact:** Small footprint with high-temp tolerance (-55°C to 150°C) ensures reliability in demanding environments.
- • **Plug & Play Convenience:** Includes 5 modules plus 24AWG cables for immediate integration and experimentation.
- • **Robust Current Handling:** Supports up to 2.2A output current, perfect for powering diverse electronics.
- • **Precision Voltage Control:** Easily dial in any voltage from 1.2V to 37V for tailored power solutions.

## Overview

This 5-pack LM317 Adjustable Regulator Modules deliver flexible, linear step-down voltage regulation from 1.2V to 37V with up to 2.2A output current. Compact and durable, they support a wide input voltage range (4.2-40V) and come with 24AWG cables, making them perfect for professional-grade DIY electronics, automotive power supplies, and prototyping.

## Description

Parameters: Output Current: 1.5A (min), 2.2A (typ)  Input-output voltage differential (VI-VO): 40Vdc (max)  Adjustable output voltage range: 1.2 ~ 37V  Operating temperature: -55 Celsius ~ +150 Celsius Current output: 1.5A  Voltage Input: 4.2 ~ 40 V  Operating temperature: 0 Celsius ~ 125 Celsius Characteristic frequency: 100MHz Module size: 35.6 mm x16.8 mm  Input Method: VIN input is positive, GND Input Negative  Output Method: VOUT output positive, GND output negative  Maximum output current = 3/(input voltage - output voltage)  Note: 1.Because it is a linear step-down DC-DC circuit, the input voltage needs to be more than 3V higher than the output voltage to ensure the stability of the output voltage. 2.Adjustment method: first connect the input power supply correctly (between 40-4.5), then use a multimeter to monitor the output voltage and adjust the potentiometer (usually clockwise to boost, reverse clockwise to buck) 3.The module is linear, so the efficiency will not be very high. In order to improve the efficiency, there needs to be a voltage difference of 3V between the input and output. But the maximum voltage difference between the input and output should not exceed 30V, that is: the input-output is less than or equal to 30V, otherwise It is easy to burn out the module. 4. If you need short-circuit protection, please connect a self-recovery fuse in series with the input terminal.  Package includes： 5xLM317 Adjustable Regulator Power Supply Module 2x50cm/19.68inch 24AWG Cable

## Features

- Module introduction: Adjustable linear regulator, output current: 1.5A (small value), 2.2A (typical value). input and output voltage difference (VI-VO): 40Vdc (large value). output adjustable voltage range: 1.2～37V. input mode: VIN input positive, GND input negative, output mode: VOUT output positive, GND output negative.
- Adjustment method: first connect the input power supply correctly (between 40-4.5), then use a multimeter to monitor the output voltage and adjust the potentiometer (usually clockwise to boost, reverse clockwise to buck)
- Scope of application: The scope of module application includes adjustable three-terminal voltage regulator modules, which can replace all three-terminal voltage regulator modules such as 7805, 7806, 7809, 7812, and 7824.
- Device power: Vehicle regulated power supply, you only need to connect the input end of this module to the car cigarette lighter to supply power to adjust the potentiometer, and the output voltage can be adjusted from 1.25V to 30V to charge your mobile phone, MP3, MP4, PSP, etc. Equipment power supply, simple and convenient.
- Package includes: You will get 5 x LM317 Adjustable Regulator Power Supply Module, 2 x 50cm/19.68inch 24AWG Cable.

## Product Details

- **Brand:** DAOKAI
- **Current Rating:** 1.5 Amps
- **Circuit Breaker Type:** Standard
- **Mounting Type:** Panel Mount
- **Number Of Poles:** 1

## Images

![5Pcs LM317 Adjustable Regulator Power Supply Module DC-DC Buck Converter 4.2-40V Adjustable Linear Step-Down Voltage Regulator Circuit Board for Ardunio with 24 AWG Wire - Image 1](https://m.media-amazon.com/images/I/713GqO1I+nL.jpg)
![5Pcs LM317 Adjustable Regulator Power Supply Module DC-DC Buck Converter 4.2-40V Adjustable Linear Step-Down Voltage Regulator Circuit Board for Ardunio with 24 AWG Wire - Image 2](https://m.media-amazon.com/images/I/610XsFijgKL.jpg)
![5Pcs LM317 Adjustable Regulator Power Supply Module DC-DC Buck Converter 4.2-40V Adjustable Linear Step-Down Voltage Regulator Circuit Board for Ardunio with 24 AWG Wire - Image 3](https://m.media-amazon.com/images/I/71cM4r26gOL.jpg)
![5Pcs LM317 Adjustable Regulator Power Supply Module DC-DC Buck Converter 4.2-40V Adjustable Linear Step-Down Voltage Regulator Circuit Board for Ardunio with 24 AWG Wire - Image 4](https://m.media-amazon.com/images/I/61ofg13mx5L.jpg)
![5Pcs LM317 Adjustable Regulator Power Supply Module DC-DC Buck Converter 4.2-40V Adjustable Linear Step-Down Voltage Regulator Circuit Board for Ardunio with 24 AWG Wire - Image 5](https://m.media-amazon.com/images/I/61x2c9WQRQL.jpg)

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*Product available on Desertcart Egypt*
*Store origin: EG*
*Last updated: 2026-02-21*