3PCS LM317 Adjustable Voltage Regulator Power Supply LM317 DC-DC 4.2-40V to 1.2-37V Step Down Buck Converter Board Module

Description

Product Overview

The LM317 adjustable voltage regulator from GODIYMODULES is engineered for precision and reliability in a compact form factor. Designed to accept a broad input voltage range of 4.2 V to 40 V, it delivers a finely tunable output from 1.2 V up to 37 V, making it suitable for a wide variety of electronic projects. The module supports a typical output current of up to 2.2 A, providing enough power for most laboratory and hobbyist applications while maintaining low dropout and high efficiency. Its robust construction includes a heat‑dissipating copper pad, reinforced solder pads, and a protective enclosure that safeguards the circuitry against over‑voltage, over‑current, and thermal stress. The board measures approximately 3.5 × 2.1 × 1.7 cm, allowing it to be integrated into tight spaces on prototype boards, test rigs, and custom enclosures.

Usage

This regulator excels in laboratory environments where precise voltage control is essential for testing sensors, microcontrollers, and communication modules. Engineers can quickly set the desired output voltage using the onboard potentiometer, eliminating the need for external calibration tools. In educational settings, the module serves as a hands‑on teaching aid for students learning about DC‑DC conversion, voltage regulation, and power management concepts. Hobbyists building Arduino‑based projects, 3D printer control boards, or portable battery chargers will find the LM317 module invaluable for stepping down higher battery voltages to safe levels for delicate components. Its reliable performance under continuous operation makes it a trusted choice for small‑scale manufacturing lines that require consistent power delivery across multiple units.

Why Choose Us

GODIYMODULES combines years of expertise in power electronics with a commitment to quality control, ensuring each LM317 regulator meets stringent performance standards. Every unit undergoes comprehensive testing for voltage accuracy, load regulation, and thermal behavior before leaving the factory, guaranteeing that customers receive a product that works out of the box. The module’s design incorporates industry‑standard protection features, such as short‑circuit protection and thermal shutdown, which extend the lifespan of both the regulator and the downstream circuitry. Our responsive technical support team is available to assist with integration questions, firmware adjustments, and troubleshooting, providing peace of mind for both novice makers and seasoned professionals. Additionally, we offer a hassle‑free return policy and a one‑year warranty, underscoring our confidence in the durability and performance of the LM317 regulator.

Key Features

• Wide input voltage range (4.2 V‑40 V) accommodates many power sources
• Adjustable output from 1.2 V to 37 V gives precise control for diverse circuits
• Typical output current up to 2.2 A supports most hobby and lab applications
• Built‑in over‑current and thermal protection enhances safety and reliability
• Responsive technical support and one‑year warranty ensure customer confidence

FAQ

What input voltage should I use for a 12 V output?

For a stable 12 V output, provide an input voltage at least 2 V higher than the desired output, so a 14 V to 15 V source works well. This headroom ensures the regulator can maintain regulation under load variations.

Can I use this module with a lithium‑ion battery pack?

Yes, the LM317 regulator can be powered by a lithium‑ion pack as long as the pack voltage stays within the 4.2 V‑40 V input range. Be sure to include proper battery management circuitry to protect the cells.

How do I set the output voltage accurately?

Adjust the output voltage by turning the small potentiometer on the board while measuring the output with a multimeter. For finer adjustments, you can replace the potentiometer with a precision resistor network.

Is the module suitable for continuous operation?

The regulator is designed for continuous use up to its typical current rating of 2.2 A. Ensure adequate heat sinking if operating near the maximum current for extended periods.

What warranty and support are provided?

GODIYMODULES offers a one‑year warranty covering manufacturing defects and provides technical support via email and online resources to help you integrate the module into your projects.