Description
Product Overview
The LM317 Adjustable Regulated Power Supply Module is a compact, high-performance linear voltage regulator board built around the industry-standard LM317 integrated circuit from Texas Instruments . This module provides a simple, reliable solution for converting higher DC voltages into a stable, continuously adjustable lower output voltage, making it an essential tool for electronics hobbyists, educators, and professionals.
Unlike switching regulators that use high-frequency noise, the LM317 is a linear regulator that delivers exceptionally clean and quiet power, making it ideal for powering sensitive analog circuits, audio equipment, and microcontroller-based projects where noise immunity is critical . The module accepts a wide input voltage range from 4.2V to 40V DC and provides an adjustable output from 1.2V to 37V, covering virtually all common voltage requirements for electronic devices .
The module features an onboard precision potentiometer for easy voltage adjustment, clearly labeled screw terminals for input and output connections, and an intuitive layout that makes it perfect for benchtop power supplies, battery charging circuits, sensor power sources, and DIY electronics projects. With a maximum output current of 1.5A and built-in thermal overload protection, this module is both versatile and robust .
Key Features
-
Wide Input Voltage Range: Accepts DC input from 4.2V to 40V, compatible with a variety of power sources including wall adapters, batteries, and solar panels .
-
Adjustable Output Voltage: Provides continuously adjustable output from 1.2V to 37V via onboard precision potentiometer, covering common voltages like 3.3V, 5V, 9V, 12V, and 24V .
-
1.5A Output Current: Capable of delivering up to 1.5A of continuous output current, sufficient for most small to medium electronic loads .
-
Low Output Noise: As a linear regulator, the LM317 produces very low output ripple and noise, making it ideal for powering sensitive analog and audio circuits .
-
Built-in Protection Features: Includes current limiting, thermal overload protection, and safe operating area protection to safeguard the module and your devices .
-
Simple Adjustment: Onboard precision potentiometer allows for easy, tool-free voltage adjustment (clockwise to increase, counter-clockwise to decrease) .
-
Screw Terminal Connections: Features screw terminals for input and output connections, allowing for solderless, secure wiring.
-
Compact Form Factor: Small PCB footprint (approximately 35.6mm × 16.8mm) allows for easy integration into a wide variety of projects and enclosures .
Technical Specifications
| Parameter | Operating Value |
|---|---|
| Input Voltage | DC 4.2V – 40V |
| Output Voltage | DC 1.2V – 37V (Continuously adjustable) |
| Output Current | 1.5A (Max) |
| Minimum Input-Output Differential | 3V (Vin must be at least 3V higher than Vout) |
| Maximum Input-Output Differential | 30V |
| Line Regulation | 0.01% typical |
| Load Regulation | 0.1% typical |
| Operating Temperature | 0°C to +125°C |
| Module Dimensions | Approx. 35.6mm × 16.8mm |
| Characteristic Frequency | 100 MHz |
Reviews
There are no reviews yet.