LM317 Voltage Regulator: Features, Price, Application

Catalog

Introduction

LM317 Overview

LM317 Pinout

LM317 CAD-Model

LM317 Features

LM317 Diagram

LM317 Price

LM317 Application

Conclusion

Introduction:
The LM317 voltage regulator is a versatile and widely used integrated circuit (IC) that provides a stable output voltage for a variety of electronic devices. It has gained popularity due to its simplicity, reliability, and affordability. In this article, we will explore the features, price, and applications of the LM317 voltage regulator.

LM317 Overview

The LM217, LM317 are monolithic integrated circuits in TO-220, TO 220FP and D2PAK packages intended for use as positive adjustable voltage regulators.
They are designed to supply more than 1.5 A of load current with an output voltage
adjustable over a 1.2 to 37 V range.
The nominal output voltage is selected by means of a resistive divider, making the
device exceptionally easy to use and eliminating the stocking of many fixed
regulators.

LM317 Pinout

LM317 CAD-Model

Symbol

Footprint

3D-Model

LM317 Features:

Output voltage range: 1.2 to 37 V

Output current in excess of 1.5 A

0.1% line and load regulation

Floating operation for high voltages

Complete series of protections. current limiting, thermal shutdown and SOA control

LM317 Diagram:

LM317 Package Outline

LM317 Price:
The LM317 voltage regulator is an affordable component, making it accessible to hobbyists, students, and professionals alike. The price may vary depending on the manufacturer, package type, and quantity purchased. It is widely available in electronic component stores, online marketplaces, and distributors.

LM317 Application:

1. Power Supplies: The LM317 is commonly used in power supply circuits to regulate the output voltage. It can be employed in various applications, such as battery chargers, DC-DC converters, and adjustable power sources.

2. Audio Amplifiers: The LM317 can be utilized as a voltage regulator in audio amplifier circuits to ensure a stable and reliable power supply. This helps in achieving high-quality audio output.

3. LED Lighting: LED lighting systems often require a constant and regulated power supply. The LM317 can be used to control the voltage and current supplied to LEDs, ensuring their optimal performance and longevity.

4. Test and Measurement Equipment: The LM317 finds its application in test and measurement equipment, where precise and stable voltage regulation is crucial for accurate readings and reliable operation.

Conclusion:
The LM317 voltage regulator is a versatile and cost-effective IC that offers adjustable output voltage, wide input voltage range, current limiting, and thermal overload protection. Its affordability, simplicity, and reliability have made it a popular choice in various electronic circuits. Whether it’s powering devices, audio amplification, LED lighting, or test equipment, the LM317 proves to be a valuable component in many applications.

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