onsemi

LM317T

The LM317T is a versatile, adjustable voltage regulator integrated circuit (IC) manufactured by ON Semiconductor. It is part of the LM317 series, which includes fixed and adjustable voltage regulators with various packaging options and features. The LM317T is available in a TO-220 or TO-263 package, making it suitable for a wide range of applications.

Description:

The LM317T is a three-terminal adjustable voltage regulator that can provide an output voltage ranging from 1.25V to 37V. It is designed to accept a wide input voltage range, typically between 3V and 40V, depending on the desired output voltage. The device features internal current limiting, thermal shutdown, and safe area compensation, making it a reliable choice for various applications.

Features:

1. Adjustable output voltage: 1.25V to 37V
2. Wide input voltage range: 3V to 40V
3. Output current up to 1.5A (with appropriate heatsinking)
4. Internal current limiting and thermal shutdown for added protection
5. Low dropout voltage (typically around 3V at full load)
6. High line and load regulation
7. Internal compensation for stability with a wide range of external capacitors
8. Available in TO-220 and TO-263 packages

Applications:

1. Linear power supplies for low to medium power applications
2. Battery chargers and power management circuits
3. Voltage regulation for microprocessors and other sensitive electronics
4. LED drivers and lighting applications
5. Laboratory power supplies and instrumentation
6. Motor speed controllers and solenoid drivers
7. Audio and video amplifiers
8. General-purpose power conversion and voltage regulation

The LM317T is a popular choice for hobbyists and engineers due to its versatility, ease of use, and reliability. It can be used in a wide range of applications, from simple linear power supplies to more complex power management circuits.