Texas Instruments

LM317KCT

LM317KCT Description

The LM317KCT is a linear voltage regulator IC manufactured by Texas Instruments, designed for applications requiring adjustable positive voltage output. With a maximum input voltage of 40V and an output current capability of 1.5A, this device is suitable for a wide range of power management tasks. The LM317KCT is currently classified as obsolete, but it remains a popular choice for its performance and reliability in legacy systems.

LM317KCT Features

• Adjustable Output Voltage: The LM317KCT offers an adjustable output voltage range from 1.25V to 37V, providing flexibility in power supply design.
• 1.5A Output Current: Capable of sourcing up to 1.5A, this regulator is suitable for applications requiring higher current loads.
• Single Regulator Configuration: Designed with one output, simplifying the design process for single-rail power supplies.
• Protection Features: Incorporates over current, over temperature, and short circuit protection to safeguard the device and connected components.
• Robust PSRR: Provides a power supply rejection ratio (PSRR) of 80dB to 65dB at 120Hz, ensuring stable operation under varying input conditions.
• Low Quiescent Current: Consumes only 10mA in quiescent mode, making it energy-efficient.
• Compliance: RoHS3 compliant and REACH unaffected, adhering to environmental regulations.
• Moisture Sensitivity Level (MSL) 1: Suitable for a wide range of manufacturing and storage conditions.
• Wide Operating Temperature: Operates effectively in temperatures from 0°C to 125°C, making it suitable for various environments.

LM317KCT Applications

The LM317KCT is ideal for applications where adjustable, stable, and efficient voltage regulation is required. Some specific use cases include:

• Power Supplies: For designing custom power supplies in industrial, automotive, and consumer electronics.
• Battery Chargers: As a voltage regulator in battery charging circuits to manage charging voltage and current.
• Audio Equipment: In audio amplifiers and preamplifiers to provide stable power to the audio stages.
• Telecommunications: For voltage regulation in telecommunications equipment to ensure reliable operation.

Conclusion of LM317KCT

While the LM317KCT is now considered obsolete, its robust features, adjustable output, and protection capabilities make it a reliable choice for legacy systems and applications requiring a stable, adjustable positive voltage output. Despite its age, the LM317KCT continues to be a popular choice among engineers for its performance and versatility in a variety of power management applications.