STMicroelectronics

LM317D2T

LM317D2T Description

The LM317D2T is a versatile linear voltage regulator IC from STMicroelectronics, designed to provide adjustable positive output voltages. With a maximum input voltage of 40V and an output current capability of 1.5A, this device is well-suited for a variety of applications requiring stable and efficient voltage regulation. The LM317D2T features a single output regulator, adjustable output voltage ranging from 1.2V to 37V, and operates over a wide temperature range of 0°C to 125°C. This device is RoHS3 compliant, REACH unaffected, and classified as EAR99 for export control purposes.

LM317D2T Features

• Adjustable Output Voltage: The LM317D2T offers a wide range of adjustable output voltages, making it suitable for various applications.
• High Output Current: Capable of delivering up to 1.5A, this regulator can handle demanding power requirements.
• Robust Protection Features: Incorporates over current, over temperature, and short circuit protection to safeguard the device and connected components.
• Excellent PSRR: Provides a power supply rejection ratio of 80dB to 65dB at 120Hz, ensuring stable operation under varying input conditions.
• Low Quiescent Current: Consumes only 10mA in quiescent mode, contributing to energy efficiency in low-power applications.
• Surface Mount Package: The D2PAK package facilitates easy integration into surface mount printed circuit board designs.

LM317D2T Applications

The LM317D2T is ideal for applications where precise and stable voltage regulation is critical. Some specific use cases include:

• Power Supply Design: For designing stable and efficient power supplies in various electronic devices.
• Battery Management Systems: To regulate voltage in battery-powered devices, ensuring optimal battery life and performance.
• Industrial Equipment: In industrial control systems where reliable voltage regulation is essential for system stability.
• Automotive Electronics: For voltage regulation in automotive electronics, ensuring consistent performance under varying operating conditions.

Conclusion of LM317D2T

The LM317D2T from STMicroelectronics is a high-performance linear voltage regulator, offering adjustable output voltages, high current capability, and robust protection features. Its wide operating temperature range and low quiescent current make it suitable for a broad range of applications, from power supplies to battery management systems. Despite being classified as obsolete, its unique features and advantages make it a reliable choice for applications where stable and efficient voltage regulation is paramount.