Texas Instruments

LM317AH

LM317AH Description

The LM317AH is a high-performance, adjustable linear voltage regulator designed for a wide range of applications. Manufactured by Texas Instruments, this regulator offers a robust and reliable solution for power management needs. The LM317AH features an adjustable output voltage ranging from 1.25V to 37V, making it highly versatile for various electronic circuits. It supports a maximum input voltage of 40V and can deliver up to 1.5A of output current, ensuring it can handle substantial power requirements. The regulator is designed with a positive output configuration and is available in a through-hole mounting type, making it suitable for both prototyping and production environments. The LM317AH is packaged in bulk and is REACH unaffected and RoHS3 compliant, adhering to stringent environmental standards. It also features a low quiescent current of 10 mA and a PSRR (Power Supply Rejection Ratio) that ranges from 80dB to 65dB at 120Hz, ensuring minimal noise and high stability in the output voltage. Additionally, the LM317AH includes over-current, over-temperature, and short-circuit protection features, enhancing its reliability and safety in operation.

LM317AH Features

• Adjustable Output Voltage: The LM317AH provides an adjustable output voltage from 1.25V to 37V, offering flexibility to meet diverse power requirements.
• High Input Voltage Capability: With a maximum input voltage of 40V, the regulator can operate in a wide range of input conditions, making it suitable for various power supply applications.
• High Output Current: The regulator is capable of delivering up to 1.5A of output current, ensuring it can power demanding electronic devices.
• Low Quiescent Current: A quiescent current of only 10 mA ensures minimal power consumption during operation, enhancing efficiency.
• High PSRR: The regulator offers a PSRR ranging from 80dB to 65dB at 120Hz, ensuring high stability and minimal noise in the output voltage.
• Protection Features: Over-current, over-temperature, and short-circuit protection features enhance the reliability and safety of the regulator in various operating conditions.
• Compliance: The LM317AH is REACH unaffected and RoHS3 compliant, adhering to environmental standards and ensuring safe usage in electronic devices.
• Mounting Type: The through-hole mounting type makes it easy to integrate into both prototyping and production environments.

LM317AH Applications

The LM317AH is ideal for a variety of applications due to its adjustable output voltage, high input voltage capability, and robust protection features. Some specific use cases include:

• Power Supplies: Ideal for adjustable power supplies in laboratories, test benches, and electronic hobbyist projects.
• Battery Chargers: Suitable for charging various types of batteries, providing a stable and adjustable voltage source.
• Consumer Electronics: Can be used in consumer electronics where adjustable voltage regulation is required, such as in audio amplifiers and LED lighting systems.
• Industrial Equipment: Applicable in industrial control systems and automation equipment that require reliable and stable power sources.
• Medical Devices: Suitable for medical devices that need precise voltage regulation and low noise performance.

Conclusion of LM317AH

The LM317AH from Texas Instruments is a versatile and reliable adjustable linear voltage regulator that offers a wide range of technical specifications and performance benefits. Its adjustable output voltage, high input voltage capability, and robust protection features make it an ideal choice for a variety of applications, from power supplies and battery chargers to industrial and medical devices. The low quiescent current and high PSRR ensure minimal power consumption and high stability, while compliance with environmental standards ensures safe and sustainable usage. Whether for prototyping or production, the LM317AH provides a robust solution for power management needs.