onsemi

LM337BD2TR4

LM337BD2TR4 Description

The LM337BD2TR4 is a high-performance, adjustable negative linear voltage regulator from onsemi, designed to deliver a maximum output current of 1.5A. This regulator is housed in a D2PAK-3 package and is suitable for surface-mount applications. Despite its obsolescence status, the LM337BD2TR4 remains a reliable choice for applications requiring a robust negative voltage regulation solution. It features a low quiescent current of 6 mA and a maximum supply current of 10 mA, ensuring efficient power management. The regulator also boasts a high power supply rejection ratio (PSRR) of 77dB at 120Hz, which helps in maintaining stable output voltage under varying input conditions. Additionally, the LM337BD2TR4 includes over-current and over-temperature protection features, enhancing its reliability and safety in operation.

LM337BD2TR4 Features

• Adjustable Output Voltage: The LM337BD2TR4 offers adjustable output voltage, allowing designers to tailor the output to specific application requirements.
• High Output Current: Capable of delivering up to 1.5A of output current, this regulator is suitable for applications with high current demands.
• Negative Output Configuration: Designed for negative voltage regulation, it is ideal for applications requiring negative supply rails.
• Low Quiescent Current: With a quiescent current of only 6 mA, the regulator ensures high efficiency and minimal power loss.
• High PSRR: A power supply rejection ratio of 77dB at 120Hz ensures stable output voltage even with noisy input supplies.
• Protection Features: Over-current and over-temperature protection features safeguard the regulator and connected components from damage.
• Surface-Mount Package: The D2PAK-3 package is suitable for surface-mount technology, facilitating compact and reliable PCB designs.
• Moisture Sensitivity Level (MSL) 1: The regulator is classified as MSL 1, indicating it is not moisture-sensitive and can be stored and handled without special precautions.
• REACH Compliance: The LM337BD2TR4 is REACH unaffected, ensuring compliance with environmental regulations.

LM337BD2TR4 Applications

The LM337BD2TR4 is well-suited for a variety of applications that require a reliable negative voltage regulator. Some specific use cases include:

• Power Supplies: Ideal for linear power supplies where a stable negative voltage rail is needed.
• Audio Amplifiers: Provides clean power to audio amplifiers, ensuring high-fidelity performance by minimizing noise.
• Medical Equipment: Suitable for medical devices that require precise and stable power regulation.
• Telecommunications: Used in telecom equipment for stable power supply to sensitive components.
• Industrial Control Systems: Provides reliable power regulation in industrial control systems where negative voltage supply is necessary.

Conclusion of LM337BD2TR4

The LM337BD2TR4 is a versatile and reliable negative linear voltage regulator that offers adjustable output voltage, high output current, and robust protection features. Despite being marked as obsolete, its performance characteristics and compatibility with surface-mount technology make it a valuable component for various applications. Its low quiescent current and high PSRR ensure efficient and stable power regulation, making it an ideal choice for designers seeking a dependable negative voltage regulator.