Texas Instruments

LM137K/883  

Linear & Switching Voltage Regulators

LM137K/883 Description

The LM137K/883 is a high-performance linear regulator designed for applications requiring a negative adjustable output voltage. Manufactured by Texas Instruments, this device is part of the Power Management Integrated Circuits (PMIC) category and offers robust performance with a maximum input voltage of 40V and an output current capability of 1.5A. The LM137K/883 features a single regulator with a negative output configuration, making it suitable for a variety of electronic systems that require stable and reliable power supply solutions.

LM137K/883 Features

• Adjustable Output Voltage: The LM137K/883 provides an adjustable output voltage, allowing designers to tailor the power supply to specific application requirements.
• High Input Voltage Range: With a maximum input voltage of 40V, this regulator can handle a wide range of input voltages, making it versatile for various power supply scenarios.
• High Output Current: Capable of delivering up to 1.5A of output current, the LM137K/883 ensures sufficient power for demanding applications.
• Negative Output Configuration: The negative output configuration is ideal for applications requiring negative voltage rails, such as in analog circuits and power amplifiers.
• Protection Features: The LM137K/883 includes over-current and over-temperature protection, ensuring reliable operation and safeguarding against potential damage.
• High PSRR: The regulator boasts a high power supply rejection ratio (PSRR) ranging from 77dB to 60dB at 120Hz, which helps in maintaining a stable output voltage even with varying input conditions.
• Through Hole Mounting: The through-hole mounting type facilitates easy integration into PCB designs and ensures mechanical stability.
• Moisture Sensitivity Level (MSL): With an MSL of 1 (Unlimited), the LM137K/883 is suitable for environments with varying humidity levels, enhancing its reliability and durability.
• Compliance and Packaging: The device is REACH Affected and packaged in trays, ensuring compliance with regulatory standards and ease of handling during manufacturing processes.

LM137K/883 Applications

The LM137K/883 is ideal for a range of applications where a stable and reliable negative voltage supply is required. Some specific use cases include:

• Analog Circuits: The high PSRR and adjustable output voltage make it suitable for precision analog circuits that require a stable power supply.
• Power Amplifiers: The high output current and negative output configuration are ideal for driving power amplifiers in audio and communication systems.
• Industrial Equipment: The robust design and wide input voltage range make it suitable for industrial applications where reliability and versatility are crucial.
• Medical Devices: The over-current and over-temperature protection features ensure safe operation, making it suitable for medical devices where reliability is paramount.

Conclusion of LM137K/883

The LM137K/883 from Texas Instruments is a versatile and reliable linear regulator designed for applications requiring a negative adjustable output voltage. Its high input voltage range, high output current capability, and robust protection features make it an excellent choice for a variety of electronic systems. The high PSRR ensures stable performance, while the through-hole mounting and moisture sensitivity level enhance its durability and ease of integration. Whether used in analog circuits, power amplifiers, industrial equipment, or medical devices, the LM137K/883 offers a reliable and efficient power supply solution.

LM137K/883 Documents

Download datasheets and manufacturer documentation for LM137K/883