Texas Instruments

LM2991T/LB03  

Linear & Switching Voltage Regulators

LM2991T/LB03 Description

The LM2991T/LB03 is a high-performance, adjustable linear voltage regulator designed by Texas Instruments. This device is specifically tailored for applications requiring a negative output voltage. It features a robust design with a maximum dropout voltage of 1V at 1A, ensuring efficient operation even under varying load conditions. The regulator is housed in a through-hole TO220-5 package, making it suitable for a wide range of industrial and consumer electronics applications.

LM2991T/LB03 Features

• Adjustable Output Voltage: The LM2991T/LB03 offers an adjustable output voltage, providing flexibility to meet various power supply requirements.
• High Output Current: Capable of delivering up to 1A of output current, this regulator is ideal for applications requiring substantial power.
• Low Quiescent Current: With a quiescent current of only 0.7 mA, the LM2991T/LB03 ensures minimal power consumption during operation.
• Enable Control Feature: The enable pin allows for easy control of the regulator's operation, enabling power-saving modes and dynamic power management.
• Protection Features: Over-temperature and short-circuit protection ensure reliable operation and protect the device from damage under adverse conditions.
• High PSRR: A power supply rejection ratio (PSRR) of 60dB at 1kHz ensures excellent noise filtering and stable output voltage.
• Compliance and Reliability: The LM2991T/LB03 is REACH unaffected and RoHS3 compliant, adhering to stringent environmental and safety standards. It also features a moisture sensitivity level (MSL) of 1, indicating unlimited storage life under standard conditions.

LM2991T/LB03 Applications

The LM2991T/LB03 is well-suited for a variety of applications where a negative output voltage is required. Some specific use cases include:

• Power Supplies: Ideal for negative voltage power supplies in laboratory and industrial settings.
• Consumer Electronics: Suitable for powering various consumer devices that require a negative voltage rail.
• Telecommunications: Can be used in telecommunication equipment where a stable negative voltage is necessary for biasing and other functions.
• Medical Equipment: Provides reliable power for medical devices that require precise voltage regulation and low noise.

Conclusion of LM2991T/LB03

The LM2991T/LB03 from Texas Instruments stands out as a versatile and reliable solution for applications requiring a negative output voltage. Its adjustable output, high current capability, and low quiescent current make it an efficient choice for a wide range of power supply needs. The inclusion of enable control and comprehensive protection features further enhances its usability and reliability. With its compliance to environmental standards and robust performance, the LM2991T/LB03 is an excellent choice for engineers and designers looking for a high-quality, adjustable linear voltage regulator.

LM2991T/LB03 Documents

Download datasheets and manufacturer documentation for LM2991T/LB03

PCN Assembly/Origin :

Mult Devices 21/Aug/2017      

Datasheets :

LM2991      

Design Resources :

LM2991 Design with WEBENCH® Power Designer      

PCN Obsolescence/ EOL :

EOL 18/Sept/2023      

HTML Datasheet :

LM2991      

PCN Design/Specification :

LM2991 09/Jan/2017