Texas Instruments

LM2990T-5.2

LM2990T-5.2 Description

The LM2990T-5.2 is a fixed-output linear regulator designed for high-performance power management applications. Manufactured by Texas Instruments, this regulator is part of the Power Management Integrated Circuits (PMIC) category and is known for its robust design and reliable performance. The LM2990T-5.2 features a fixed output voltage of -5.2V and is capable of delivering up to 1.8A of output current. It is housed in a through-hole TO220-3 package, making it suitable for applications requiring a negative output configuration.

LM2990T-5.2 Features

• Output Type: Fixed at -5.2V, ensuring stable and consistent power supply.
• Output Current: Capable of delivering up to 1.8A, making it suitable for demanding applications.
• Number of Regulators: Single regulator design simplifies circuit design and reduces complexity.
• Output Configuration: Negative output configuration, ideal for applications requiring negative voltage supply.
• Supply Current: Maximum supply current of 5 mA ensures efficient power usage.
• Voltage Dropout: Maximum dropout voltage of 1V at 1A, allowing for efficient operation even under low input voltage conditions.
• Quiescent Current: Low quiescent current of 1 mA minimizes power consumption during idle states.
• PSRR: High Power Supply Rejection Ratio (PSRR) of 58dB at 1kHz, ensuring minimal noise and ripple in the output voltage.
• Protection Features: Over-temperature and short-circuit protection enhance reliability and protect against potential faults.
• Moisture Sensitivity Level: MSL 1 (Unlimited), indicating the device is not sensitive to moisture, making it suitable for a wide range of environments.
• Package: Supplied in a tube package, ensuring safe and reliable handling and storage.

LM2990T-5.2 Applications

The LM2990T-5.2 is ideal for a variety of applications where a stable and reliable negative voltage supply is required. Some specific use cases include:

• Telecommunications Equipment: Providing stable power to analog and digital circuits in communication systems.
• Industrial Control Systems: Ensuring reliable power supply for control modules and sensors.
• Medical Devices: Supplying power to critical components in medical equipment where stability and reliability are paramount.
• Automotive Electronics: Powering various electronic systems in vehicles, including infotainment and control units.
• Consumer Electronics: Used in devices such as audio amplifiers and other equipment requiring a negative voltage supply.

Conclusion of LM2990T-5.2

The LM2990T-5.2 is a versatile and reliable linear regulator designed to meet the demands of modern power management applications. Its fixed -5.2V output, combined with a high output current capability of 1.8A, makes it suitable for a wide range of applications. The device's low dropout voltage, high PSRR, and robust protection features ensure efficient and stable operation. Despite being marked as obsolete, the LM2990T-5.2 remains a valuable component for engineers and designers looking for a reliable and efficient power management solution.