Texas Instruments

LM2990SX-12/NOPB

LM2990SX-12/NOPB Description

The LM2990SX-12/NOPB is a high-performance linear voltage regulator designed by Texas Instruments, offering a fixed -12V output voltage with a maximum output current of 1.8A. This regulator is part of the Linear & Switching Voltage Regulators category and is housed in a surface-mount DDPAK package, making it suitable for a wide range of electronic applications. The device features a low dropout voltage of 1V at 1A, ensuring efficient operation even under low input-to-output voltage differentials. With a quiescent current of just 1mA and a supply current of up to 5mA, the LM2990SX-12/NOPB is optimized for low power consumption. Additionally, it provides robust protection features, including over-temperature and short-circuit protection, ensuring reliable operation in various conditions.

LM2990SX-12/NOPB Features

• Output Type: Fixed -12V output voltage, providing a stable power supply for negative voltage requirements.
• Output Current: Capable of delivering up to 1.8A, making it suitable for applications requiring high current loads.
• Low Dropout Voltage: A maximum dropout voltage of 1V at 1A ensures efficient operation even when the input voltage is close to the output voltage.
• Low Quiescent Current: With a quiescent current of only 1mA, the regulator minimizes power loss during standby conditions.
• Protection Features: Over-temperature and short-circuit protection enhance the reliability and durability of the device.
• High PSRR: A power supply rejection ratio (PSRR) of 52dB at 1kHz ensures minimal noise and ripple on the output voltage.
• Mounting Type: Surface-mount technology (SMT) allows for compact and reliable integration into printed circuit boards.
• Package: Supplied in a Tape & Reel (TR) package, facilitating automated assembly processes.
• Compliance: ROHS3 compliant and REACH unaffected, ensuring environmental and regulatory standards are met.

LM2990SX-12/NOPB Applications

The LM2990SX-12/NOPB is ideal for a variety of applications where a stable and efficient negative voltage supply is required. Some specific use include cases:

• Power Supply Circuits: Ideal for providing a stable -12V supply in power distribution systems, ensuring reliable operation of downstream components.
• Telecommunications Equipment: Suitable for powering negative voltage rails in telecommunication devices, such as modems and routers.
• Industrial Control Systems: Provides a reliable power source for negative voltage requirements in industrial automation and control systems.
• Medical Devices: Ensures stable power supply in medical equipment where reliability and precision are critical.
• Consumer Electronics: Can be used in consumer devices that require a negative voltage rail, such as audio amplifiers and certain types of sensors.

Conclusion of LM2990SX-12/NOPB

The LM2990SX-12/NOPB from Texas Instruments is a high-performance linear voltage regulator that stands out due to its fixed -12V output, high output current capability, and low dropout voltage. Its low quiescent current and robust protection features make it an ideal choice for applications requiring efficient and reliable power supply solutions. With its surface-mount package and compliance with environmental standards, the LM2990SX-12/NOPB is well-suited for modern electronic designs. Whether used in power supply circuits, telecommunications equipment, industrial control systems, medical devices, or consumer electronics, the LM2990SX-12/NOPB delivers exceptional performance and reliability.