Texas Instruments

LM2931CSX/NOPB  

Linear & Switching Voltage Regulators

LM2931CSX/NOPB Description

The LM2931CSX/NOPB is a linear voltage regulator designed by Texas Instruments, featuring an adjustable output voltage and a maximum input voltage of 26V. This regulator is capable of delivering up to 100mA of output current, making it suitable for a variety of low-power applications. The regulator's output voltage can be adjusted from a minimum of 3V to a maximum of 24V, providing flexibility for different power requirements. It operates with a low dropout voltage of 0.3V at 100mA, ensuring high efficiency even at low input-to-output voltage differentials.

The LM2931CSX/NOPB is housed in a surface-mount package, specifically the DDPAK, which is ideal for compact designs. It features a maximum supply current of 15mA and a quiescent current of 1mA, contributing to its overall efficiency. The regulator includes protection features such as over-temperature, reverse polarity, and short-circuit protection, enhancing its reliability and robustness. Additionally, it boasts a power supply rejection ratio (PSRR) of 55dB at 120Hz, ensuring stable output voltage under varying input conditions.

LM2931CSX/NOPB Features

• Adjustable Output Voltage: The LM2931CSX/NOPB offers an adjustable output voltage range from 3V to 24V, providing flexibility for a wide range of applications.
• Low Dropout Voltage: With a maximum dropout voltage of 0.3V at 100mA, this regulator maintains high efficiency even at low input-to-output voltage differences.
• Protection Features: Over-temperature, reverse polarity, and short-circuit protection ensure the regulator's reliability and robustness in various operating conditions.
• High PSRR: A power supply rejection ratio of 55dB at 120Hz ensures stable output voltage, making it suitable for noise-sensitive applications.
• Surface-Mount Package: The DDPAK package is ideal for compact designs, facilitating easy integration into modern electronic systems.
• Low Quiescent Current: A quiescent current of 1mA and a maximum supply current of 15mA contribute to the regulator's overall efficiency.

LM2931CSX/NOPB Applications

The LM2931CSX/NOPB is well-suited for a variety of applications that require a reliable and efficient voltage regulator. Its adjustable output voltage and low dropout characteristics make it ideal for:

• Battery-Powered Devices: The low dropout voltage ensures efficient operation even as the battery voltage drops.
• Low-Power Systems: The regulator's low quiescent current and high efficiency make it suitable for systems where power consumption is a critical factor.
• Noise-Sensitive Applications: The high PSRR makes it ideal for applications where a stable output voltage is essential, such as in precision measurement equipment.
• Industrial Equipment: The robust protection features and surface-mount package make it suitable for industrial applications where reliability and compact design are important.

Conclusion of LM2931CSX/NOPB

The LM2931CSX/NOPB is a versatile and efficient linear voltage regulator designed for low-power applications. Its adjustable output voltage, low dropout voltage, and robust protection features make it a reliable choice for a wide range of applications. Despite being marked as obsolete, its technical specifications and performance benefits continue to make it a valuable component for engineers and designers in the electronics industry.

LM2931CSX/NOPB Documents

Download datasheets and manufacturer documentation for LM2931CSX/NOPB

Datasheets :

LM2931 Series      

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LM2931 Series