STMicroelectronics

LM2931D  

Linear & Switching Voltage Regulators

LM2931D Description

The LM2931D is a linear positive adjustable voltage regulator designed by STMicroelectronics, a leading manufacturer in the electronics industry. This regulator is part of the Power Management Integrated Circuits (PMIC) category and is housed in a surface-mount 8SOIC package. It is designed to provide a stable and adjustable output voltage ranging from 2.5V to 25.4V, making it suitable for a wide range of applications. The LM2931D can deliver a maximum output current of 100mA while maintaining a low dropout voltage of 0.6V at full load, ensuring high efficiency even under varying load conditions. Despite its small form factor, it offers robust protection features, including over-current and over-temperature protection, ensuring reliable operation in demanding environments. Although the product is now obsolete, its technical specifications and performance benefits make it a noteworthy component in the power management domain.

LM2931D Features

• Adjustable Output Voltage: The LM2931D offers an adjustable output voltage range from 2.5V to 25.4V, providing flexibility for various power supply requirements.
• Low Dropout Voltage: With a maximum dropout voltage of 0.6V at 100mA, the regulator maintains high efficiency, especially in low-voltage applications.
• High Output Current: Capable of delivering up to 100mA, the LM2931D can support a wide range of devices and systems.
• Low Quiescent Current: The regulator operates with a quiescent current of only 1mA, minimizing power consumption during idle states.
• High PSRR: A Power Supply Rejection Ratio (PSRR) of 80dB at 120Hz ensures excellent noise filtering and stable output voltage.
• Protection Features: Over-current and over-temperature protection features safeguard the regulator and connected devices from damage.
• Surface Mount Package: The 8SOIC package is ideal for compact designs and surface-mount assembly processes.
• Compliance: The LM2931D is REACH unaffected and RoHS3 compliant, ensuring it meets environmental and safety standards.

LM2931D Applications

The LM2931D is well-suited for a variety of applications where a stable and adjustable power supply is required. Some specific use cases include:

• Consumer Electronics: Ideal for powering portable devices, such as smartphones, tablets, and wearable technology, where space and power efficiency are critical.
• Industrial Control Systems: Suitable for powering sensors, actuators, and microcontrollers in industrial environments where reliability and protection features are essential.
• Medical Devices: Can be used in medical equipment where precise voltage regulation and low noise are necessary for accurate measurements and safe operation.
• Automotive Electronics: Applicable in automotive applications where the regulator's robustness and protection features can withstand harsh operating conditions.

Conclusion of LM2931D

The LM2931D from STMicroelectronics is a versatile and reliable linear voltage regulator with adjustable output voltage and low dropout characteristics. Its ability to deliver up to 100mA with minimal quiescent current and high PSRR makes it an efficient choice for various applications. The inclusion of over-current and over-temperature protection ensures robustness and reliability, while its surface-mount package and compliance with environmental standards make it suitable for modern electronics design. Although the product is now obsolete, its technical attributes and performance benefits continue to make it a valuable reference for power management solutions.

LM2931D Documents

Download datasheets and manufacturer documentation for LM2931D

Datasheets :

LM2931 Datasheet      

HTML Datasheet :

LM2931 Datasheet