STMicroelectronics

LM2931AV50

LM2931AV50 Description

The LM2931AV50 is a fixed-output linear regulator designed by STMicroelectronics, offering a robust solution for power management applications. This regulator is housed in a Through Hole TO220AB package and provides a stable 5V output with a maximum output current of 100mA. It is capable of operating with an input voltage range up to 26V, ensuring compatibility with a variety of power sources. The regulator features a low dropout voltage of 0.6V at 100mA, which allows it to maintain regulation even when the input voltage is close to the output voltage. This makes it particularly suitable for applications where the input voltage may vary significantly. Additionally, the LM2931AV50 includes protection features such as current limiting and thermal shutdown, ensuring reliable operation under varying load conditions. Despite being marked as obsolete, the regulator remains REACH unaffected and ROHS3 compliant, making it a viable option for designers who require a reliable and compliant power solution.

LM2931AV50 Features

• Fixed Output Voltage: The LM2931AV50 provides a stable 5V output, ensuring consistent power supply to connected devices.
• High Input Voltage Range: With a maximum input voltage of 26V, this regulator can handle a wide range of input voltages, making it versatile for various applications.
• Low Dropout Voltage: The maximum dropout voltage of 0.6V at 100mA ensures efficient operation even when the input voltage is close to the output voltage.
• Protection Features: The regulator includes current limiting and thermal shutdown features, which protect the device from overcurrent and overheating, ensuring reliable operation.
• Low Quiescent Current: The quiescent current of 1mA minimizes power consumption, making the regulator suitable for low-power applications.
• High PSRR: The regulator offers a high power supply rejection ratio (PSRR) of 75dB at 120Hz, effectively filtering out noise from the input power supply.
• Compliance: The LM2931AV50 is REACH unaffected and ROHS3 compliant, ensuring it meets environmental and safety standards.
• Packaging: The Through Hole TO220AB package provides a robust and reliable mechanical structure, suitable for a wide range of applications.

LM2931AV50 Applications

The LM2931AV50 is ideal for applications that require a stable 5V power supply with a maximum output current of 100mA. Some specific use cases include:

• Embedded Systems: Providing a stable power supply for microcontrollers and other low-power embedded devices.
• Consumer Electronics: Powering small electronic devices such as portable radios, MP3 players, and other handheld gadgets.
• Industrial Applications: Supplying power to sensors, actuators, and other low-power components in industrial control systems.
• Telecommunications: Powering low-power modules in communication equipment, such as modems and routers.
• Automotive Electronics: Providing a stable power source for various automotive electronic components, such as infotainment systems and electronic control units.

Conclusion of LM2931AV50

The LM2931AV50 is a reliable and versatile linear regulator that offers a stable 5V output with a maximum current of 100mA. Its low dropout voltage, high PSRR, and protection features make it an excellent choice for applications requiring efficient and reliable power management. Despite being marked as obsolete, its compliance with REACH and ROHS3 standards ensures it remains a viable option for designers. The Through Hole TO220AB package provides a robust mechanical structure, making it suitable for a wide range of applications, from embedded systems to industrial and automotive electronics.