onsemi

LM2931AT-5.0

LM2931AT-5.0 Description

The LM2931AT-5.0 is a fixed positive linear voltage regulator designed by onsemi, offering a stable 5V output with a maximum output current of 100mA. This regulator is housed in a TO220AB package, making it suitable for through-hole mounting. It features a maximum input voltage of 26V and a dropout voltage of 0.6V at 100mA, ensuring efficient operation even at lower input-to-output voltage differentials. The LM2931AT-5.0 is equipped with over-current and over-temperature protection, enhancing its reliability and safety in various applications. Despite being marked as obsolete, it remains a viable option for legacy systems and specific applications where its unique features are advantageous.

LM2931AT-5.0 Features

• Fixed Positive Output Voltage: The LM2931AT-5.0 provides a stable 5V output, ideal for powering a wide range of electronic devices and circuits.
• High Input Voltage Range: With a maximum input voltage of 26V, this regulator can handle a broad range of input voltages, making it versatile for various power supply designs.
• Low Dropout Voltage: At 0.6V dropout voltage at 100mA, the LM2931AT-5.0 ensures efficient power conversion, particularly useful in applications where the input voltage is close to the desired output voltage.
• Over-Current and Over-Temperature Protection: These protection features safeguard the regulator and connected circuits from damage due to excessive current or temperature, enhancing overall system reliability.
• Low Quiescent Current: The regulator operates with a quiescent current of 1mA, minimizing power consumption during standby or low-load conditions.
• High PSRR: With a power supply rejection ratio (PSRR) of 90dB at 120Hz, the LM2931AT-5.0 effectively filters out noise from the input power supply, ensuring clean and stable output voltage.
• Through-Hole Mounting: The TO220AB package is designed for through-hole mounting, providing robust mechanical stability and ease of integration into printed circuit boards.

LM2931AT-5.0 Applications

The LM2931AT-5.0 is well-suited for a variety of applications where a stable 5V supply is required. Some specific use cases include:

• Embedded Systems: Ideal for powering microcontrollers, sensors, and other low-power embedded devices.
• Communication Equipment: Provides a reliable power source for communication modules and peripherals.
• Consumer Electronics: Suitable for applications such as portable devices, where a stable and efficient power supply is crucial.
• Industrial Control Systems: Can be used in industrial automation and control systems where robustness and reliability are paramount.
• Automotive Electronics: Useful in automotive applications where the input voltage can vary significantly, and a stable output voltage is essential.

Conclusion of LM2931AT-5.0

The LM2931AT-5.0 is a robust and reliable linear voltage 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 stable power supply. Although marked as obsolete, the LM2931AT-5.0 remains a valuable component for legacy systems and specific applications where its unique features provide a significant advantage. For designers and engineers seeking a dependable power solution, the LM2931AT-5.0 is a proven and effective option.