onsemi

LM78M24CT

LM78M24CT Description

The LM78M24CT is a fixed positive linear voltage regulator designed to deliver a stable output voltage of 24V with a maximum output current of 500mA. Manufactured by onsemi, this regulator is housed in a TO-220-3 package, making it suitable for through-hole mounting. Despite being marked as obsolete, the LM78M24CT continues to offer reliable performance with a maximum input voltage of 40V and a dropout voltage of 2V at 500mA (typical). It features over-temperature and short-circuit protection, ensuring robust operation within an operating temperature range of 0°C to 125°C. The regulator's quiescent current is 6mA, and it provides a power supply rejection ratio (PSRR) of 70dB at 120Hz. With a moisture sensitivity level (MSL) of 1 (unlimited), the LM78M24CT is well-suited for applications requiring high reliability and stability.

LM78M24CT Features

• Fixed Output Voltage: The LM78M24CT provides a stable 24V output, ensuring consistent power supply to connected devices.
• High Input Voltage Range: With a maximum input voltage of 40V, this regulator can handle a wide range of input voltages, making it versatile for various power supply designs.
• Low Dropout Voltage: The dropout voltage of 2V at 500mA (typical) allows the regulator to maintain efficiency even at lower input-to-output voltage differentials.
• Over-Temperature and Short-Circuit Protection: These protection features enhance the reliability and safety of the regulator, safeguarding it against thermal overload and short-circuit conditions.
• Low Quiescent Current: The 6mA quiescent current ensures minimal power consumption during operation, contributing to overall system efficiency.
• High PSRR: The 70dB PSRR at 120Hz helps in filtering out noise from the power supply, resulting in a cleaner output voltage.
• Wide Operating Temperature Range: The regulator operates reliably from 0°C to 125°C, making it suitable for applications in various environmental conditions.
• Through-Hole Mounting: The TO-220-3 package allows for easy integration into printed circuit boards using through-hole technology.

LM78M24CT Applications

The LM78M24CT is ideal for a variety of applications where a stable 24V power supply is required. Some specific use cases include:

• Industrial Control Systems: Providing a stable power supply for sensors, actuators, and control modules in industrial environments.
• Telecommunications Equipment: Ensuring reliable power delivery to communication devices and infrastructure components.
• Medical Devices: Offering a stable power source for medical equipment that requires precise voltage regulation.
• Automotive Electronics: Powering electronic components in vehicles, such as ECUs, sensors, and control units.
• Consumer Electronics: Supplying power to devices like routers, modems, and other peripherals that require a stable 24V supply.

Conclusion of LM78M24CT

The LM78M24CT is a robust and reliable fixed positive linear voltage regulator that offers a stable 24V output with a maximum current of 500mA. Its low dropout voltage, over-temperature and short-circuit protection, and wide operating temperature range make it an excellent choice for applications requiring high reliability and stability. Despite its obsolete status, the LM78M24CT continues to provide excellent performance and is well-suited for a variety of industrial, telecommunications, medical, automotive, and consumer electronics applications.