onsemi

MC78M18CTG

MC78M18CTG Description

The MC78M18CTG is a linear voltage regulator designed by onsemi, featuring a fixed output voltage of 18V and a maximum output current of 500mA. This regulator is housed in a TO-220AB package, making it suitable for through-hole mounting. It operates within an input voltage range up to 35V and is designed to provide a stable and reliable power supply for various electronic applications. The device is characterized by its positive output configuration and includes protection features such as over-temperature and short-circuit protection to ensure robustness and reliability. The MC78M18CTG operates within a temperature range of 0°C to 125°C, making it suitable for industrial and commercial applications. Despite being marked as obsolete, it maintains compliance with REACH and RoHS3 standards, ensuring environmental sustainability and regulatory adherence.

MC78M18CTG Features

• Fixed Output Voltage: The MC78M18CTG provides a stable 18V output voltage, ensuring consistent power supply to connected devices.
• High Input Voltage Range: With a maximum input voltage of 35V, this regulator can handle a wide range of input voltages, making it versatile for various power supply scenarios.
• Over-Temperature and Short-Circuit Protection: These protection features enhance the reliability and durability of the regulator, safeguarding it against thermal runaway and short-circuit conditions.
• High PSRR: The regulator boasts a Power Supply Rejection Ratio (PSRR) of 70dB at 120Hz, effectively filtering out noise from the input power supply and ensuring a clean output voltage.
• Wide Operating Temperature Range: The MC78M18CTG operates reliably from 0°C to 125°C, making it suitable for applications in diverse environmental conditions.
• Compliance with Industry Standards: The device is REACH unaffected and RoHS3 compliant, ensuring it meets environmental and regulatory standards for electronic components.
• Through-Hole Mounting: The TO-220AB package allows for easy integration into PCB designs using through-hole mounting techniques.

MC78M18CTG Applications

The MC78M18CTG is ideal for applications requiring a stable 18V power supply with a maximum current of 500mA. Its robust design and protection features make it suitable for:

• Industrial Control Systems: Providing stable power to control circuits and sensors in industrial environments.
• Consumer Electronics: Powering devices such as audio amplifiers, LED drivers, and other consumer electronics that require a fixed 18V supply.
• Telecommunications: Supplying power to communication equipment and network devices that operate within the specified voltage and current range.
• Automotive Electronics: Ensuring reliable power supply to electronic components in automotive systems, given its wide operating temperature range and protection features.

Conclusion of MC78M18CTG

The MC78M18CTG is a reliable and versatile linear voltage regulator, offering a fixed 18V output with a maximum current of 500mA. Its high input voltage range, robust protection features, and wide operating temperature range make it suitable for a variety of applications in industrial, consumer, and automotive sectors. Despite being marked as obsolete, its compliance with REACH and RoHS3 standards ensures it remains a viable option for environmentally conscious designs. The through-hole mounting package further simplifies integration into existing and new PCB designs. For applications requiring a stable and reliable 18V power supply, the MC78M18CTG is an excellent choice.