onsemi

MC7818ACTG

MC7818ACTG Description

The MC7818ACTG is a linear voltage regulator designed for applications requiring a stable and reliable power supply. Manufactured by onsemi, this device offers a fixed output voltage of 18V and a maximum output current of 1A. It is housed in a TO220AB package, making it suitable for through-hole mounting. The regulator operates within an input voltage range up to 35V and features a dropout voltage of 2V at 1A, ensuring efficient performance even at low input-to-output voltage differentials. With a quiescent current of 6 mA and a power supply rejection ratio (PSRR) of 57dB at 120Hz, the MC7818ACTG provides excellent noise suppression and stability. The device also includes over-temperature and short-circuit protection, enhancing its robustness and reliability. Despite being marked as obsolete, the MC7818ACTG remains a viable option for legacy systems and applications where its specific characteristics are required.

MC7818ACTG Features

• Fixed Output Voltage: The MC7818ACTG provides a stable 18V output, ensuring consistent power delivery to connected devices.
• High Input Voltage Range: With a maximum input voltage of 35V, this regulator can handle a wide range of input conditions, making it versatile for various applications.
• Low Dropout Voltage: The 2V dropout voltage at 1A ensures efficient operation, minimizing power loss and heat generation.
• Robust Protection Features: Over-temperature and short-circuit protection safeguard the device and connected circuits from damage.
• Low Quiescent Current: A quiescent current of 6 mA minimizes power consumption during standby or low-load conditions.
• High PSRR: The 57dB PSRR at 120Hz effectively reduces noise and ripple, ensuring clean power output.
• Wide Operating Temperature Range: The device operates reliably from 0°C to 125°C, making it suitable for industrial and automotive applications.
• Through-Hole Mounting: The TO220AB package is ideal for applications requiring robust mechanical stability and ease of integration.
• Compliance: The MC7818ACTG is REACH unaffected and RoHS3 compliant, meeting environmental and regulatory standards.

MC7818ACTG Applications

The MC7818ACTG is well-suited for a variety of applications where a stable and reliable 18V power supply is required. Some specific use cases include:

• Industrial Control Systems: Providing stable power to sensors, actuators, and control modules in industrial environments.
• Automotive Electronics: Supplying power to electronic control units (ECUs) and other automotive systems that require a regulated 18V supply.
• Telecommunications: Powering communication modules and devices that operate within the specified voltage range.
• Medical Equipment: Ensuring reliable power delivery to medical devices that require precise voltage regulation.
• Legacy Systems: Maintaining compatibility with older systems that rely on the specific characteristics of the MC7818ACTG.

Conclusion of MC7818ACTG

The MC7818ACTG is a reliable linear voltage regulator that offers a stable 18V output with robust protection features and efficient performance. Despite its obsolete status, it remains a valuable component for applications requiring its specific technical attributes. Its low dropout voltage, high PSRR, and wide operating temperature range make it suitable for demanding industrial and automotive environments. The through-hole mounting and compliance with environmental standards further enhance its appeal. For systems where the MC7818ACTG's unique features are essential, it continues to be a reliable choice.