onsemi

MC7818AECT

MC7818AECT Description

The MC7818AECT is a linear voltage regulator designed for applications requiring a stable and reliable power supply. Manufactured by onsemi, this regulator offers a fixed output voltage of 18V and a maximum output current of 1A. It is housed in a TO-220-3 package, which is ideal for through-hole mounting and provides robust mechanical stability and thermal performance.

Key specifications include a maximum input voltage of 35V, a dropout voltage of 2V at 1A (typical), and a quiescent current of 6 mA. The regulator operates within a temperature range of 0°C to 125°C, making it suitable for a wide range of industrial and consumer applications. Additionally, the MC7818AECT features over-temperature and short-circuit protection, ensuring safe operation under various conditions.

MC7818AECT Features

• Fixed Output Voltage: Provides a stable 18V output, ensuring consistent power delivery.
• High Input Voltage Range: Capable of handling input voltages up to 35V, offering flexibility in power supply design.
• Low Dropout Voltage: With a typical dropout voltage of 2V at 1A, the MC7818AECT maintains efficiency even at lower input-to-output voltage differentials.
• Low Quiescent Current: Consumes only 6 mA in quiescent state, minimizing power loss and enhancing overall efficiency.
• Wide Operating Temperature Range: Suitable for use in environments ranging from 0°C to 125°C, making it ideal for both industrial and consumer applications.
• Protection Features: Over-temperature and short-circuit protection ensure reliable operation and protect against potential faults.
• Through-Hole Mounting: The TO-220-3 package is designed for through-hole mounting, providing mechanical stability and ease of integration into existing designs.
• High PSRR: A power supply rejection ratio (PSRR) of 57dB at 120Hz ensures minimal noise and ripple in the output voltage.

MC7818AECT Applications

The MC7818AECT is well-suited for a variety of applications where a stable and reliable power supply is critical. Its fixed 18V output and robust protection features make it ideal for:

• Industrial Control Systems: Provides stable power to control boards and sensors in harsh industrial environments.
• Consumer Electronics: Suitable for powering devices that require a consistent 18V supply, such as certain types of monitors, printers, and other peripherals.
• Telecommunications: Ideal for powering communication equipment that operates within the specified voltage and current ranges.
• Automotive Applications: Can be used in automotive systems where a stable power supply is required, such as in-vehicle infotainment systems and electronic control units.

Conclusion of MC7818AECT

The MC7818AECT is a reliable and efficient linear voltage regulator designed to meet the demands of various industrial and consumer applications. Its fixed 18V output, wide input voltage range, and robust protection features make it a versatile choice for engineers and designers. While the product is now obsolete, its unique combination of low dropout voltage, low quiescent current, and high PSRR ensures that it remains a valuable component for applications requiring a stable and efficient power supply. For those seeking a reliable and efficient power management solution, the MC7818AECT is a proven choice.