ON Semiconductor MC7818CTG Positive Voltage Regulator, 1A, TO220-3

The ON Semiconductor MC7818CTG is a monolithic positive voltage regulator providing a fixed 18V nominal output, ideal for a broad range of electronic applications. This TO220-3 package device is specifically engineered for local and on-card regulation, delivering reliable performance in automotive, power management, and industrial systems.

With built-in internal current limiting, thermal shutdown, and safe-area compensation, the regulator ensures robust protection against overload and excessive temperature conditions, enhancing system safety and longevity. When adequately heat-sinked, it can deliver output currents exceeding 1A, making it suitable for various power supply designs. Although designed primarily as a fixed voltage regulator, the device can be used with external components to obtain adjustable voltages and currents, offering flexibility in circuit design.

Key Features

• Fixed 18V nominal output voltage
• Output current up to 1A (with adequate heat sinking)
• Internal current limiting, thermal shutdown, and safe-area compensation
• No external components required for fixed voltage operation
• Through-hole mounting in a TO220-3 package with 3 pins
• Wide operating temperature range from 0°C to 125°C
• Input voltage range from 20V to 35V

Applications

• Automotive electronics
• Power management systems
• Industrial control circuits
• Local on-card regulation

The MC7818CTG delivers dependable voltage regulation, combining performance and protection for a wide array of electronic devices.