onsemi

MC78FC33HT1G

MC78FC33HT1G Description

The MC78FC33HT1G is a linear voltage regulator designed by onsemi, offering a fixed output voltage of 3.3V and a maximum output current of 65mA. This regulator is housed in a Surface Mount SOT89-3 package, making it suitable for compact and space-constrained applications. Despite its small form factor, the MC78FC33HT1G delivers robust performance with a maximum input voltage of 10V and a dropout voltage of 0.7V at 40mA. It features over-current protection, ensuring reliable operation under varying load conditions. The regulator also boasts a low quiescent current of 3.3 µA, making it ideal for low-power applications. Although the product is now obsolete, its technical specifications and performance characteristics still make it a notable choice for specific applications.

MC78FC33HT1G Features

• Fixed Output Voltage: The MC78FC33HT1G provides a stable 3.3V output, ensuring consistent power supply for sensitive electronic components.
• Low Dropout Voltage: With a maximum dropout voltage of 0.7V at 40mA, this regulator can maintain its output voltage even when the input voltage is close to the output voltage, enhancing efficiency.
• Over-Current Protection: This feature safeguards the regulator and connected components from damage due to excessive current, enhancing reliability and longevity.
• Low Quiescent Current: The 3.3 µA quiescent current ensures minimal power consumption during operation, making it suitable for battery-powered and low-power applications.
• Surface Mount Packaging: The SOT89-3 package allows for easy integration into compact designs, facilitating surface mount assembly processes.
• Moisture Sensitivity Level 1: The regulator is unaffected by moisture, making it suitable for a wide range of environmental conditions.
• REACH Compliance: The MC78FC33HT1G is REACH unaffected, ensuring compliance with environmental and safety regulations.

MC78FC33HT1G Applications

The MC78FC33HT1G is well-suited for a variety of applications where a stable 3.3V supply and low power consumption are critical. Some specific use cases include:

• Embedded Systems: Ideal for powering microcontrollers and other low-power embedded devices that require a stable 3.3V supply.
• Portable Devices: Suitable for battery-operated devices where low quiescent current and low dropout voltage are essential for maximizing battery life.
• Communication Modules: Provides a reliable power source for RF modules and other communication components that demand a consistent voltage supply.
• Industrial Control: Can be used in control systems where space constraints and reliability are key considerations.

Conclusion of MC78FC33HT1G

The MC78FC33HT1G, despite being an obsolete product, remains a reliable choice for applications requiring a stable 3.3V output and low power consumption. Its low dropout voltage and over-current protection features make it particularly advantageous in environments where efficiency and reliability are paramount. The Surface Mount SOT89-3 package ensures ease of integration into compact designs, while its low quiescent current makes it ideal for battery-powered devices. Although newer alternatives may be available, the MC78FC33HT1G continues to offer a robust solution for specific applications in the electronics industry.