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MC78L33F-TP

MC78L33F-TP Description

The MC78L33F-TP is a fixed positive linear voltage regulator designed by Micro Commercial Components (MCC) to deliver a stable 3.3V output voltage. This regulator is part of the broader category of Linear & Switching Voltage Regulators and is housed in a surface-mount package, specifically in a Tape & Reel (TR) format. Despite its obsolete status, the MC78L33F-TP remains a reliable choice for applications requiring a fixed output voltage with robust protection features.

MC78L33F-TP Features

The MC78L33F-TP offers several key technical specifications that make it a versatile component for various electronic designs:

• Output Voltage: The regulator provides a fixed output voltage of 3.3V, ensuring consistent power supply to connected devices.
• Input Voltage Range: With a maximum input voltage of 30V, the MC78L33F-TP can accommodate a wide range of input sources, making it suitable for diverse applications.
• Output Current: It can supply up to 100mA of current, which is sufficient for many low-to-medium power applications.
• Quiescent Current: The regulator has a low quiescent current of 6mA, which helps in minimizing power consumption during operation.
• Power Supply Rejection Ratio (PSRR): The PSRR of 49dB at 120Hz ensures that the regulator can effectively filter out noise from the input power supply, resulting in a cleaner output voltage.
• Dropout Voltage: The maximum dropout voltage of 2.5V at 40mA allows the regulator to maintain efficiency even when the input voltage is close to the output voltage.
• Protection Features: The MC78L33F-TP includes over-current, over-temperature, and short-circuit protection, which enhances its reliability and longevity in various operating conditions.
• Compliance: The regulator is ROHS3 compliant, ensuring it meets environmental standards and is suitable for use in a wide range of industries.
• Packaging: The surface-mount package type facilitates easy integration into modern PCB designs, supporting compact and efficient circuit layouts.

MC78L33F-TP Applications

The MC78L33F-TP is ideal for applications where a stable 3.3V supply is required. Some specific use cases include:

• Microcontroller Power Supplies: Providing a stable power source for microcontrollers and other low-power embedded systems.
• Sensor Circuits: Ensuring reliable operation of sensors that require a precise voltage level.
• Communication Modules: Supplying power to communication modules such as Wi-Fi, Bluetooth, and Zigbee devices.
• Portable Devices: Suitable for battery-operated devices where low quiescent current and efficient power regulation are crucial.
• Industrial Control Systems: Used in control systems where a stable and protected power supply is necessary to ensure reliable operation.

Conclusion of MC78L33F-TP

The MC78L33F-TP, despite being obsolete, remains a robust and reliable choice for applications requiring a fixed 3.3V output. Its low quiescent current, wide input voltage range, and comprehensive protection features make it a valuable component in various electronic designs. While newer alternatives may offer additional features, the MC78L33F-TP's proven performance and compliance with industry standards ensure it continues to be a viable option for many applications. For engineers and designers seeking a dependable voltage regulator, the MC78L33F-TP is a worthy consideration.