onsemi

MC33275D-3.3G

MC33275D-3.3G Description

The MC33275D-3.3G is a linear voltage regulator designed by onsemi, offering a fixed output voltage of 3.3V and a maximum output current of 300mA. This regulator is housed in an 8-SOIC package, making it suitable for surface mount applications. Despite being marked as obsolete, it remains a reliable choice for power management in various electronic systems. The regulator features a maximum input voltage of 13V and a dropout voltage of 0.5V at 300mA, ensuring efficient operation even at low input-to-output differentials. It also includes over-current and over-temperature protection, enhancing its robustness and reliability.

MC33275D-3.3G Features

• Fixed Output Voltage: Provides a stable 3.3V output, ideal for applications requiring precise voltage regulation.
• High Input Voltage Range: Capable of handling input voltages up to 13V, offering flexibility in power supply design.
• Low Dropout Voltage: With a maximum dropout voltage of 0.5V at 300mA, it ensures efficient power conversion even at low input-to-output differentials.
• Over-Current and Over-Temperature Protection: Built-in protection features safeguard the regulator and connected circuits from damage due to excessive current or temperature.
• Low Quiescent Current: Consumes only 200 µA in quiescent state, making it energy-efficient for low-power applications.
• High Power Supply Rejection Ratio (PSRR): Achieves 75dB at 120Hz, ensuring minimal noise and ripple in the output voltage.
• Surface Mount Compatibility: The 8-SOIC package is suitable for surface mount technology, facilitating compact and reliable PCB designs.
• Compliance and Safety: ROHS3 compliant and REACH unaffected, ensuring environmental and safety standards are met.

MC33275D-3.3G Applications

The MC33275D-3.3G is well-suited for a variety of applications where stable and efficient power regulation is required. Its fixed 3.3V output makes it ideal for powering microcontrollers, digital logic circuits, and other low-voltage devices. The regulator's ability to handle input voltages up to 13V and its low dropout voltage feature make it suitable for battery-powered systems, where the input voltage can vary significantly. Additionally, its low quiescent current and high PSRR ensure minimal power loss and noise, making it a reliable choice for sensitive electronic applications.

Conclusion of MC33275D-3.3G

The MC33275D-3.3G, despite being marked as obsolete, remains a robust and reliable linear voltage regulator for applications requiring a fixed 3.3V output. Its low dropout voltage, high PSRR, and built-in protection features make it stand out from similar models. The regulator's compatibility with surface mount technology and its compliance with environmental standards further enhance its appeal. While newer alternatives may exist, the MC33275D-3.3G continues to offer a dependable solution for power management in various electronic systems.