onsemi

MC7812CD2TR4

MC7812CD2TR4 Description

The MC7812CD2TR4 is a fixed-output linear regulator designed for applications requiring a stable 12V output at a maximum current of 1A. Manufactured by onsemi, this device is part of the Power Management Integrated Circuits (PMIC) category and is housed in a Surface Mount D2PAK package, making it suitable for compact and high-density designs. Despite its obsolescence status, the MC7812CD2TR4 remains a reliable choice for legacy systems and specific applications where its unique features are advantageous.

MC7812CD2TR4 Features

• Fixed Output Voltage: The MC7812CD2TR4 provides a stable 12V output, ensuring consistent power delivery to connected devices.
• High Input Voltage Range: With a maximum input voltage of 35V, this regulator can handle a wide range of input voltages, making it versatile for various power supply configurations.
• Low Dropout Voltage: The maximum dropout voltage of 2V at 1A (typical) allows the regulator to maintain efficiency even at low input-to-output voltage differentials.
• Low Quiescent Current: A quiescent current of 6.5 mA ensures minimal power consumption during operation, enhancing overall system efficiency.
• High Power Supply Rejection Ratio (PSRR): The 60dB PSRR at 1kHz helps in filtering out noise from the input power supply, ensuring clean output voltage.
• Protection Features: Over-temperature and short-circuit protection features safeguard the regulator and connected components from damage under adverse conditions.
• Wide Operating Temperature Range: The device operates reliably within a temperature range of 0°C to 125°C, making it suitable for industrial and automotive applications.
• Moisture Sensitivity Level (MSL): MSL 1 (Unlimited) indicates that the component is not sensitive to moisture, simplifying handling and storage requirements.
• Packaging: Available in a Tape & Reel (TR) package, the MC7812CD2TR4 is ideal for automated assembly processes, ensuring consistent and reliable placement during manufacturing.

MC7812CD2TR4 Applications

The MC7812CD2TR4 is well-suited for a variety of applications where a stable 12V power supply is required. Key applications include:

• Automotive Electronics: Ideal for powering electronic control units (ECUs) and other automotive systems that require a stable 12V supply.
• Industrial Control Systems: Suitable for powering sensors, actuators, and control modules in industrial environments.
• Telecommunications: Can be used in base stations and other telecom equipment where a reliable power source is crucial.
• Consumer Electronics: Applicable in devices such as routers, modems, and set-top boxes that require a stable 12V supply.
• Legacy Systems: Given its obsolescence status, the MC7812CD2TR4 is particularly useful in maintaining and repairing legacy systems where modern alternatives may not be compatible.

Conclusion of MC7812CD2TR4

The MC7812CD2TR4, despite being marked as obsolete, remains a robust and reliable linear regulator for applications requiring a stable 12V output. Its low dropout voltage, high PSRR, and comprehensive protection features make it stand out in environments where power efficiency and reliability are paramount. The wide operating temperature range and moisture sensitivity level further enhance its suitability for demanding industrial and automotive applications. For engineers and designers working with legacy systems or specific applications where the MC7812CD2TR4's unique features are advantageous, this regulator continues to be a viable and effective solution.