onsemi

MC79L12ABDG

MC79L12ABDG Description

The MC79L12ABDG is a linear regulator IC designed for applications requiring a stable -12V output voltage with a fixed output configuration. Manufactured by onsemi, this device is part of the Power Management Integrated Circuits (PMIC) category and is housed in an 8-pin SOIC package. The regulator is designed for surface mount applications and offers a maximum output current of 100mA. It features a low dropout voltage of 1.7V at 40mA (typical), ensuring efficient power delivery even under varying load conditions.

MC79L12ABDG Features

• Output Voltage: Fixed at -12V, providing a stable power supply for various electronic components.
• Output Current: Capable of delivering up to 100mA, making it suitable for low to medium power applications.
• Low Dropout Voltage: With a maximum dropout voltage of 1.7V at 40mA (typical), the MC79L12ABDG ensures efficient power conversion, especially in applications where the input voltage is close to the output voltage.
• Power Supply Rejection Ratio (PSRR): Achieves 42dB at 120Hz, effectively filtering out noise from the input supply and maintaining clean output voltage.
• Protection Features: Equipped with over-temperature and short-circuit protection, enhancing the reliability and robustness of the regulator in various operating conditions.
• Mounting Type: Surface mount, ideal for compact and space-constrained designs.
• Package: Supplied in a tube package, facilitating easy handling and integration into production lines.
• Moisture Sensitivity Level (MSL): Rated at MSL 1 (Unlimited), ensuring the device is suitable for a wide range of environmental conditions without the need for special handling precautions.

MC79L12ABDG Applications

The MC79L12ABDG is well-suited for a variety of applications where a reliable and stable -12V power supply is required. Some specific use cases include:

• Telecommunications Equipment: Providing stable power to analog circuits and sensors in telecom infrastructure.
• Industrial Control Systems: Ensuring reliable power delivery to control modules and actuators in industrial environments.
• Medical Devices: Supplying power to critical components in medical equipment where stability and reliability are paramount.
• Consumer Electronics: Used in devices requiring a stable -12V supply, such as audio amplifiers and other analog circuits.

Conclusion of MC79L12ABDG

The MC79L12ABDG from onsemi is a robust linear regulator designed to provide a stable -12V output with a maximum current of 100mA. Its low dropout voltage and high PSRR make it an efficient and reliable choice for applications where power efficiency and noise rejection are critical. The inclusion of over-temperature and short-circuit protection further enhances its reliability, making it suitable for a wide range of industrial and consumer applications. Despite being marked as obsolete, the MC79L12ABDG remains a viable option for designers seeking a proven and reliable power management solution.