onsemi

MC79L12ABP

MC79L12ABP Description

The MC79L12ABP is a linear voltage regulator designed to provide a fixed -12V output voltage with a maximum output current of 100mA. Manufactured by onsemi, this regulator is housed in a Through Hole TO92-3 package, making it suitable for a variety of applications where a negative voltage supply is required. Despite being marked as obsolete, the MC79L12ABP remains a reliable choice for engineers and designers due to its robust performance and specific feature set.

MC79L12ABP Features

• Output Type: Fixed -12V output voltage ensures stable power supply for downstream components.
• Output Current: Capable of delivering up to 100mA, the MC79L12ABP is well-suited for low to medium current applications.
• Number of Regulators: Single regulator design simplifies circuit integration and reduces component count.
• Output Configuration: Negative output configuration is ideal for applications requiring a negative voltage rail.
• Voltage Dropout: A maximum dropout voltage of 1.7V at 40mA (typical) ensures efficient operation even at lower input voltages.
• Power Supply Rejection Ratio (PSRR): Achieves 42dB at 120Hz, providing excellent noise filtering and stability.
• Protection Features: Over-temperature and short-circuit protection enhance reliability and safeguard against potential faults.
• Moisture Sensitivity Level (MSL): MSL 1 (Unlimited) indicates the device is not sensitive to moisture, suitable for a wide range of environmental conditions.
• Compliance: REACH Unaffected status ensures compliance with environmental regulations.
• Packaging: Bulk packaging is convenient for large-scale production and inventory management.

MC79L12ABP Applications

The MC79L12ABP is ideal for applications that require a stable -12V supply. Some specific use cases include:

• Analog Circuits: Provides a clean and stable negative voltage supply for operational amplifiers, ADCs, and DACs.
• Communication Systems: Powers negative voltage rails in telecommunication equipment and modems.
• Medical Devices: Ensures reliable operation in medical monitoring equipment and diagnostic instruments.
• Industrial Controls: Suitable for PLCs and other industrial control systems requiring negative voltage.
• Consumer Electronics: Used in audio equipment and other consumer devices that require a negative voltage supply.

Conclusion of MC79L12ABP

The MC79L12ABP, despite its obsolete status, remains a valuable component in the electronics industry due to its reliable performance and specific feature set. Its fixed -12V output, combined with robust protection features and a low dropout voltage, makes it an excellent choice for applications requiring a stable negative voltage supply. The Through Hole TO92-3 package ensures ease of integration into various circuit designs. For engineers and designers seeking a dependable and efficient negative voltage regulator, the MC79L12ABP is a solid option.