STMicroelectronics

L79L12ACD

L79L12ACD Description

The L79L12ACD is a fixed negative output voltage regulator designed for a wide range of applications requiring a stable -12V supply. Manufactured by STMicroelectronics, this device offers a robust and reliable solution for power management needs. The L79L12ACD features a maximum output current of 100mA, making it suitable for low to medium current applications. It operates within a wide temperature range of 0°C to 125°C, ensuring consistent performance across various environmental conditions.

L79L12ACD Features

• Output Type: Fixed negative output voltage of -12V.
• Output Current: Capable of delivering up to 100mA, ideal for applications requiring stable power supply.
• Number of Regulators: Single regulator design simplifies circuit design and reduces complexity.
• Supply Current: Maximum supply current of 6.5mA ensures efficient power usage.
• Quiescent Current: Low quiescent current of 6mA minimizes power consumption during standby.
• PSRR: High power supply rejection ratio of 42dB at 120Hz ensures excellent noise filtering.
• Protection Features: Over-temperature and short-circuit protection enhance reliability and protect against common faults.
• Mounting Type: Surface mount technology (SMT) allows for compact and efficient PCB design.
• Package: Supplied in a tube package, facilitating easy handling and integration.
• Compliance: ROHS3 compliant and REACH unaffected, ensuring environmental and regulatory standards are met.
• Moisture Sensitivity Level: MSL 3 (168 Hours) ensures the device is suitable for various manufacturing processes.

L79L12ACD Applications

The L79L12ACD is well-suited for applications requiring a stable -12V supply. Its low quiescent current and high PSRR make it ideal for precision analog circuits, where noise and power efficiency are critical. The over-temperature and short-circuit protection features make it a reliable choice for industrial and automotive applications, where robustness and reliability are paramount.

Specific use cases include:

• Precision Analog Circuits: Ideal for applications requiring low noise and stable power supply, such as precision amplifiers and sensors.
• Industrial Equipment: Suitable for industrial control systems and automation equipment, where reliability and efficiency are key.
• Automotive Electronics: Applicable in automotive applications where a stable -12V supply is needed for various electronic components.
• Telecommunications: Can be used in telecommunication equipment for stable power supply to critical components.

Conclusion of L79L12ACD

The L79L12ACD from STMicroelectronics is a versatile and reliable fixed negative voltage regulator, offering a stable -12V output with a maximum current of 100mA. Its low quiescent current, high PSRR, and robust protection features make it an excellent choice for a variety of applications, including precision analog circuits, industrial equipment, automotive electronics, and telecommunications. Despite being marked as obsolete, the L79L12ACD remains a valuable component for applications where its unique features and performance benefits are required.