STMicroelectronics

L79L12ABD-R

L79L12ABD-R Description

The L79L12ABD-R is a fixed linear voltage regulator designed by STMicroelectronics, offering a regulated negative output voltage of -12V with a maximum output current of 100mA. This regulator is housed in an 8SO package and is designed for surface mount applications. Despite being marked as obsolete, the L79L12ABD-R remains a reliable choice for applications requiring a stable negative voltage supply. It features a maximum supply current of 6.5mA and a quiescent current of 6mA, ensuring efficient power usage. The regulator also includes over-temperature and short-circuit protection, enhancing its reliability and safety in various electronic circuits.

L79L12ABD-R Features

• Output Type: Fixed negative voltage output, ensuring stable regulation.
• Output Current: Capable of delivering up to 100mA, suitable for a wide range of low-power applications.
• Output Configuration: Negative output voltage, ideal for circuits requiring a negative supply rail.
• Supply Current: Maximum of 6.5mA, ensuring minimal power consumption.
• Protection Features: Over-temperature and short-circuit protection, safeguarding the regulator and connected components.
• Power Supply Rejection Ratio (PSRR): 42dB at 120Hz, providing excellent noise rejection and stable output voltage.
• Moisture Sensitivity Level (MSL): Level 3 (168 hours), suitable for standard manufacturing processes.
• Compliance: ROHS3 compliant and REACH unaffected, ensuring environmental and regulatory standards.
• Packaging: Tape & Reel (TR), facilitating automated assembly processes.

L79L12ABD-R Applications

The L79L12ABD-R is ideal for applications requiring a stable -12V supply, such as:

• Analog Circuits: Providing a clean and stable negative voltage rail for operational amplifiers, analog-to-digital converters, and other sensitive analog components.
• Audio Equipment: Ensuring low noise and stable power supply for audio amplifiers and preamplifiers.
• Medical Devices: Suitable for low-power medical equipment where a stable negative supply is required.
• Telecommunications: Used in various telecom equipment for stable power supply to analog components.
• Industrial Control Systems: Providing reliable power supply for control circuits and sensors.

Conclusion of L79L12ABD-R

The L79L12ABD-R, despite its obsolete status, remains a robust and reliable choice for applications requiring a stable -12V supply. Its low quiescent current and efficient power usage make it suitable for low-power applications, while its protection features ensure reliability and safety. The regulator's compliance with environmental and regulatory standards ensures its suitability for modern manufacturing processes. For engineers and designers looking for a dependable negative voltage regulator, the L79L12ABD-R is a proven solution that offers stability, efficiency, and protection in a compact surface mount package.