Texas Instruments

LM79M12CT/NOPB

LM79M12CT/NOPB Description

The LM79M12CT/NOPB is a fixed negative output linear voltage regulator designed by Texas Instruments. This device is part of the Linear & Switching Voltage Regulators category and is known for its robust performance and reliability. Despite being marked as obsolete, the LM79M12CT/NOPB remains a viable option for applications requiring a stable -12V output with a maximum current capability of 500mA. The regulator is housed in a Through Hole TO220-3 package, making it suitable for a variety of industrial and commercial applications.

LM79M12CT/NOPB Features

The LM79M12CT/NOPB offers several key features that make it a reliable choice for voltage regulation needs:

• Fixed Negative Output Configuration: The regulator provides a stable -12V output, ideal applications for requiring a negative voltage supply.
• High Current Capability: With a maximum output current of 500mA, this regulator can support a wide range of devices and circuits.
• Low Dropout Voltage: The maximum dropout voltage of 1.1V at 500mA ensures efficient operation even under varying load conditions.
• Low Quiescent Current: The regulator consumes only 1.5mA in quiescent mode, minimizing power loss and enhancing overall system efficiency.
• High Power Supply Rejection Ratio (PSRR): At 70dB (120Hz), the LM79M12CT/NOPB effectively filters out noise from the power supply, ensuring clean output voltage.
• Protection Features: Over-temperature and short-circuit protection mechanisms safeguard the regulator and connected circuits from damage.
• Wide Operating Temperature Range: The regulator operates reliably over a temperature range of 0°C to 125°C, making it suitable for various environmental conditions.
• Compliance and Packaging: The LM79M12CT/NOPB is REACH unaffected and RoHS3 compliant, ensuring it meets environmental and safety standards. It is packaged in a tube, facilitating easy handling and storage.

LM79M12CT/NOPB Applications

The LM79M12CT/NOPB is well-suited for a variety of applications where a stable negative voltage supply is required. Some specific use cases include:

• Power Supply Circuits: Ideal for providing a stable -12V supply in power supply units for electronic devices.
• Industrial Control Systems: Suitable for use in control systems that require a negative voltage reference.
• Telecommunications Equipment: Can be used in telecom equipment where a negative voltage is needed for biasing or other functions.
• Audio Amplifiers: Provides a clean negative voltage supply for audio amplifiers, ensuring high-quality audio output.
• Medical Devices: Suitable for medical equipment that requires a stable and reliable negative voltage supply.

Conclusion of LM79M12CT/NOPB

The LM79M12CT/NOPB is a robust and reliable linear voltage regulator with a fixed negative output configuration. Its ability to provide a stable -12V output with a maximum current of 500mA, combined with low dropout voltage and high PSRR, makes it an excellent choice for a variety of applications. Despite being marked as obsolete, the LM79M12CT/NOPB continues to offer significant advantages over similar models, particularly in terms of its low quiescent current and comprehensive protection features. Its wide operating temperature range and compliance with environmental standards further enhance its suitability for diverse industrial and commercial applications.