Texas Instruments

LM79M12CT

LM79M12CT Description

The LM79M12CT is a fixed negative output linear regulator designed by Texas Instruments, offering a regulated output voltage of -12V with a maximum output current of 500mA. This regulator is housed in a TO-220-3 package, making it suitable for through-hole mounting. Despite its obsolete status, the LM79M12CT remains a reliable choice for applications requiring a stable negative voltage supply. It features a low dropout voltage of 1.1V at 500mA, ensuring efficient power conversion even under varying input conditions. The regulator operates within a temperature range of 0°C to 125°C, making it suitable for a wide range of industrial and consumer applications. Additional protection features include over-temperature and short-circuit protection, enhancing the reliability and durability of the device.

LM79M12CT Features

• Fixed Negative Output Voltage: Provides a stable -12V output, ideal for applications requiring a negative supply voltage.
• High Output Current: Capable of delivering up to 500mA, ensuring sufficient power for demanding applications.
• Low Dropout Voltage: A maximum dropout voltage of 1.1V at 500mA ensures efficient operation even with low input-to-output voltage differentials.
• Wide Operating Temperature Range: Suitable for use in environments ranging from 0°C to 125°C, making it versatile for various applications.
• Protection Features: Over-temperature and short-circuit protection enhance the reliability and longevity of the regulator.
• Low Quiescent Current: A quiescent current of only 1.5mA minimizes power consumption during standby conditions.
• High PSRR: A power supply rejection ratio of 70dB at 120Hz ensures minimal noise and ripple on the output voltage.
• Moisture Sensitivity Level: MSL 1 (Unlimited) indicates that the device is not sensitive to moisture, simplifying handling and storage requirements.
• REACH Compliance: The LM79M12CT is REACH unaffected, ensuring compliance with environmental and safety regulations.

LM79M12CT Applications

The LM79M12CT is ideal for a variety of applications where a stable negative voltage supply is required. Some specific use cases include:

• Industrial Control Systems: Provides a reliable negative voltage supply for control circuits and sensors.
• Consumer Electronics: Suitable for powering negative voltage rails in devices such as audio amplifiers and televisions.
• Telecommunications: Ensures stable power for negative voltage requirements in communication equipment.
• Automotive Electronics: Ideal for applications within the automotive industry that require a negative voltage supply.
• Medical Equipment: Can be used in medical devices where a stable and reliable negative voltage is necessary for proper operation.

Conclusion of LM79M12CT

The LM79M12CT is a robust and reliable linear regulator designed for applications requiring a stable -12V output. Its low dropout voltage, high output current capability, and wide operating temperature range make it a versatile choice for various industrial and consumer applications. Despite its obsolete status, the LM79M12CT remains a valuable component due to its proven performance and reliability. The inclusion of over-temperature and short-circuit protection further enhances its durability, making it an ideal choice for applications where a stable negative voltage supply is critical.