Texas Instruments

LM78L12ACZ

LM78L12ACZ Description

The LM78L12ACZ is a fixed positive linear voltage regulator designed by Texas Instruments, a leading manufacturer in the electronics industry. This regulator is part of the Power Management Integrated Circuit (PMIC) category and is specified to provide a stable 12V output voltage with a maximum output current of 100mA. It is housed in a TO-92-3 package, making it suitable for through-hole mounting. The LM78L12ACZ operates within an input voltage range up to 35V and features a quiescent current of 3mA, ensuring efficient power consumption even under light load conditions. The regulator is designed to operate within a temperature range of 0°C to 125°C, making it suitable for a variety of industrial and consumer applications.

LM78L12ACZ Features

• Fixed Output Voltage: The LM78L12ACZ provides a stable 12V output voltage, ensuring reliable power supply for various electronic circuits.
• High Input Voltage Range: With a maximum input voltage of 35V, the regulator can handle a wide range of input voltages, making it versatile for different power supply scenarios.
• Low Quiescent Current: The regulator features a low quiescent current of 3mA, which minimizes power consumption and improves overall system efficiency.
• Over-Temperature and Short-Circuit Protection: The LM78L12ACZ includes built-in protection features against over-temperature and short-circuit conditions, enhancing the reliability and safety of the power supply system.
• High Power Supply Rejection Ratio (PSRR): The regulator boasts a PSRR of 54dB at 120Hz, effectively filtering out noise and ripple from the input power supply, resulting in a cleaner output voltage.
• Moisture Sensitivity Level (MSL): The MSL rating of 1 (Unlimited) indicates that the device is not sensitive to moisture, making it suitable for a wide range of environmental conditions.
• Obsolete Status: While the LM78L12ACZ is marked as obsolete, it remains a reliable choice for applications where its specific features are required, and it continues to be supported by Texas Instruments.

LM78L12ACZ Applications

The LM78L12ACZ is ideal for applications requiring a stable 12V power supply with low power consumption and high reliability. Specific use cases include:

• Consumer Electronics: Ideal for powering small electronic devices and peripherals that require a stable 12V supply.
• Industrial Equipment: Suitable for powering sensors, actuators, and other components in industrial control systems.
• Telecommunications: Can be used to power low-power communication modules and interfaces.
• Automotive: Applicable in automotive applications where a stable 12V supply is needed for various electronic components.
• Medical Devices: Suitable for powering low-power medical equipment and instruments that require a reliable and stable power source.

Conclusion of LM78L12ACZ

The LM78L12ACZ is a robust and reliable linear voltage regulator that offers a stable 12V output with a maximum current of 100mA. Its wide input voltage range, low quiescent current, and built-in protection features make it a versatile and efficient choice for various applications. Despite its obsolete status, the LM78L12ACZ remains a valuable component for applications requiring its specific technical specifications. Its high PSRR and moisture resistance further enhance its performance and reliability. For engineers and designers seeking a dependable 12V regulator, the LM78L12ACZ is a proven solution that continues to meet the demands of modern electronic systems.