onsemi

MC78L08ACHX

MC78L08ACHX Description

The MC78L08ACHX is a linear voltage regulator designed to provide a stable 8V output voltage with a maximum input voltage of 30V. Manufactured by onsemi, this regulator is part of the Power Management Integrated Circuits (PMIC) category and is housed in a Surface Mount SOT89-3 package. Despite being marked as obsolete, the MC78L08ACHX remains a reliable choice for applications requiring a fixed output voltage and a maximum output current of 100mA. With a quiescent current of 5.5mA and a high Power Supply Rejection Ratio (PSRR) of 70dB at 120Hz, this regulator ensures efficient power management and minimal noise interference.

MC78L08ACHX Features

• Fixed Output Voltage: The MC78L08ACHX provides a stable 8V output voltage, making it suitable for applications where a consistent power supply is crucial.
• High Input Voltage Range: With a maximum input voltage of 30V, this regulator can handle a wide range of input voltages, ensuring compatibility with various power sources.
• Low Quiescent Current: The regulator operates with a quiescent current of only 5.5mA, which is beneficial for applications where power consumption needs to be minimized.
• High PSRR: The 70dB PSRR at 120Hz ensures that the regulator can effectively filter out noise from the power supply, resulting in cleaner output voltage.
• Protection Features: The MC78L08ACHX includes over-temperature and short-circuit protection, safeguarding the device and connected circuits from potential damage.
• Moisture Sensitivity Level: With an MSL of 1 (Unlimited), the regulator is suitable for a wide range of environmental conditions without the need for special handling.
• Operating Temperature Range: The regulator operates reliably within a temperature range of 0°C to 125°C, making it suitable for both ambient and high-temperature applications.
• Packaging: Available in a Surface Mount SOT89-3 package, the MC78L08ACHX is ideal for compact designs and automated assembly processes.

MC78L08ACHX Applications

The MC78L08ACHX is ideal for a variety of applications where a stable 8V output voltage and low power consumption are required. Some specific use cases include:

• Consumer Electronics: Ideal for powering small electronic devices such as portable audio systems, where a stable voltage supply is essential for consistent performance.
• Industrial Applications: Suitable for industrial control systems and sensors that require a reliable power source within a wide temperature range.
• Automotive Electronics: Given its high input voltage range and temperature tolerance, the MC78L08ACHX can be used in automotive applications where voltage fluctuations and high temperatures are common.
• Telecommunications: The regulator can be used in telecom equipment where low noise and high PSRR are critical for maintaining signal integrity.

Conclusion of MC78L08ACHX

The MC78L08ACHX, despite being marked as obsolete, remains a robust and reliable option for applications requiring a fixed 8V output voltage and up to 100mA of current. Its high input voltage range, low quiescent current, and high PSRR make it a standout choice for power management in various electronic systems. With built-in protection features and a wide operating temperature range, the MC78L08ACHX ensures durability and reliability in diverse environments. For designers and engineers looking for a compact, efficient, and stable power solution, the MC78L08ACHX is a worthy consideration.