The MC78L18ACPX is a three-terminal positive voltage regulator manufactured by Fairchild/ON Semiconductor. This device provides a fixed output voltage of 18V and is capable of supplying up to 100mA of output current. It is designed for various applications requiring a stable and regulated voltage source.

Applications:

• Battery chargers
• Microcontroller power supplies
• Instrumentation
• Small electronic devices
• Linear regulators for post-regulation

Features:

• Fixed output voltage of 18V
• Output current up to 100mA
• Internal short circuit current limiting
• Internal thermal overload protection
• No external components required
• Available in a space-saving TO-92 package

Benefits:

• Stable Voltage Supply: Provides a highly stable and regulated 18V output, ensuring consistent performance of connected devices.
• Overload Protection: Built-in short circuit current limiting and thermal overload protection prevent damage to the regulator and connected circuitry in fault conditions.
• Simplified Design: Requires no external components, reducing board space and simplifying circuit design.
• Compact Size: The TO-92 package allows for easy integration into space-constrained applications.
• Cost-Effective: Offers a reliable and cost-effective solution for voltage regulation in various electronic systems.

Additional Details:

The MC78L18ACPX has an input voltage range of up to 30V. The device operates over a temperature range of 0°C to +125°C. It provides excellent line and load regulation, ensuring a stable output voltage even with variations in input voltage or output current. Its low quiescent current further enhances its efficiency. The MC78L18ACPX is ideally suited for applications where a reliable and compact 18V voltage source is required, such as in small electronic devices and instrumentation equipment. The internal protection features contribute to the overall robustness and longevity of the circuit.