The KA78L09A is a three-terminal positive voltage regulator manufactured by Fairchild/ON Semiconductor. It is designed to provide a fixed 9V output with a low dropout voltage and is commonly used in a wide range of electronic applications where a stable and regulated voltage source is required.

Applications

• Voltage regulation in electronic circuits
• Power supplies for microcontrollers
• Linear regulators
• Battery chargers
• Instrumentation and control systems

Features

• Fixed 9V Output
• Output Current up to 100mA
• Internal Thermal Overload Protection
• Internal Short Circuit Current Limiting
• Output Transistor Safe-Area Compensation
• Available in TO-92 and SOP-8 Packages

Benefits

• Stable Voltage: Provides a stable and regulated 9V output voltage.
• Overload Protection: Internal thermal overload and short-circuit protection prevent damage to the regulator and the connected circuit.
• Simple Design: Requires minimal external components, simplifying circuit design.
• Cost-Effective: Low cost makes it an economical solution for voltage regulation.
• Ease of Use: Easy to integrate into existing circuits due to its standard package and pinout.

Specifications

The KA78L09A features a fixed output voltage of 9V. The input voltage range is typically from 11.5V to 25V. The output current is rated up to 100mA. It is typically available in a TO-92 or SOP-8 package. The dropout voltage is typically around 2V.

The KA78L09A is a reliable and cost-effective positive voltage regulator, suitable for a wide range of applications requiring a stable 9V supply. Always consult the manufacturer's datasheet for the most accurate and up-to-date specifications before integrating this component into a circuit design.