L78M09CV (L7809CV) TO-220 Linear Voltage Regulator

L78M09CV Positive Voltage Regulator – Fixed 9V Linear Regulator
The L78M09CV is a fixed-output three-terminal positive voltage regulator designed to provide stable 9V regulated power for embedded systems, industrial electronics, analog circuits, communication devices, and general-purpose power supply applications. Housed in a TO-220 package, the regulator includes integrated protection mechanisms for safe and reliable operation in a wide range of electronic systems.

Why it’s a System Essential:
• Stable 9V Output: Provides reliable fixed-voltage regulation for analog and digital electronics.
• Local On-Board Regulation: Helps eliminate voltage distribution issues associated with centralized regulation.
• Integrated Thermal Protection: Automatically shuts down during excessive thermal overload conditions.
• Internal Short-Circuit Protection: Limits excessive current flow to improve circuit safety.
• Safe Area Compensation: Protects the output transistor during high-voltage short-circuit conditions.
• Medium Current Capability: Can supply over 0.5A output current with proper heatsinking.
• Reliable TO-220 Package: Suitable for industrial and educational PCB designs with heatsink compatibility.

Technical Specifications:
• Part Number: L78M09CV
• Device Type: Positive Linear Voltage Regulator
• Output Voltage: Fixed 9V
• Package Type: TO-220
• Number of Pins: 3

Protection Features:
• Thermal Overload Protection
• Internal Short-Circuit Protection
• Output Transistor Safe Area Compensation

Performance Features:
• Output Current Capability: Over 0.5A (with adequate heatsinking)
• Local On-Card Voltage Regulation Support

Features:
• Stable fixed 9V regulation
• Integrated overload and short-circuit protection
• Reliable thermal shutdown functionality
• Durable TO-220 package design
• Medium-current linear regulation
• Suitable for embedded and analog systems

Applications:
• Embedded systems power supplies
• Industrial automation electronics
• Analog and digital circuits
• Communication equipment
• Audio electronics
• Sensor and instrumentation systems
• Educational electronics projects
• DIY regulated power supplies
• General-purpose power regulation systems

Best For:
Ideal for students, hobbyists, makers, engineers, and embedded developers working on regulated power supplies, industrial electronics, analog systems, communication devices, and embedded applications requiring reliable fixed 9V linear voltage regulation with built-in protection features.