onsemi Voltage Regulators - Linear MC7809CTG

The MC7809CTG is a linear voltage regulator from Quarktwin Technology Ltd. designed to provide a fixed output voltage of 9.0 V with a maximum output current of 1.0 A. It features internal current limiting, thermal shutdown, and safe-area compensation, ensuring reliable operation under various conditions. The device is capable of handling input voltages ranging from 5.0 V to 35 V, with a maximum power dissipation that is internally limited. This regulator is available in a TO-220 package and is Pb-free, making it suitable for a range of applications, including automotive, due to its AEC-Q100 qualification. The MC7809CTG also offers output voltage tolerances of 1.5%, 2%, and 4%, and can be used with external components for adjustable voltage applications. Its thermal resistance is rated at 65¬8C/W from junction to ambient, allowing for effective heat management when properly heatsinked. Engineers considering this component should note its robust protection features and suitability for local, on-card regulation in various electronic designs.