LM7809S
The LM7809S is a linear voltage regulator IC that provides a regulated output voltage of 9 volts. It is part of the LM78xx series of three-terminal positive regulators. The 'S' suffix typically indicates a TO-220 package, a common type of plastic-encapsulated transistor with three pins. These regulators are designed for use in a wide range of applications requiring a stable positive voltage.
The LM7809S requires an input voltage that is at least a few volts higher than the output
Key features of the LM7809S include its simple two-component circuit (input and output capacitors are usually