Fixed +9V linear regulator, 78xx series. 1A output, TO-220 package.
| Pin | Name | Function | Type |
|---|---|---|---|
| 1 | INPUT | Unregulated DC input | PWR |
| 2 | GND | Ground | GND |
| 3 | OUTPUT | Regulated +9V output | PWR |
The LM7809 is a fixed +9V linear voltage regulator from the 78xx series. Provides stable 9V at 1A output with thermal and current-limit protection.