The LM7809 is a monolithic 3-terminal positive voltage regulator that employs internal current-limiting, thermal shutdown, and safe-area compensation, making them essentially indestructible. LM7809 is intended as a fixed voltage regulator in a wide range of applications including local (on-card) regulation for the elimination of noise and distribution problems associated with single-point regulation.
In addition, to use as fixed voltage regulators, this device can be used with external components to obtain adjustable output voltages and currents. Considerable effort was expended to make the entire series of regulators easy to use and minimize the number of external components. It is not necessary to bypass the output, although this does improve transient response.
7809 Pinout
7809 Pin Configuration
| Pin No | Pin Name |
|---|---|
| 1 | Input |
| 2 | Ground |
| 3 | Output |
7809 Key Features
- Output voltage tolerances of ±2% at Tj = 25˚C and ±4%
- over the temperature range (LM340A)
- n Line regulation of 0.01% of VOUT/V of ∆VIN at 1A load (LM340A)
- Load regulation of 0.3% of VOUT/A (LM340A)
- Internal thermal overload protection
- Internal short-circuit current limit
- Output transistor safe area protection
- P+ Product Enhancement tested
Application
- Local (on-card) regulation
You can download this datasheet for 7809 +9V 1A Positive Regulator – Datasheet from the link given below:
