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MC78XXE/LM78XXE/MC78XXAE
3-Terminal 1A Positive Voltage Regulator
Features
Output Current up to 1A Output Voltages of 5, 6, 8, 9, 12, 15, 18, 24V Thermal Overload Protection Short Circuit Protection Output Transistor Safe Operating Area Protection

Description
The MC78XXE/LM78XXE/MC78XXAE series of three terminal positive regulators are available in the TO-220/D-PAK package and with several fixed output voltages, making them useful in a wide range of applications. Each type employs internal current limiting, thermal shut down and safe operating area protection, making it essentially indestructible. If adequate heat sinking is provided, they can deliver over 1A output current. Although designed primarily as fixed voltage regulators, these devices can be used with external components to obtain adjustable voltages and currents.
TO-220
GND

1

D-PAK
GND

1

1. Input 2. GND 3. Output

Internal Block Digram
INPUT 1 CURRENT GENERATOR SERIES PASS ELEMENT OUTPUT 3

SOA PROTECTION

STARTING CIRCUIT

REFERENCE VOLTAGE

ERROR AMPLIFIER

THERMAL PROTECTION

GND 2

Rev. 1.0.0
2003 Fairchild Semiconductor Corporation

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MC7808AE DATASHEET