KA78MXX_02 Datasheet, PDF (1/14 Pages) Fairchild Semiconductor – 3-Terminal 0.5A Positive Voltage Regulator

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KA78MXX
3-Terminal 0.5A Positive Voltage Regulator
Features
• Output Current up to 0.5A
• Output Voltages of 5, 6, 8, 12, 15, 18, 24V
• Thermal Overload Protection
• Short Circuit Protection
• Output Transistor Safe Operating Area (SOA) Protection
Description
The KA78MXX series of three terminal positive regulators
are available in the TO-220/D-PAK package with several
fixed output voltages making it useful in a wide range of
applications.
TO-220
GND
1
D-PAK
GND
1
1. Input 2. GND 3. Output
Internal Block Diagram
INPUT
1
STARTING
CIRCUIT
CURRENT
GENERATOR
REFERENCE
VOLTAGE
SERIES
PASS
ELEMENT
SOA
PROTECTION
ERROR
AMPLIFIER
THERMAL
PROTECTION
OUTPUT
3
R1
R2
GND
2
©2002 Fairchild Semiconductor Corporation
Rev. 1.0.5