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©2002 Fairchild Semiconductor Corporation
www.fairchildsemi.com
Rev. 1.0.5
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
D-PAK
1. Input 2. GND 3. Output
1
1
GND
GND
Internal Block Diagram
OUTPUT
3
R1
R2
GND
2
1
INPUT
SERIES
PASS
ELEMENT
SOA
PROTECTION
CURRENT
GENERATOR
STARTING
CIRCUIT
REFERENCE
VOLTAGE
ERROR
AMPLIFIER
THERMAL
PROTECTION
KA78MXX
3-Terminal 0.5A Positive Voltage Regulator
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