Samsung SR-40RMB Service Manual page 30

6. Circuit related Parts List
REGULATOR
3-TERMINAL 1A POSITIVE
VOLTAGE REGURATORS
The KA78XX series of three-terminal positive
regulators are available in the TO-220 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 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.
FEATURES
ƒU Out put Current up to 1A
ƒU Output Voltages of 5; 6; 8; 9; 10; 11; 12; 15; 18; 24V
ƒU <None>Thermal Overload Protection
ƒU Short Circuit Protection
ƒU Output Transistor SOA Protection
BLOCK DIAGRAM
INPUT
1
STARTING
CIRCUIT
Samsung Electronics
ORDERING INFORMATION
CURRENT
GENERATOR
REFERENCE ERROR
VOLTAGE AMPLIFIER
TO-220
1:Input 2:GND
Device Package Operating Temperature
KA78XX TO-220
KA78XXA TO-220
KA78XXI TO-220
SERIES
PASS
ELEMENT
SOA
PROTECTION
THERMAL
PROTECTION
3:Output
0 ~ +125¡
-40 ~ +125¡
OUTPUT
3
GND
2
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