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KA79XX/KA79XXA
3-Terminal 1A Negative Voltage Regulator
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Features
Description
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The KA79XX/KA79XXA series of three-terminal negative
regulators are available in 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 shutdown and safe operating area
protection, making it essentially indestructible.
Output Current in Excess of 1A
Output Voltages of -5, -6, -8, -9, -10, -12, -15, -18 , -24V
Internal Thermal Overload Protection
Short Circuit Protection
Output Transistor Safe Operating Area Compensation
TO-220
Vin
1
1. GND 2. Input 3. Output
Internal Block Digram
GND
R1
VOLTAGE
REFERENCE
R2
Out
Output
+
Q1
Q2
I1
I2
PROTECTION
CIRCUITRY
Rsc
In
Input
Rev. 1.0.1
©2002 Fairchild Semiconductor Corporation
