KA79XX Datasheet, PDF (1/18 Pages) Fairchild Semiconductor – 3-Terminal 1A Negative Voltage Regulator

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KA79XX/KA79XXA
3-Terminal 1A Negative Voltage Regulator
Features
• 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
Description
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.
TO-220
Vin
1
1. GND 2. Input 3. Output
Internal Block Digram
GND
VOLTAGE
REFERENCE
+
-
I1
I2
R1
R2
OOuutptut
Q1
PROTECTION
CIRCUITRY
Q2
Rsc
In
Input
©2002 Fairchild Semiconductor Corporation
Rev. 1.0.1