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KA79MXX
3-Terminal 0.5A Negative Voltage Regulator
Features
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No External Components Required
Output Current in Excess of 0.5A
Internal Thermal Overload
Internal Short Circuit Current Limiting
Output Transistor Safe Area Compensation
Output Voltages of -5V,-6V,-8V, -12V,-15V,-18V,-24V
Description
The KA79MXX series of 3-Terminal medium current
negative voltage regulators are monolithic integrated circuits
designed as fixed voltage regulators. These regulators
employ internal current limiting, thermal shutdown and
safe area compensation making them essentially
indestructible.
TO-220
1
D-PAK
1
1. GND 2. Input 3. Output
Schematic Diagram
GND
R2
Q8
D1
D2
D3
Q12
R1
R3
Q10
Q9
R4
Q11
R5
R8
Q14
Q16
R13
R7
D5
Q18
Q2
Q3
Q17
Q24 Q25
Q5
Q1
Q4
Q6
Q7
Q19
R24
R25
Q20
R19
R18
C1
C2
R17
D4
Q23
Q26
R20
Q21 Q22
R21
R22
Q27
R23
R16
R6
Q13
R9
Q15
R12
R14
R10 R11
R15
OUT
IN
Rev. 1.0.1
©2011 Fairchild Semiconductor Corporation
FAIRCHILD [ FAIRCHILD SEMICONDUCTOR ]
