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Fairchild Semiconductor Electronic Components Datasheet

MC79XX Datasheet

3-TERMINAL 1A NEGATIVE VOLTAGE REGULATORS

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MC79XX pdf
MC79XX (LM79XX) (KA79XX/A)
FIXED VOLTAGE REGULATOR (NEGATIVE)
3-TERMINAL 1A NEGATIVE VOLTAGE REGULATORS
The MC79XX 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 shut-down and safe area protection, making it essentially indestructible.
TO-220
FEATURES
Output Current in Excess of 1A
Output Voltages of -5, -6, -8, -12, -15, -18, -24V
Internal Thermal Overload Protection
Short Circuit Protection
Output Transistor Safe-Area Compensation
1: GND 2: Input 3: Output
ORDERING INFORMATION
Device
MC79XXCT (LM79XXCT) (KA79XX)
KA79XXA
Output Voltage
Tolerance
± 4%
± 2%
Package
TO-220
Operating Temperature
0 ~+125°C
BLOCK DIAGRAM
GND
VOLTAGE
REFERENCE
I1
+
-
I2
R1
R2
Out
Q1
PROTECTION
CIRCUITRY
Q2
Rsc
In
©1999 Fairchild Semiconductor Corporation
Rev. C


Fairchild Semiconductor Electronic Components Datasheet

MC79XX Datasheet

3-TERMINAL 1A NEGATIVE VOLTAGE REGULATORS

No Preview Available !

MC79XX pdf
MC79XX (LM79XX) (KA79XX/A)
FIXED VOLTAGE REGULATOR (NEGATIVE)
ABSOLUTE MAXIMUM RATINGS (TA=+25°C, unless otherwise specified)
Characteristic
Input Voltage
Thermal Resistance Junction-Cases
Junction-Air
Operating Temperature Range
Storage Temperature Range
Symbol
VI
RθJC
RθJA
TOPR
TSTG
Value
-35
5
65
0 ~ +125
- 65 ~ +150
Unit
V
°C / W
°C /W
°C
°C
LM7905 ELECTRICAL CHARACTERISTICS
(VI = 10V, lO = 500mA, 0°C TJ ≤ +125°C, CI =2.2µF, CO =1µF, unless otherwise specified.)
Characteristic
Output Voltage
Line Regulation
Load Regulation
Quiescent Current
Quiescent Current Change
Temperature Coefficient of VD
Output Noise Voltage
Ripple Rejection
Dropout Voltage
Short Circuit Current
Peak Current
Symbol
VO
VO
VO
IQ
IQ
VO/T
VN
RR
VD
ISC
IPK
Test Conditions
TJ =+25°C
IO = 5mA to 1A, PO 15W
VI = -7 to -20V
VI = -7 to -20V
TJ =25°C
IO=1A
VI = -8 to -12V
IO=1A
VI = -7.5 to -25V
VI= -8 to -12V
IO=1A
IO = 5mA to 1.5A
TJ =+25°C
IO = 250 to 750mA
TJ =+25°C
IO = 5mA to 1A
VI = -8 to -25V
IO = 5mA
f = 10Hz to 100KHz
TA =+25°C
f = 120Hz, IO = -35V
VI = 10V
TJ=+25°C
IO = 1A
TJ =+25°C, VI = -35V
TJ =+25°C
Min
- 4.8
- 4.75
Typ
- 5.0
-5.0
5
Max
- 5.2
- 5.25
50
2 25
Unit
V
mV
7 50
7 50
10
3
3
0.05
0.1
- 0.4
40
100
50
6
0.5
0.8
mV
mA
mA
mV/°C
µV
54 60
dB
2V
300 mA
2.2 A
* Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be
taken into account separately. Pulse testing with low duty is used.


Part Number MC79XX
Description 3-TERMINAL 1A NEGATIVE VOLTAGE REGULATORS
Maker Fairchild
Total Page 15 Pages
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