2001 Fairchild Semiconductor Corporation
www.fairchildsemi.com
Rev. 1.0.0
Features
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
D-PAK
1. GND 2. Input 3. Output
1
1
Schematic Diagram
KA79MXX
3-Terminal 0.5A Negative Voltage Regulator
KA79MXX
2
Absolute Maximum Ratings
Electrical Characteristics (KA79M05/KA79M05R)
(Refer to test circuit, 0
C
T
J
+125
C, l
O
=350mA, V
I
=-10V,unless otherwise specified, C
I
=0.33
F,C
O
=0.1
F)
Note:
1. Load and line regulation are specified at constant junction temperature. Change in V
O
due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
Parameter
Symbol
Value
Unit
Input Voltage(for V
O
= -5V to -18V)
(for V
O
= -24V)
V
I
V
I
-35
-40
V
V
Thermal Resistance Junction-Cases
R
JC
5
C /W
Thermal Resistance Junction-Air
R
JA
65
C /W
Operating Temperature Range
T
OPR
0 ~ +125
C
Storage Temperature Range
T
STG
-65 ~ +125
C
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Unit
Output Voltage
V
O
T
J
= +25
C
-4.8
-5
-5.2
V
I
O
= 5mA to 350mA
V
I
= -V7 to -25V
-4.75
-5
-5.25
Line Regulation (Note1)
V
O
T
J
=+25
C
V
I
= -7V to -25V
-
7.0
50
mV
V
I
= -8V to -25V
-
2.0
30
Load Regulation (Note1)
V
O
I
O
= 5mA to 500mA
T
J
= +25
C
-
30
100
mV
Quiescent Current
I
Q
T
J
= +25
C
-
3.0
6.0
mA
Quiescent Current Change
I
Q
I
O
= 5mA to 350mA
-
-
0.4
mA
I
O
= 200mA
V
I
= -8V to -25V
-
-
0.4
Output Voltage Drift
Vo/
T
I
O
= 5mA
-
-0.2
-
mV/
C
Output Noise Voltage
V
N
f = 10Hz, 100KHz
T
A
= +25
C
-
40
-
V
Ripple Rejection
RR
f = 120Hz
V
J
= -8Vto -18V
54
60
-
dB
Dropout Voltage
V
D
T
J
=+25
C, I
O
= 500mA
-
1.1
-
V
Short Circuit Current
I
SC
T
J
= +25
C, V
I
= -35V
-
140
-
mA
Peak Current
I
PK
T
J
= +25
C
-
650
-
mA
KA79MXX
3
Electrical Characteristics (KA79M06)
(Refer to test circuit, 0
C
T
J
+125
C, l
O
=350mA, V
I
= -11V,unless otherwise specified)
Note:
1. Load and line regulation are specified at constant junction temperature. Change in V
O
due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Unit
Output Voltage
V
O
T
J
= +25
C
- 5.75 - 6.0 - 6.25
V
I
O
= 5mA to 350mA
V
I
= -8.0V to -25V
- 5.7
- 6.0
- 6.3
Line Regulation (Note1)
V
O
T
J
=+25
C
V
I
= -8Vto -25V
-
7.0
60
mV
V
I
= -9V to -19V
-
2.0
40
Load Regulation (Note1)
V
O
T
J
= +25
C
I
O
= 5.0mA to 500mA
-
30
120
mV
Quiescent Current
I
Q
T
J
= +25
C
-
3
6
mA
Quiescent Current Change
I
Q
I
O
= 5mA to 350mA
-
-
0.4
mA
V
I
= -8V to -25V
-
-
0.4
Output Voltage Drift
V
O
/
T
I
O
= 5mA
-
0.4
-
mV/
C
Output Noise Voltage
V
N
f = 10Hz to 100KHz,T
A
= +25
C
-
50
-
V
Ripple Rejection
RR
f = 120Hz,V
I
= -9V to -19V
54
60
-
dB
Dropout Voltage
V
D
I
O
= 500mA, T
J
= +25
C
-
1.1
-
V
Short Circuit Current
I
SC
V
I
= -35V, T
J
= +25
C
-
140
-
mA
Peak Current
I
PK
T
J
= +25
C
-
650
-
mA
KA79MXX
4
Electrical Characteristics (KA79M08/KA79M08R)
(Refer to test circuit, 0
C
T
J
+125
C, l
O
=350mA, V
I
= -14V,unless otherwise specified)
Note:
1. Load and line regulation are specified at constant junction temperature. Change in V
O
due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Unit
Output Voltage
V
O
T
J
= +25
C
- 7.7
- 8.0
- 8.3
V
I
O
= 5mA to 350mA
V
I
= -10.5V to -25V
- 7.6
- 8.0
- 8.4
Line Regulation (Note1)
V
O
T
J
=+25
C
V
I
= -10.5V to -25V
-
7.0
80
mV
V
I
= -11V to -21V
-
2.0
50
Load Regulation (Note1)
V
O
T
J
= +25
C
I
O
= 5.0mA to 500mA
-
30
160
mV
Quiescent Current
I
Q
T
J
= +25
C
-
3
6
mA
Quiescent Current Change
I
Q
I
O
= 5mA to 350mA
-
-
0.4
mA
V
I
= -8V to -25V
-
-
0.4
Output Voltage Drift
V
O
/
T
I
O
= 5mA
-
-0.6
-
mV/
C
Output Noise Voltage
V
N
f = 10Hz to 100KHz,T
A
= +25
C
-
60
-
V
Ripple Rejection
RR
f = 120Hz,V
I
= -9V to -19V
54
59
-
dB
Dropout Voltage
V
D
I
O
= 500mA, T
J
= +25
C
-
1.1
-
V
Short Circuit Current
I
SC
V
I
= -35V, T
J
= +25
C
-
140
-
mA
Peak Current
I
PK
T
J
= +25
C
-
650
-
mA
KA79MXX
5
Electrical Characteristics (KA79M12)
(Refer to test circuit, 0
C
T
J
+125
C, l
O
=350mA, V
I
= -19V,unless otherwise specified)
Note:
1. Load and line regulation are specified at constant junction temperature. Change in V
O
due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Unit
Output Voltage
V
O
T
J
= +25
C
-11.5
-12
-12.5
V
I
O
= 5mA to 350mA
V
I
= -14.5V to -30V
-11.4
-12
-12.6
Line Regulation (Note1)
V
O
T
J
=+25
C
V
I
= -14.5V to -30V
-
8.0
80
mV
V
I
= -15V to -25V
-
3.0
50
Load Regulation (Note1)
V
O
T
J
= +25
C
I
O
= 5.0mA to 500mA
-
30
240
mV
Quiescent Current
I
Q
T
J
= +25
C
-
3
6
mA
Quiescent Current Change
I
Q
I
O
= 5mA to 350mA
-
-
0.4
mA
V
I
= -14.5V to -30V
-
-
0.4
Output Voltage Drift
V
O
/
T
I
O
= 5mA
-
-0.8
-
mV/
C
Output Noise Voltage
V
N
f = 10Hz to 100KHz,T
A
=+25
C
-
75
-
V
Ripple Rejection
RR
f = 120Hz,V
I
= -15V to -25V
54
60
-
dB
Dropout Voltage
V
D
I
O
= 500mA, T
J
= +25
C
-
1.1
-
V
Short Circuit Current
I
SC
V
I
= -35V, T
J
= +25
C
-
140
-
mA
Peak Current
I
PK
T
J
= +25
C
-
650
-
mA
PDF 
ZIP