UNISONIC TECHNOLOGIES CO., LTD
LM79XX
3 TERMINAL 1A NEGATIVE
VOLTAGE REGULATOR
DESCRIPTION
LINEAR INTEGRATED CIRCUIT
The UTC
LM79XX
series of three-terminal negative regulators is
available several fixed output voltage, making them useful in a wide
range of application. Each type employs internal current limiting, thermal
shut-down and safe area protection, making it essentially indestructible.
FEATURES
* Output Current Up to 1A
* -5V, -6V, -8V, -9V,-12V, -15V, -18V, -24V Output Voltage Available
* Thermal Overload Protection
ORDERING INFORMATION
Ordering Number
Halogen Free
LM79xxG-TA3-T
LM79xxG-TF3-T
G: GND
I: Input
Package
TO-220
TO-220F
Pin Assignment
1
2
3
G
I
O
G
I
O
Packing
Tube
Tube
Lead Free
LM79xxL-TA3-T
LM79xxL-TF3-T
Note: Pin Assignment: O: Output
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LM79XX
MARKING INFORMATION
PACKAGE
VOLTAGE CODE
05:-5.0V
06:-6.0V
07: -7.0V
08:-8.0V
09:-9.0V
12:-12V
15:-15V
18:-18V
24:-24V
LINEAR INTEGRATED CIRCUIT
MARKING
TO-220
TO-220F
BLOCK DIAGRAM
GND
R
1
R
2
Voltage
Reference
OUTPUT
Protection
Circuitry
RSC
INPUT
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LM79XX
PARAMETER
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS
(T
A
=25C, unless otherwise specified)
SYMBOL
RATING
UNIT
Input Voltage
V
IN
-35
V
Output Current
I
OUT
1
A
Power Dissipation
P
D
Internally Limited
W
Operating Temperature
T
OPR
-40 ~ +85
C
Storage Temperature
T
STG
-65 ~ +150
C
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
THERMAL DATA
SYMBOL
θ
JA
θ
JC
RATING
65
5
UNIT
C
/W
C
/W
PARAMETER
Junction to Ambient
Junction to Case
ELECTRICAL CHARACTERISTICS
(I
OUT
=0.5A, T
J
=0C~125C, C
I
=2.2uF, C
O
=1uF, unless otherwise specified)
For UTC LM7905
(V
IN
=-10V)
PARAMETER
Output Voltage
Dropout Voltage
Line Regulation
Load Regulation
Quiescent Current
Quiescent Current Change
Output Noise Voltage
Output Voltage Drift
Ripple Rejection
Peak Current
TEST CONDITIONS
MIN
T
J
=25C -4.80
V
OUT
V
IN
=-7V~-20V
-4.75
I
OUT
=5mA~1A, P
D
≦
15W
V
D
I
OUT
=1A
T
J
=25C
V
IN
=-7V~-25V
T
J
=25C
V
OUT
V
IN
=-8V~-12V
T
J
=25C
I
OUT
=5mA~1A
T
J
=25C
V
OUT
I
OUT
=250mA~750mA
T
J
=25C
I
Q
T
J
=25C
I
OUT
=5mA~1A
I
Q
V
IN
=-7V~-25V
eN
f=10Hz~100kHz
T
A
=25C
V
OUT
/T I
OUT
=5mA
RR
V
IN
=-8V~-18V, f=120Hz
54
I
PEAK
T
J
=25C
SYMBOL
TYP
-5.0
MAX
-5.20
-5.25
2
10
5
10
3
3
0.05
0.1
100
-0.4
60
2.2
100
60
100
50
6
0.5
1.3
UNIT
V
V
V
mV
mV
mV
mV
mA
mA
mA
μV
mV/C
dB
A
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LM79XX
ELECTRICAL CHARACTERISTICS(Cont.)
For UTC LM7906
(V
IN
=-11V)
PARAMETER
Output Voltage
Dropout Voltage
Line Regulation
Load Regulation
Quiescent Current
Quiescent Current Change
Output Noise Voltage
Output Voltage Drift
Ripple Rejection
Peak Current
For UTC LM7907
(V
IN
=-13V)
PARAMETER
Output Voltage
Dropout Voltage
Line Regulation
Load Regulation
Quiescent Current
Quiescent Current Change
Output Noise Voltage
Output Voltage Drift
Ripple Rejection
Peak Current
LINEAR INTEGRATED CIRCUIT
TEST CONDITIONS
MIN
T
J
=25C -5.76
V
OUT
V
IN
=-8V~-21V,
-5.70
I
OUT
=5mA~1A, P
D
≦
15W
V
D
I
OUT
=1.0A
T
J
=25C
T
J
=25C
V
IN
=-8V~-25V
V
OUT
V
IN
=-9V~-13V
T
J
=25C
T
J
=25C
I
OUT
=5mA~1A
V
OUT
I
OUT
=250mA~750mA
T
J
=25C
I
Q
T
J
=25C
I
OUT
=5mA~1A
I
Q
V
IN
=-8V~-25V
eN
f=10Hz~100kHz
T
A
=25C
V
OUT
/T I
OUT
=5mA
RR
V
IN
=-9V~-19V, f=120Hz
54
I
PEAK
T
J
=25C
TEST CONDITIONS
MIN
T
J
=25C -6.72
V
OUT
V
IN
=-9.5V~-22V,
-6.65
I
OUT
=5mA~1A, P
D
≦
15W
V
D
I
OUT
=1.0A
T
J
=25C
V
IN
=-9.5V~-25V
T
J
=25C
V
OUT
V
IN
=-10.5V~-15V
T
J
=25C
I
OUT
=5mA~1A
T
J
=25C
V
OUT
I
OUT
=250mA~750mA
T
J
=25C
I
Q
T
J
=25C
I
OUT
=5mA~1A
I
Q
V
IN
=-10.5V~-25V
eN
f=10Hz~100kHz
T
A
=25C
V
OUT
/T I
OUT
=5mA
RR
V
IN
=-10.5V~-21.5V, f=120Hz
54
I
PEAK
T
J
=25C
SYMBOL
SYMBOL
TYP
-6.00
MAX
-6.24
-6.30
UNIT
V
V
V
mV
mV
mV
mV
mA
mA
mA
μV
mV/C
dB
A
UNIT
V
V
V
mV
mV
mV
mV
mA
mA
mA
μV
mV/C
dB
A
2
10
5
10
3
3
0.05
0.1
130
-0.5
60
2.2
TYP
-7.00
120
60
120
60
6
0.5
1.3
MAX
-7.28
-7.35
2
10
5
10
3
3
0.05
0.1
130
-0.5
60
2.2
110
70
140
70
6
0.5
1.3
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LM79XX
ELECTRICAL CHARACTERISTICS(Cont.)
For UTC LM7908
(V
IN
=-14V)
PARAMETER
Output Voltage
Dropout Voltage
Line Regulation
Load Regulation
Quiescent Current
Quiescent Current Change
Output Noise Voltage
Output Voltage Drift
Ripple Rejection
Peak Current
For UTC LM7909
(V
IN
=-15V)
PARAMETER
Output Voltage
Dropout Voltage
Line Regulation
Load Regulation
Quiescent Current
Quiescent Current Change
Output Noise Voltage
Output Voltage Drift
Ripple Rejection
Peak Current
SYMBOL
LINEAR INTEGRATED CIRCUIT
TEST CONDITIONS
MIN
T
J
=25C -7.68
V
OUT
V
IN
=-10.5V~-23V,
-7.60
I
OUT
=5mA~1A, P
D
≦
15W
V
D
I
OUT
=1A
T
J
=25C
V
IN
=-10.5V~-25V
T
J
=25C
V
OUT
V
IN
=-11.5V~-17V
T
J
=25C
I
OUT
=5mA~1A
T
J
=25C
V
OUT
I
OUT
=250mA~750mA
T
J
=25C
I
Q
T
J
=25C
I
OUT
=5mA~1A
I
Q
V
IN
=-11.5V~-25V
eN
f=10Hz~100kHz
T
A
=25C
V
OUT
/T I
OUT
=5mA
RR
V
IN
=-11.5V~-21.5V, f=120Hz
54
I
PEAK
T
J
=25C
TEST CONDITIONS
MIN
T
J
=25C -8.64
V
OUT
V
IN
=-11.5V~-23V,
-8.55
I
OUT
=5mA~1A, P
D
≦
15W
V
D
I
OUT
=1A
T
J
=25C
T
J
=25C
V
IN
=-11.5V~-26V
V
OUT
V
IN
=-12V~-18V
T
J
=25C
T
J
=25C
I
OUT
=5mA~1A
V
OUT
I
OUT
=250mA~750mA
T
J
=25C
I
Q
T
J
=25C
I
OUT
=5mA~1A
I
Q
V
IN
=-11.5V~-26V
eN
f=10Hz~100kHz
T
A
=25C
V
OUT
/T I
OUT
=5mA
RR
V
IN
=-12.5V~-22.5V, f=120Hz
54
I
PEAK
T
J
=25C
SYMBOL
TYP
-8.0
MAX
-8.32
-8.40
UNIT
V
V
V
mV
mV
mV
mV
mA
mA
mA
μV
mV/C
dB
A
UNIT
V
V
V
mV
mV
mV
mV
mA
mA
mA
μV
mV/C
dB
A
2
10
5
12
4
3
0.05
0.1
175
-0.6
60
2.2
TYP
-9.0
160
80
160
80
6
0.5
1.0
MAX
-9.36
-9.45
2.0
10
5
12
4
3
0.05
0.1
175
-0.6
60
2.2
180
90
180
90
6
0.5
1.0
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