If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Power Dissipation
Input Voltage
Input-Output Voltage Differential
Junction Temperatures
Storage Temperature Range
Lead Temperature
(Soldering, 10 sec.)
Plastic
Internally Limited
−25V
25V
(Note
1)
−65°C to +150°C
300°C
260°C
(Note
3)
LM120K-5.0 and LM320K-5.0 Electrical Characteristics
Order Numbers
Design Output Current (I
D
)
Device Dissipation (P
D
)
Parameter
Output Voltage
Line Regulation
Input Voltage
Ripple Rejection
Load Regulation,
(Note
2)
Output Voltage,
(Note
1)
Quiescent Current
Quiescent Current
Change
f = 120 Hz
T
J
= 25°C, V
IN
= 10V,
5 mA
≤
I
LOAD
≤
I
D
−7.5V
≤
V
IN
≤
V
MAX
,
5 mA
≤
I
LOAD
≤
I
D
, P
≤
P
D
V
MIN
≤
V
IN
≤
V
MAX
T
J
= 25°C
V
MIN
≤
V
IN
≤
V
MAX
5 mA
≤
I
LOAD
≤
I
D
Output Noise Voltage
T
A
= 25°C, C
L
= 1 μF,
I
L
= 5 mA,
V
IN
= 10V, 10 Hz
≤
f
≤
100 kHz
Long Term Stability
Thermal Resistance
Junction to Case
Junction to Ambient
5
50
3
35
0.1
0.1
150
1
2
−5.20
Conditions
(Note
1)
T
J
= 25°C, V
IN
=10V,
I
LOAD
= 5 mA
T
J
= 25°C, I
LOAD
= 5 mA,
V
MIN
≤
V
IN
≤
V
MAX
−25
54
64
50
75
−7
10
25
Min
−5.1
Typ
−5
LM120K-5.0
(TO-3)
Metal Can Package
LM320K-5.0
(TO-3)
1.5A
20W
Max
−4.9
Min
−5.2
Typ
−5
10
−25
54
64
60
100
Max
−4.8
40
−7
V
mV
V
dB
mV
Units
−4.80
−5.25
−4.75
V
1
0.1
0.1
150
5
2
0.4
0.4
mA
mA
mA
μV
0.4
0.4
50
3
35
mV
°C/W
°C/W
www.national.com
2
LM120/LM320
LM120H-5.0 Electrical Characteristics
Order Numbers
Design Output Current (I
D
)
Device Dissipation (P
D
)
Parameter
Output Voltage
Line Regulation
Input Voltage
Ripple Rejection
Load Regulation,
(Note
2)
Output Voltage,
(Note
6)
Quiescent Current
Quiescent Current
Change
f = 120 Hz
T
J
= 25°C, V
IN
= 10V,
5 mA
≤
I
LOAD
≤
I
D
−7.5V
≤
V
IN
≤
V
MAX
,
5 mA
≤
I
LOAD
≤
I
D
, P
≤
P
D
V
MIN
≤
V
IN
≤
V
MAX
T
J
= 25°C
V
MIN
≤
V
IN
≤
V
MAX
5 mA
≤
I
LOAD
≤
I
D
Output Noise Voltage
T
A
= 25°C, C
L
= 1 μF,
I
L
= 5 mA,
V
IN
= 10V, 10 Hz
≤
f
≤
100 kHz
Long Term Stability
Thermal Resistance
Junction to Case
Junction to Ambient
I
LOAD
= 5 mA
T
J
= 25°C, I
LOAD
= 5 mA,
V
MIN
≤
V
IN
≤
V
MAX
Conditions
(Note
1)
T
J
= 25°C, V
IN
=10V,
(Note
3)
Metal Can Package
LM120H-5.0
(TO-39)
0.5A
2W
Min
−5.1
Typ
−5
10
−25
54
64
30
50
Max
−4.9
25
−7
V
mV
V
dB
mV
Units
−5.20
−4.80
V
1
0.05
0.04
150
5
2
0.4
0.4
mA
mA
mA
μV
mV
(Note
4)
(Note
4)
°C/W
°C/W
Note 1:
This specification applies over −55°C
≤
T
J
≤
+150°C for the LM120 and 0°C
≤
T
J
≤
+125°C for the LM320.
Note 2:
Regulation is measured at constant junction temperature. Changes in output voltage due to heating effects must be taken into account separately. To
ensure constant junction temperature, low duty cycle, pulse testing is used. The LM120/LM320 series does have low thermal feedback, improving line and load
regulation. On all other tests, even though power dissipation is internally limited, electrical specifications apply only up to P
D
.
Note 3:
For −5V 3 amp regulators, see LM145 data sheet.
Note 4:
Thermal resistance of typically 85°C/W (in 400 linear feet air flow), 224°C/W (in static air) junction to ambient, of typically 21°C/W junction to case.
Note 5:
Refer to RETS120-5H drawing for LM120H-5.0 or RETS120-5K drawing for LM120-5K military specifications.
3
www.national.com
LM120/LM320
Absolute Maximum Ratings
−12 Volt Regulators
(Note
9)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
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