LM320L/LM79LXXAC
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Input Voltage
V
O
= −5V, −12V, −15V
Internal Power Dissipation (Note 2)
−35V
Internally Limited
Operating Temperature Range
Maximum Junction Temperature
Storage Temperature Range
Lead Temperature
(Soldering, 10 sec.)
0˚C to +70˚C
+125˚C
−55˚C to +150˚C
260˚C
Electrical Characteristics
T
A
= 0˚C to +70˚C unless otherwise noted.
Output Voltage
Input Voltage (unless otherwise noted)
Symbol
V
O
Parameter
Output
Voltage
Conditions
T
J
= 25˚C, I
O
= 100mA
1mA
≤
I
O
≤
100mA
V
MIN
≤
V
IN
≤
V
MAX
1mA
≤
I
O
≤
40mA
V
MIN
≤
V
IN
≤
V
MAX
∆V
O
Line
Regulation
T
J
= 25˚C, I
O
= 100mA
V
MIN
≤
V
IN
≤
V
MAX
T
J
= 25˚C, I
O
= 40mA
V
MIN
≤
V
IN
≤
V
MAX
∆V
O
Load
Regulation
Long Term
Stability
Quiescent
Current
Quiescent
Current
Change
T
J
= 25˚C
1mA
≤
I
O
≤
100mA
∆V
O
I
Q
∆I
Q
I
O
= 100mA
I
O
= 100mA
1mA
≤
I
O
≤
100mA
1mA
≤
I
O
≤
40mA
I
O
= 100mA
V
MIN
≤
V
IN
≤
V
MAX
V
n
Output Noise T
J
= 25˚C, I
O
= 100mA
Voltage
f = 10Hz − 10kHz
Ripple
Rejection
T
J
= 25˚C, I
O
= 100mA
f = 120Hz
−7.3
−7.0
−14.6
−14.5
−17.7
−17.5
V
V
I
O
= 40mA
50
52
50
dB
20
2
6
0.3
0.1
0.25
(−20
≤
V
IN
≤
−7.5)
40
48
2
6
0.3
0.1
0.25
(−27
≤
V
IN
≤
−14.8)
96
60
2
6
0.3
0.1
0.25
(−30
≤
V
IN
≤
−18)
120
mA
mA
V
µV
mV/khrs
mA
Min
−5.2
−5.25
−5.25
−5V
−10V
Typ
−5
Max
−4.8
−4.75
−4.75
60
(−20
≤
V
IN
≤
−7.3)
60
(−20
≤
V
IN
≤
−7)
50
Min
−12.5
−12.6
−12.6
−12V
−17V
Typ
−12
Max
−11.5
−11.4
−11.4
45
(−27
≤
V
IN
≤
−14.6)
45
(−27
≤
V
IN
≤
−14.5)
100
Min
−15.6
−15.75
−15.75
−15V
−20V
Typ
−15
Max
−14.4
−14.25
V
−14.25
45
(−30
≤
V
IN
≤
−17.7)
45
(−30
≤
V
IN
≤
−17.5)
125
mV
V
mV
V
mV
Units
(−20
≤
V
IN
≤
−7.5)
(−20
≤
V
IN
≤
−7)
(−27
≤
V
IN
≤
−14.8)
(−27
≤
V
IN
≤
−14.5)
(−30
≤
V
IN
≤
−18)
(−30
≤
V
IN
≤
−17.5)
Input Voltage T
J
= 25˚C, I
O
= 100mA
Required to
Maintain Line
Regulation
Note 1:
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
functional, but do not guarantee specific performance limits.
Note 2:
Thermal resistance of Z package is 60˚C/W
θ
JC
, 232˚C/W
θ
JA
at still air, and 88˚C/W at 400 ft/min of air. The M package
θ
JA
is 180˚C/W in still air. The
maximum junction temperature shall not exceed 125˚C on electrical parameters.
Note 3:
To ensure constant junction temperature, low duty cycle pulse testing is used.
3
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