Datasheet

Absolute Maximum Ratings (Note 1)
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 −35V
Internal Power Dissipation (Note 2) Internally Limited
Operating Temperature Range 0˚C to +70˚C
Maximum Junction Temperature +125˚C
Storage Temperature Range −55˚C to +150˚C
Lead Temperature
(Soldering, 10 sec.) 260˚C
Electrical Characteristics (Note 3)
T
A
= 0˚C to +70˚C unless otherwise noted.
Output Voltage −5V −12V −15V
Input Voltage (unless otherwise noted) −10V −17V −20V Units
Symbol Parameter Conditions Min Typ Max Min Typ Max Min Typ Max
V
O
Output
Voltage
T
J
= 25˚C, I
O
= 100mA −5.2 −5 −4.8 −12.5 −12 −11.5 −15.6 −15 −14.4
1mA ≤ I
O
≤ 100mA −5.25 −4.75 −12.6 −11.4 −15.75 −14.25
V
MIN
≤ V
IN
≤ V
MAX
(−20 ≤ V
IN
≤ −7.5) (−27 ≤ V
IN
≤ −14.8) (−30 ≤ V
IN
≤ −18) V
1mA ≤ I
O
≤ 40mA −5.25 −4.75 −12.6 −11.4 −15.75 −14.25
V
MIN
≤ V
IN
≤ V
MAX
(−20 ≤ V
IN
≤ −7) (−27 ≤ V
IN
≤ −14.5) (−30 ≤ V
IN
≤ −17.5)
∆V
O
Line
Regulation
T
J
= 25˚C, I
O
= 100mA 60 45 45 mV
V
MIN
≤ V
IN
≤ V
MAX
(−20 ≤ V
IN
≤ −7.3) (−27 ≤ V
IN
≤ −14.6) (−30 ≤ V
IN
≤ −17.7) V
T
J
= 25˚C, I
O
= 40mA 60 45 45 mV
V
MIN
≤ V
IN
≤ V
MAX
(−20 ≤ V
IN
≤ −7) (−27 ≤ V
IN
≤ −14.5) (−30 ≤ V
IN
≤ −17.5) V
∆V
O
Load
Regulation
T
J
= 25˚C
50 100 125 mV
1mA ≤ I
O
≤ 100mA
∆V
O
Long Term
Stability
I
O
= 100mA 20 48 60 mV/khrs
I
Q
Quiescent
Current
I
O
= 100mA 2 6 2 6 2 6 mA
∆I
Q
Quiescent
Current
1mA ≤ I
O
≤ 100mA 0.3 0.3 0.3
Change 1mA ≤ I
O
≤ 40mA 0.1 0.1 0.1 mA
I
O
= 100mA 0.25 0.25 0.25 mA
V
MIN
≤ V
IN
≤ V
MAX
(−20 ≤ V
IN
≤ −7.5) (−27 ≤ V
IN
≤ −14.8) (−30 ≤ V
IN
≤ −18) V
V
n
Output Noise
Voltage
T
J
= 25˚C, I
O
= 100mA
40 96 120 µV
f = 10Hz − 10kHz
Ripple
Rejection
T
J
= 25˚C, I
O
= 100mA
50 52 50 dB
f = 120Hz
Input Voltage T
J
= 25˚C, I
O
= 100mA −7.3 −14.6 −17.7 V
Required to I
O
= 40mA −7.0 −14.5 −17.5 V
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.
LM320L/LM79LXXAC
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