Absolute Maximum Ratings
(Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
(Note 10)
Pulse Voltage from V
+
to V
−
(50 ms)
Continuous Voltage from V
+
to V
−
Input-Output Voltage Differential
Maximum Amplifier Input Voltage
(Either Input)
Maximum Amplifier Input Voltage
(Differential)
Current from V
Z
Current from V
REF
Internal Power Dissipation
Metal Can (Note 2)
50V
40V
40V
8.5V
5V
25 mA
15 mA
800 mW
Cavity DIP (Note 2)
900 mW
Molded DIP (Note 2)
660 mW
Operating Temperature Range
LM723
−55˚C to +150˚C
LM723C
0˚C to +70˚C
Storage Temperature Range
Metal Can
−65˚C to +150˚C
Molded DIP
−55˚C to +150˚C
Lead Temperature (Soldering, 4 sec. max.)
Hermetic Package
300˚C
Plastic Package
260˚C
ESD Tolerance
1200V
(Human body model, 1.5 kΩ in series with 100 pF)
Electrical Characteristics
(Note 3) (Note 10)
Parameter
Line Regulation
Conditions
Min
V
IN
= 12V to V
IN
= 15V
−55˚C
≤
T
A
≤
+125˚C
0˚C
≤
T
A
≤
+70˚C
V
IN
= 12V to V
IN
= 40V
I
L
= 1 mA to I
L
= 50 mA
−55˚C
≤
T
A
≤
+125˚C
Ripple Rejection
Average Temperature Coeffic-
ient of Output Voltage (Note 8)
Short Circuit Current Limit
Reference Voltage
Output Noise Voltage
Long Term Stability
Standby Current Drain
Input Voltage Range
Output Voltage Range
Input-Output Voltage Differential
θ
JA
θ
JA
θ
JA
θ
JA
θ
JC
Molded DIP
Cavity DIP
H10C Board Mount in Still Air
H10C Board Mount in 400 LF/Min Air Flow
150
165
66
22
165
66
22
I
L
= 0, V
IN
= 30V
9.5
2.0
3.0
BW = 100 Hz to 10 kHz, C
REF
= 0
BW = 100 Hz to 10 kHz, C
REF
= 5 µF
0˚C
≤
T
A
≤
+70˚C
f = 50 Hz to 10 kHz, C
REF
= 0
f = 50 Hz to 10 kHz, C
REF
= 5 µF
−55˚C
≤
T
A
≤
+125˚C
0˚C
≤
T
A
≤
+70˚C
R
SC
= 10Ω, V
OUT
= 0
74
86
0.002 0.015
0.003 0.015
65
6.95 7.15
86
2.5
0.05
1.7
3.5
40
37
38
9.5
2.0
3.0
105
65
7.35 6.80 7.15
86
2.5
0.05
1.7
4.0
40
37
38
7.50
0.02
0.03
LM723
Typ
0.01
Max Min
0.1
0.3
0.3
0.2
0.15
0.6
0.6
74
86
0.1
0.03
0.5
0.2
LM723C
Typ
0.01
Max
0.1
% V
OUT
% V
OUT
% V
OUT
% V
OUT
% V
OUT
% V
OUT
% V
OUT
dB
dB
%/˚C
%/˚C
mA
V
µVrms
µVrms
%/1000 hrs
mA
V
V
V
˚C/W
˚C/W
˚C/W
˚C/W
˚C/W
Units
Load 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:
See derating curves for maximum power rating above 25˚C.
Note 3:
Unless otherwise specified, T
A
= 25˚C, V
IN
= V
+
= V
C
= 12V, V
−
= 0, V
OUT
= 5V, I
L
= 1 mA, R
SC
= 0, C
1
= 100 pF, C
REF
= 0 and divider impedance as
seen by error amplifier
≤
10 kΩ connected as shown in
Figure 1.
Line and load regulation specifications are given for the condition of constant chip temperature. Tem-
perature drifts must be taken into account separately for high dissipation conditions.
Note 4:
L
1
is 40 turns of No. 20 enameled copper wire wound on Ferroxcube P36/22-3B7 pot core or equivalent with 0.009 in. air gap.
Note 5:
Figures in parentheses may be used if R1/R2 divider is placed on opposite input of error amp.
Note 6:
Replace R1/R2 in figures with divider shown in
Figure 13.
Note 7:
V
+
and V
CC
must be connected to a +3V or greater supply.
Note 8:
For metal can applications where V
Z
is required, an external 6.2V zener diode should be connected in series with V
OUT
.
3
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