Datasheet

LM723, LM723C
SNVS765C –JUNE 1999–REVISED APRIL 2013 www.ti.com
Table 1. Resistor Values (kΩ) for Standard Output Voltage
Output 5% Output
Fixed Fixed
Positive Negative
Applicable Figures Adjustable Adjustable
Applicable
Output ±5% Output ±5%
Output Output
±10%
(1)
±10%
Figures
Voltage Voltage
See
(2)
R1 R2 R1 P1 R2 R1 R2 R1 P1 R2
Figure 4, Figure 19,
+3.0 Figure 21, Figure 24, 4.12 3.01 1.8 0.5 1.2 +100 Figure 22 3.57 102 2.2 10 91
Figure 27 (Figure 19)
Figure 4, Figure 19,
+3.6 Figure 21, Figure 24, 3.57 3.65 1.5 0.5 1.5 +250 Figure 22 3.57 255 2.2 10 240
Figure 27 (Figure 19)
Figure 4, Figure 19,
Figure 18,
+5.0 Figure 21, Figure 24, 2.15 4.99 0.75 0.5 2.2 −6
(3)
3.57 2.43 1.2 0.5 0.75
(Figure 25)
Figure 27 (Figure 19)
Figure 4, Figure 19,
Figure 18,
+6.0 Figure 21, Figure 24, 1.15 6.04 0.5 0.5 2.7 −9 3.48 5.36 1.2 0.5 2.0
Figure 25
Figure 27 (Figure 19)
Figure 17, Figure 19,
Figure 18,
+9.0 (Figure 19, Figure 21, 1.87 7.15 0.75 1.0 2.7 −12 3.57 8.45 1.2 0.5 3.3
Figure 25
Figure 24, Figure 27)
Figure 17, Figure 19,
Figure 18,
+12 (Figure 19, Figure 21, 4.87 7.15 2.0 1.0 3.0 −15 3.65 11.5 1.2 0.5 4.3
Figure 25
Figure 24, Figure 27)
Figure 17, Figure 19,
Figure 18,
+15 (Figure 19, Figure 21, 7.87 7.15 3.3 1.0 3.0 −28 3.57 24.3 1.2 0.5 10
Figure 25
Figure 24, Figure 27)
Figure 17, Figure 19,
+28 (Figure 19, Figure 21, 21.0 7.15 5.6 1.0 2.0 −45 Figure 23 3.57 41.2 2.2 10 33
Figure 24, Figure 27)
+45 Figure 22 3.57 48.7 2.2 10 39 −100 Figure 23 3.57 97.6 2.2 10 91
+75 Figure 22 3.57 78.7 2.2 10 68 −250 Figure 23 3.57 249 2.2 10 240
(1) Replace R1/R2 in figures with divider shown in Figure 28.
(2) Figures in parentheses may be used if R1/R2 divider is placed on opposite input of error amp.
(3) V
+
and V
CC
must be connected to a +3V or greater supply.
Table 2. Formulae for Intermediate Output Voltages
Outputs from +2 to +7 volts Outputs from +4 to +250 volts Current Limiting
(Figure 4 Figure 19 Figure 20 (Figure 22)
Figure 21 Figure 24 Figure 27
Outputs from +7 to +37 volts Outputs from −6 to −250 volts Foldback Current Limiting
(Figure 17 Figure 19 Figure 20 (Figure 18 Figure 23 Figure 25)
Figure 21 Figure 24 Figure 27)
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