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PDF LM723C Data sheet ( Hoja de datos )
| Número de pieza | LM723C | |
| Descripción | Voltage Regulator | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LM723C (archivo pdf) en la parte inferior de esta página. Total 14 Páginas | ||
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June 1999
LM723/LM723C
Voltage Regulator
General Description
The LM723/LM723C is a voltage regulator designed prima-
rily for series regulator applications. By itself, it will supply
output currents up to 150 mA; but external transistors can be
added to provide any desired load current. The circuit fea-
tures extremely low standby current drain, and provision is
made for either linear or foldback current limiting.
The LM723/LM723C is also useful in a wide range of other
applications such as a shunt regulator, a current regulator or
a temperature controller.
The LM723C is identical to the LM723 except that the
LM723C has its performance guaranteed over a 0˚C to
+70˚C temperature range, instead of −55˚C to +125˚C.
Features
n 150 mA output current without external pass transistor
n Output currents in excess of 10A possible by adding
external transistors
n Input voltage 40V max
n Output voltage adjustable from 2V to 37V
n Can be used as either a linear or a switching regulator
Connection Diagrams
Dual-In-Line Package
Metal Can Package
DS008563-2
Top View
Order Number LM723J/883 or LM723CN
See NS Package J14A or N14A
DS008563-3
Note: Pin 5 connected to case.
Top View
Order Number LM723H, LM723H/883 or LM723CH
See NS Package H10C
© 1999 National Semiconductor Corporation DS008563
www.national.com
1 page  
Maximum Power Ratings
Noise vs Filter Capacitor
(CREF in Circuit of Figure 1)
(Bandwidth 100 Hz to 10 kHz)
LM723
Power Dissipation vs
Ambient Temperature
LM723C
Power Dissipation vs
Ambient Temperature
Positive
Output
Voltage
+3.0
+3.6
+5.0
+6.0
+9.0
+12
+15
+28
+45
+75
DS008563-31
DS008563-32
TABLE 1. Resistor Values (kΩ) for Standard Output Voltage
DS008563-33
Applicable
Figures
(Note 5)
1, 5, 6, 9, 12 (4)
1, 5, 6, 9, 12 (4)
1, 5, 6, 9, 12 (4)
1, 5, 6, 9, 12 (4)
2, 4, (5, 6, 9, 12)
2, 4, (5, 6, 9, 12)
2, 4, (5, 6, 9, 12)
2, 4, (5, 6, 9, 12)
7
7
Fixed
Output
±5%
R1 R2
4.12 3.01
3.57 3.65
2.15 4.99
1.15 6.04
1.87 7.15
4.87 7.15
7.87 7.15
21.0 7.15
3.57 48.7
3.57 78.7
Output
Adjustable
±10% (Note 6)
R1 P1 R2
1.8 0.5 1.2
1.5 0.5 1.5
0.75 0.5 2.2
0.5 0.5 2.7
0.75 1.0 2.7
2.0 1.0 3.0
3.3 1.0 3.0
5.6 1.0 2.0
2.2 10 39
2.2 10 68
Negative
Output
Voltage
+100
+250
−6 (Note 7)
−9
−12
−15
−28
−45
−100
−250
Applicable
Figures
7
7
3, (10)
3, 10
3, 10
3, 10
3, 10
8
8
8
Fixed
Output
±5%
R1 R2
3.57 102
3.57 255
3.57 2.43
3.48 5.36
3.57 8.45
3.65 11.5
3.57 24.3
3.57 41.2
3.57 97.6
3.57 249
5% Output
Adjustable
±10%
R1 P1 R2
2.2 10 91
2.2 10 240
1.2 0.5 0.75
1.2 0.5 2.0
1.2 0.5 3.3
1.2 0.5 4.3
1.2 0.5 10
2.2 10 33
2.2 10 91
2.2 10 240
TABLE 2. Formulae for Intermediate Output Voltages
Outputs from +2 to +7 volts
(Figures 1, 4, 5, 6, 9, 12
Outputs from +4 to +250 volts
(Figure 7)
Current Limiting
Outputs from +7 to +37 volts
(Figures 2, 4, 5, 6, 9, 12)
Outputs from −6 to −250 volts
(Figures 3, 8, 10)
Foldback Current Limiting
5 www.national.com
5 Page 
Typical Applications (Continued)
Schematic Diagram
DS008563-21
FIGURE 13. Output Voltage Adjust
(Note 6)
DS008563-1
11 www.national.com
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet LM723C.PDF ] | |
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