LM723J National Semiconductor, LM723J Datasheet

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LM723J

Manufacturer Part Number
LM723J
Description
Voltage Regulator, Package: TO-5, Pin Nb=10
Manufacturer
National Semiconductor
Datasheet

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© 1999 National Semiconductor Corporation
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.
Connection Diagrams
Order Number LM723J/883 or LM723CN
See NS Package J14A or N14A
Dual-In-Line Package
Top View
DS008563
DS008563-2
Features
n 150 mA output current without external pass transistor
n Output currents in excess of 10A possible by adding
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
Note: Pin 5 connected to case.
external transistors
Order Number LM723H, LM723H/883 or LM723CH
See NS Package H10C
Metal Can Package
Top View
DS008563-3
www.national.com
June 1999

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LM723J Summary of contents

Page 1

... LM723C has its performance guaranteed over a 0˚C to +70˚C temperature range, instead of −55˚C to +125˚C. Connection Diagrams Dual-In-Line Package DS008563-2 Top View Order Number LM723J/883 or LM723CN See NS Package J14A or N14A © 1999 National Semiconductor Corporation DS008563 Features n 150 mA output current without external pass transistor ...

Page 2

Connection Diagrams (Continued) Equivalent Circuit * *Pin numbers refer to metal can package. Typical Application for minimum temperature drift. Typical Performance Regulated Output Voltage = 3V) Line Regulation ( mA) Load Regulation ( I L www.national.com ...

Page 3

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. (Note 10) + − Pulse Voltage from (50 ms) + − Continuous Voltage from Input-Output Voltage Differential Maximum Amplifier Input Voltage (Either Input) Maximum Amplifier Input Voltage ...

Page 4

Electrical Characteristics Note 9: Guaranteed by correlation to other tests. Note 10: A military RETS specification is available on request. At the time of printing, the LM723 RETS specification complied with the Min and Max limits in this table. The ...

Page 5

Maximum Power Ratings Noise vs Filter Capacitor (C in Circuit of Figure 1 ) REF (Bandwidth 100 kHz) DS008563-31 TABLE 1. Resistor Values (k ) for Standard Output Voltage Positive Applicable Fixed Output Figures Output ± Voltage ...

Page 6

Typical Applications for minimum temperature drift. R3 may be eliminated for minimum component count. Typical Performance Regulated Output Voltage = 3V) Line Regulation ( mA) Load Regulation ( I L FIGURE 2. Basic High Voltage Regulator ...

Page 7

Typical Applications (Continued) Regulated Output Voltage Line Regulation ( V Load Regulation ( I FIGURE 5. Positive Voltage Regulator Regulated Output Voltage Line Regulation ( V Load Regulation ( I Short Circuit Current DS008563-12 Typical Performance +5V = 3V) 0.5 ...

Page 8

Typical Applications (Continued) Regulated Output Voltage Line Regulation ( V Load Regulation ( I Regulated Output Voltage Line Regulation ( V Load Regulation ( I www.national.com Typical Performance +50V = 20V mA ...

Page 9

Typical Applications (Continued) Regulated Output Voltage Line Regulation ( V Load Regulation ( I FIGURE 9. Positive Switching Regulator Regulated Output Voltage Line Regulation ( V Load Regulation ( I FIGURE 10. Negative Switching Regulator Typical Performance +5V = 30V) ...

Page 10

Typical Applications (Continued) Note: Current limit transistor may be used for shutdown if current limiting is not required. Regulated Output Voltage Line Regulation ( V Load Regulation ( I FIGURE 11. Remote Shutdown Regulator with Current Limiting Regulated Output Voltage ...

Page 11

Typical Applications (Continued) Schematic Diagram DS008563-21 FIGURE 13. Output Voltage Adjust (Note 6) 11 DS008563-1 www.national.com ...

Page 12

Physical Dimensions inches (millimeters) unless otherwise noted Order Number LM723H, LM723H/883 or LM723CH www.national.com Leadless Chip Carrier Package (E) Order Number LM723E/883 NS Package E20A Metal Can Package (H) NS Package H10C 12 ...

Page 13

... Physical Dimensions inches (millimeters) unless otherwise noted (Continued) Ceramic Dual-In-Line Package (J) Order Number LM723J/883 NS Package J14A 13 www.national.com ...

Page 14

... NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant ...

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