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LM723/LM723C Voltage Regulator
Check for Samples: LM723,LM723C
1FEATURES DESCRIPTION
The LM723/LM723C is a voltage regulator designed
2• 150 mA Output Current Without External Pass primarily for series regulator applications. By itself, it
Transistor will supply output currents up to 150 mA; but external
• Output Currents in Excess of 10A Possible by transistors can be added to provide any desired load
Adding External Transistors current. The circuit features extremely low standby
current drain, and provision is made for either linear
• Input Voltage 40V Max or foldback current limiting.
• Output Voltage Adjustable from 2V to 37V The LM723/LM723C is also useful in a wide range of
• Can be Used as Either a Linear or a Switching other applications such as a shunt regulator, a
Regulator current regulator or a temperature controller.
The LM723C is identical to the LM723 except that the
LM723C has its performance ensured over a 0°C to
+70°C temperature range, instead of −55°C to
+125°C.
Connection Diagram
Note: Pin 5 connected to case.
Figure 1. Top View Figure 2. Top View
CDIP Package or PDIP Package TO-100
See Package J or NFF0014A See Package LME
Figure 3. Top View
See Package NAJ0020A
1Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date. Copyright © 1999–2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
LM723, LM723C
SNVS765C –JUNE 1999–REVISED APRIL 2013
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Equivalent Circuit*
*Pin numbers refer to metal can package.
Typical Application
for minimum temperature drift.
Typical Performance
Regulated Output Voltage 5V
Line Regulation (ΔVIN = 3V) 0.5mV
Load Regulation (ΔIL= 50 mA) 1.5mV
Figure 4. Basic Low Voltage Regulator (VOUT = 2 to 7 Volts)
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These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
ABSOLUTE MAXIMUM RATINGS(1)(2)
Pulse Voltage from V+to V−(50 ms) 50V
Continuous Voltage from V+to V−40V
Input-Output Voltage Differential 40V
Maximum Amplifier Input Voltage
(Either Input) 8.5V
Maximum Amplifier Input Voltage
(Differential) 5V
Current from VZ25 mA
Current from VREF 15 mA
Internal Power Dissipation
Metal Can (3) 800 mW
CDIP (3) 900 mW
PDIP (3) 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
PDIP −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 kΩin series with 100 pF)
(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 ensure specific performance limits.
(2) 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 LM723E, H, and J may also be procured as a Standard Military Drawing.
(3) See derating curves for maximum power rating above 25°C.
ELECTRICAL CHARACTERISTICS(1)(2)(3)(4)
Parameter Conditions LM723 LM723C Units
Min Typ Max Min Typ Max
Line Regulation VIN = 12V to VIN = 15V 0.01 0.1 0.01 0.1 % VOUT
−55°C ≤TA≤+125°C 0.3 % VOUT
0°C ≤TA≤+70°C 0.3 % VOUT
VIN = 12V to VIN = 40V 0.02 0.2 0.1 0.5 % VOUT
Load Regulation IL= 1 mA to IL= 50 mA 0.03 0.15 0.03 0.2 % VOUT
−55°C ≤TA≤+125°C 0.6 % VOUT
0°C ≤TA≤+70°C 0.6 % VOUT
Ripple Rejection f = 50 Hz to 10 kHz, CREF = 0 74 74 dB
f = 50 Hz to 10 kHz, CREF = 5 μF 86 86 dB
(1) Unless otherwise specified, TA= 25°C, VIN = V+= VC= 12V, V−= 0, VOUT = 5V, IL= 1 mA, RSC = 0, C1= 100 pF, CREF = 0 and divider
impedance as seen by error amplifier ≤10 kΩconnected as shown in Figure 4. Line and load regulation specifications are given for the
condition of constant chip temperature. Temperature drifts must be taken into account separately for high dissipation conditions.
(2) 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 LM723E, H, and J may also be procured as a Standard Military Drawing.
(3) Specified by correlation to other tests.
(4) L1is 40 turns of No. 20 enameled copper wire wound on Ferroxcube P36/22-3B7 pot core or equivalent with 0.009 in. air gap.
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ELECTRICAL CHARACTERISTICS(1)(2)(3)(4) (continued)
Parameter Conditions LM723 LM723C Units
Min Typ Max Min Typ Max
Average Temperature Coefficient of −55°C ≤TA≤+125°C 0.002 0.015 %/°C
Output Voltage ((5))0°C ≤TA≤+70°C 0.003 0.015 %/°C
Short Circuit Current Limit RSC = 10Ω, VOUT = 0 65 65 mA
Reference Voltage 6.95 7.15 7.35 6.80 7.15 7.50 V
Output Noise Voltage BW = 100 Hz to 10 kHz, CREF = 0 86 86 μVrms
BW = 100 Hz to 10 kHz, CREF = 5 μF 2.5 2.5 μVrms
Long Term Stability 0.05 0.05 %/1000
hrs
Standby Current Drain IL= 0, VIN = 30V 1.7 3.5 1.7 4.0 mA
Input Voltage Range 9.5 40 9.5 40 V
Output Voltage Range 2.0 37 2.0 37 V
Input-Output Voltage Differential 3.0 38 3.0 38 V
θJA PDIP 105 °C/W
θJA CDIP 150 °C/W
θJA H10C Board Mount in Still Air 165 165 °C/W
θJA H10C Board Mount in 400 LF/Min Air Flow 66 66 °C/W
θJC 22 22 °C/W
(5) For metal can applications where VZis required, an external 6.2V zener diode should be connected in series with VOUT.
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TYPICAL PERFORMANCE CHARACTERISTICS
Load Regulation Load Regulation
Characteristics with Characteristics with
Current Limiting Current Limiting
Figure 5. Figure 6.
Load & Line Regulation vs
Input-Output Voltage Current Limiting
Differential Characteristics
Figure 7. Figure 8.
Current Limiting
Characteristics vs Standby Current Drain vs
Junction Temperature Input Voltage
Figure 9. Figure 10.
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TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Line Transient Response Load Transient Response
Figure 11. Figure 12.
Output Impedence vs
Frequency
Figure 13.
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MAXIMUM POWER RATINGS
Noise
vs
Filter Capacitor LM723
(CREF in Circuit of Figure 4) Power Dissipation vs
(Bandwidth 100 Hz to 10 kHz) Ambient Temperature
Figure 14. Figure 15.
LM723C
Power Dissipation vs
Ambient Temperature
Figure 16.
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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 VCC 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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TYPICAL APPLICATIONS
for minimum temperature drift.
R3 may be eliminated for minimum component count.
Typical Performance
Regulated Output Voltage 15V
Line Regulation (ΔVIN = 3V) 1.5 mV
Load Regulation (ΔIL= 50 mA) 4.5 mV
Figure 17. Basic High Voltage Regulator (VOUT = 7 to 37 Volts)
Typical Performance
Regulated Output Voltage −15V
Line Regulation (ΔVIN = 3V) 1 mV
Load Regulation (ΔIL= 100 mA) 2 mV
Figure 18. Negative Voltage Regulator
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Typical Performance
Regulated Output Voltage +15V
Line Regulation (ΔVIN = 3V) 1.5 mV
Load Regulation (ΔIL= 1A) 15 mV
Figure 19. Positive Voltage Regulator (External NPN Pass Transistor)
Typical Performance
Regulated Output Voltage +5V
Line Regulation (ΔVIN = 3V) 0.5 mV
Load Regulation (ΔIL= 1A) 5 mV
Figure 20. Positive Voltage Regulator (External PNP Pass Transistor)
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Typical Performance
Regulated Output Voltage +5V
Line Regulation (ΔVIN = 3V) 0.5 mV
Load Regulation (ΔIL= 10 mA) 1 mV
Short Circuit Current 20 mA
Figure 21. Foldback Current Limiting
Typical Performance
Regulated Output Voltage +50V
Line Regulation (ΔVIN = 20V) 15 mV
Load Regulation (ΔIL= 50 mA) 20 mV
Figure 22. Positive Floating Regulator
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Typical Performance
Regulated Output Voltage −100V
Line Regulation (ΔVIN = 20V) 30 mV
Load Regulation (ΔIL= 100 mA) 20 mV
Figure 23. Negative Floating Regulator
Typical Performance
Regulated Output Voltage +5V
Line Regulation (ΔVIN = 30V) 10 mV
Load Regulation (ΔIL= 2A) 80 mV
Figure 24. Positive Switching Regulator
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Typical Performance
Regulated Output Voltage −15V
Line Regulation (ΔVIN = 20V) 8 mV
Load Regulation (ΔIL= 2A) 6 mV
Figure 25. Negative Switching Regulator
Note: Current limit transistor may be used for shutdown if current limiting is not required.
Typical Performance
Regulated Output Voltage +5V
Line Regulation (ΔVIN = 3V) 0.5 mV
Load Regulation (ΔIL= 50 mA) 1.5 mV
Figure 26. Remote Shutdown Regulator with Current Limiting
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Regulated Output Voltage +5V
Line Regulation (ΔVIN = 10V) 0.5 mV
Load Regulation (ΔIL= 100 mA) 1.5 mV
Figure 27. Shunt Regulator
Figure 28. Output Voltage Adjust (1)
(1) Replace R1/R2 in figures with divider shown in Figure 28.
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REVISION HISTORY
Changes from Revision B (April 2013) to Revision C Page
• Changed layout of National Data Sheet to TI format .......................................................................................................... 15
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PACKAGE OPTION ADDENDUM
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Addendum-Page 1
PACKAGING INFORMATION
Orderable Device Status
(1)
Package Type Package
Drawing Pins Package
Qty Eco Plan
(2)
Lead/Ball Finish
(6)
MSL Peak Temp
(3)
Op Temp (°C) Device Marking
(4/5)
Samples
LM723CH ACTIVE TO-100 LME 10 500 TBD Call TI Call TI 0 to 70 ( LM723CH, LM723CH
)
LM723CH/NOPB ACTIVE TO-100 LME 10 500 Green (RoHS
& no Sb/Br) Call TI Level-1-NA-UNLIM 0 to 70 ( LM723CH, LM723CH
)
LM723CN/NOPB NRND PDIP NFF 14 25 Green (RoHS
& no Sb/Br) CU SN Level-1-NA-UNLIM 0 to 70 LM723CN
LM723H ACTIVE TO-100 LME 10 500 TBD Call TI Call TI -55 to 150 ( LM723H, LM723H)
LM723H/NOPB ACTIVE TO-100 LME 10 500 Green (RoHS
& no Sb/Br) Call TI Level-1-NA-UNLIM -55 to 150 ( LM723H, LM723H)
(1) The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may
reference these types of products as "Pb-Free".
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of <=1000ppm threshold. Antimony trioxide based
flame retardants must also meet the <=1000ppm threshold requirement.
(3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
(4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device.
(5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation
of the previous line and the two combined represent the entire Device Marking for that device.
(6) Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead/Ball Finish values may wrap to two lines if the finish
value exceeds the maximum column width.
PACKAGE OPTION ADDENDUM
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Addendum-Page 2
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
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PACKAGE OUTLINE
C
A
9.40
8.51
( 3.56)
STAND-OFF
0.86
0.71
5.84
2.92
8.51
7.75
5.72 MAX
4.70
4.19
1.02 MAX
10X 12.7 MIN
10X 0.53
0.41
STAND-OFF
1.02
0.25
1.14
0.74
36 TYP
TO-CAN - 5.72 mm max heightLME0010A
METAL CYLINDRICAL PACKAGE
4220604/A 05/2017
NOTES:
1. All linear dimensions are in millimeters. Any dimensions in parenthesis are for reference only. Dimensioning and tolerancing
per ASME Y14.5M.
2. This drawing is subject to change without notice.
3. Reference JEDEC registration MO-006/TO-100.
0.25 C A
SEATING PLANE
1
2
3
456
7
10
8
9
SCALE 0.800
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EXAMPLE BOARD LAYOUT
0.07 MAX
ALL AROUND
9X 0.07 MAX
ALL AROUND
( 5.84)
( 1.4)
9X ( 1.4)
METAL
10X ( 0.8)
VIA
(R0.05)
TYP
(36 ) TYP
TO-CAN - 5.72 mm max heightLME0010A
METAL CYLINDRICAL PACKAGE
4220604/A 05/2017
LAND PATTERN EXAMPLE
NON-SOLDER MASK DEFINED
SCALE: 12X
9X SOLDER MASK
OPENING
SOLDER MASK
OPENING
METAL
1
2
3
4
5
6
7
10
8
9
MECHANICAL DATA
N0014A
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N14A (Rev G)
NFF0014A
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