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LM723, LM723C

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SNVS765C –JUNE 1999–REVISED APRIL 2013

LM723/LM723C Voltage Regulator

Check for Samples: LM723, LM723C

FEATURES

DESCRIPTION

The LM723/LM723C is a voltage regulator designed

• 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

Please 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.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

Summary of content (21 pages)

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LM723, LM723C www.ti.com SNVS765C – JUNE 1999 – REVISED APRIL 2013 LM723/LM723C Voltage Regulator Check for Samples: LM723, LM723C FEATURES DESCRIPTION • The LM723/LM723C is a voltage regulator designed primarily 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 features extremely low standby current drain, and provision is made for either linear or foldback current limiting.
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LM723, LM723C SNVS765C – JUNE 1999 – REVISED APRIL 2013 www.ti.com 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.
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LM723, LM723C www.ti.com SNVS765C – JUNE 1999 – REVISED APRIL 2013 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.
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LM723, LM723C SNVS765C – JUNE 1999 – REVISED APRIL 2013 www.ti.com ELECTRICAL CHARACTERISTICS(1)(2)(3)(4) (continued) Parameter Conditions LM723 Min Average Temperature Coefficient of Output Voltage ( (5)) −55°C ≤ TA ≤ +125°C LM723C Typ Max 0.002 0.015 Min Reference Voltage Output Noise Voltage 0.003 RSC = 10Ω, VOUT = 0 65 6.95 0.015 65 7.35 6.80 7.15 %/°C mA 7.50 V μVrms BW = 100 Hz to 10 kHz, CREF = 0 86 86 BW = 100 Hz to 10 kHz, CREF = 5 μF 2.5 2.5 μVrms 0.05 0.
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LM723, LM723C www.ti.com SNVS765C – JUNE 1999 – REVISED APRIL 2013 TYPICAL PERFORMANCE CHARACTERISTICS Load Regulation Characteristics with Current Limiting Load Regulation Characteristics with Current Limiting Figure 5. Figure 6. Load & Line Regulation vs Input-Output Voltage Differential Current Limiting Characteristics Figure 7. Figure 8. Current Limiting Characteristics vs Junction Temperature Standby Current Drain vs Input Voltage Figure 9. Figure 10.
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LM723, LM723C SNVS765C – JUNE 1999 – REVISED APRIL 2013 www.ti.com TYPICAL PERFORMANCE CHARACTERISTICS (continued) Line Transient Response Load Transient Response Figure 11. Figure 12. Output Impedence vs Frequency Figure 13.
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LM723, LM723C www.ti.com SNVS765C – JUNE 1999 – REVISED APRIL 2013 MAXIMUM POWER RATINGS Noise vs Filter Capacitor (CREF in Circuit of Figure 4) (Bandwidth 100 Hz to 10 kHz) LM723 Power Dissipation vs Ambient Temperature Figure 14. Figure 15. LM723C Power Dissipation vs Ambient Temperature Figure 16.
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LM723, LM723C SNVS765C – JUNE 1999 – REVISED APRIL 2013 www.ti.com Table 1. Resistor Values (kΩ) for Standard Output Voltage Positive Output Voltage (1) (2) (3) Applicable Figures Fixed Output ±5% Output Adjustable ±10% (1) Negative Output Voltage See (2) R1 R2 R1 P1 R2 +3.0 Figure 4, Figure 19, Figure 21, Figure 24, Figure 27 (Figure 19) 4.12 3.01 1.8 0.5 1.2 +100 +3.6 Figure 4, Figure 19, Figure 21, Figure 24, Figure 27 (Figure 19) 3.57 3.65 1.5 0.5 1.5 +5.
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LM723, LM723C www.ti.com SNVS765C – JUNE 1999 – REVISED APRIL 2013 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.
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LM723, LM723C SNVS765C – JUNE 1999 – REVISED APRIL 2013 www.ti.com 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.
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LM723, LM723C www.ti.com SNVS765C – JUNE 1999 – REVISED APRIL 2013 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.
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LM723, LM723C SNVS765C – JUNE 1999 – REVISED APRIL 2013 www.ti.com 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.
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LM723, LM723C www.ti.com SNVS765C – JUNE 1999 – REVISED APRIL 2013 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.
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LM723, LM723C SNVS765C – JUNE 1999 – REVISED APRIL 2013 www.ti.com 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) 14 (1) Replace R1/R2 in figures with divider shown in Figure 28.
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LM723, LM723C www.ti.
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LM723, LM723C SNVS765C – JUNE 1999 – REVISED APRIL 2013 www.ti.com REVISION HISTORY Changes from Revision B (April 2013) to Revision C • 16 Page Changed layout of National Data Sheet to TI format ..........................................................................................................
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 25-Feb-2014 (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.
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MECHANICAL DATA MMBC006 – MARCH 2001 LME (O–MBCY–W10) METAL CYLINDRICAL PACKAGE ø 0.370 (9,40) 0.335 (8,51) ø 0.335 (8,51) 0.305 (7,75) 0.040 (1,02) 0.010 (0,25) 0.185 (4,70) 0.165 (4,19) 0.040 (1,02) 0.010 (0,25) 0.500 (12,70) MIN Seating Plane ø ø 0.021 (0,53) 0.016 (0,41) 0.160 (4,06) 0.120 (3,05) 0.120 (3,05) 0.110 (2,79) 4 3 0.034 (0,86) 0.028 (0,71) 36° 5 2 6 1 10 7 9 8 0.230 (5,84) 0.045 (1,14) 0.029 (0,74) 4202488/A 03/01 NOTES: A. B. C. D. E.
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MECHANICAL DATA NFF0014A N0014A N14A (Rev G) www.ti.
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