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1、LM723HIGH PRECISION VOLTAGE REGULATOR INPUT VOLTAGE UP TO 40V OUTPUT VOLTAGE ADJUSTABLE FROM 2 TO 37V POSITIVE OR NEGATIVE SUPPLY OPERATIONPlastic DIP-14SO-14 SERIES, SHUNT, SWITCHING OR FLOATING OPERATION OUTPUT CURRENT TO 150mA WITHOUT EXTERNAL PASS TRANSISTOR ADJUSTABLE CURRENT LIMITINGDESCRIPTIO
2、NThe LM723 is a monolithic integrated programmable voltage regulator, assembled in 14-lead dual in-line plastic and SO-14 micropackage. The circuit provides internal current limiting. When the output current excedes 150mA an external NPN or PNP pass element may be used Provisions are made for adjust
3、able current limiting and remote shut-down.BLOCK DIAGRAMSeptember 19981/12LM723September 1998#/12LM723September 1998#/12LM723ABSOLUTE MAXIMUM RATINGSSymbolParameterValueUnitLM723LM723CViDC Input Volage4040VAVi-oDropout Voltage4040VIoOutput Current150150mAIrefCurrent from Vret1525mATopOperating Tempe
4、rature-55 to 1250 to 70CTstgStorage Temperature65 to 150-65 to 150CTjJunction Temperature150125CABSOLUTE MAXIMUM RATINGSSymbolParameterPlastic DIP-14SO-14UnitRthj-ambThermal Resistance Junction AmbientMax200160C/WPIN CONNECTION (top views)-(1UI MCCURRENT!91OlFREQUEfCYUMir I1i比NON- r INVERT.INPUT 15*
5、)5畑69）号781 -ORDER CODESTypePlastic DIP-14SO-14LM723LM723NLM723CLM723CNLM723CDREGULATED OUTPUTTEST CIRCUIT (pin configuration relative to the plastic package)Vi = 12V VO = 5VIo = 1mARi/R2 10KQELECTRICAL CHARACTERISTICS FOR LM723 (refer to the test circuits, Tamb = 25 C, unless otherwise specified)Sym
6、bolParameterTest ConditionsMin.TypMax.UnitaVo/aViLine RegulationVi = 12to15VVi = 12to40VVj = 12to15V-55PC S Tamb S 125C0.010.020.10.20.3%AVo/VoLoad Regulationl0 = 1 to 50 mAIo = 1 to 10 mA -55CTamb125C0.030.150.6%VrefReference VoltageIref = 160pA6.957.157.35VSVRSupply Voltage Rejectionf=100Hz tolOKH
7、z Cref = 0 f = 100Hz to 10 KHz Gef = 5pF7486dB dBaVo/aTOutput Voltage Drift150ppm/CIseOutput Current LimitR$c = 10O Vo = 065mAViInput Voltage Range9.540VVoOutput Voltage Range237VVo-Vi338VIdQuiescent CurrentVi = 30V lo = 0mA2.35mAKvhLong Term Stability0.1%/1000 hrseNOutput Noise VoltageBW = 100 Hz t
8、o 10 KHz Cref = 0 BW = 100 Hz to 10 KHz Cref = 5 pF202.5mVELECTRICAL CHARACTERISTICS FOR LM723C (refer to the test circuits, Tamb = 25 C, unless otherwise specified)SymbolParameterTest ConditionsMinTypMax.UnitAVo/AViLine RegulationVj = 12to15VVi = 12 to 40VVi = 12to15V0C Tant 7(f C0.010.1%Vo/V。Load
9、RegulationIo = 1 to 50 mAl0 = 1 to 10mA 0CTambFigure 9 : Quiesce nt Drain Current vs. Input Voltage.Figure 10 : LineTransient Response.Figure 11 : Load Transient Response.Figure 12 : Output Impedance vs Frequency.Q#/12LM723TABLE 1: Resistor Values (KQ) for standard Output VoltagesOutput VoltageAppli
10、cable FiguresFixed Output! 5%Output Adjustable 10% R1R2R1P1R2+313, 16, 17, 18. 21,234.123.011.80.51.2+513, 16, 17t 1 & 21r 232.154.990.750.52.2+613, 16, 17t 18. 21,231.156.040.50.52.7+914, 16, 17t 1 & 21,231.877.150.7512.7+ 1214, 16, 17. 18, 21,234.877.15213+ 1514, 16, 17, 18. 21,237.877.153.313+281
11、4, 16, 17t 18. 21,23217.155.612+45193.5748.72.21039+75193.5778.72.210684-100193.571022 21091+250193.572552.2102406“153.572.431.20.50.759153.485.361.20.52-12153.578.451.20.53.3-15153.6511.51.20.54.3-28153.5724.31.20.51045203.5721.22.21033100203.5797.62.21091-250203.572492.210240Note:* Replace R1/R2 d
12、ivider with the circuit of fig24 ” V+ must be connected to a +3V or greater supply.TABLE 2: Formulae for Intermediate Output VoltagesOutputs from +2 to +7VFig.13, 16? 17, 18 21, 23Outputs from +4 to +250V Fig.19Vo = |-WefxR2RlJR3=R4Current Limiting1VsENSElimit = 5nscOutputs from +7 to +37VFig.14, 16
13、, 17, 1 & 21, 23 wv Ri + R2Vo = VrefX 煦Outputs from -6 t(Fig. 15, 20 V。怜矇)-250V；R3 二 R4Foldback Current Limiting1Vo R3 VSENSE(R3 + R4ilKNEE=RscR4XRscR4.VSENSE. R3 + R4，SH0RT ckt=-rx_rJ9/12LM723APPLICATION INFORMATION (pin numbers relative to the plastic package).#/12LM723#/12LM723Figure 13 : Basic L
14、ow Voltaqe Requlator (Vo = 2 to 7V).Figure 14 : Basic High Voltage Regulator (Vo =7 to37V).#/12LM723#/12LM723REGULATED OUTPUTREGULATED OUrPLT#/12LM723Note; Rj 5_ for minimum temperature drift. R、+ R2R3 may be eliminated for minimum component count.R、x甩Note; Ra _ for minimum temperature drift. Ki + r
15、?R3 may be eliminated for minimum component count.Typical performanceRegulated Output Voltage5VUne Regulation (aVi = 3V)0.5mVLoad Regulation (Al。= 50mA)1.5mVTypical performanceRegulated Output Voltage15VLine Regulation AV. = 3V)1.5mVLoad Regulation (aIq = 50mA)4.5mV#/12LM723#/12LM723Figure 15 : Nega
16、tive Voltage Regulator.Figure 16 : Positive Voltage Regulator (externalTypical performanceRegulated Output Voltage十 15VUne Regulation (aVi = 3V)1.5mVLoad Regulation (Alo = 1A)15mV11/12LM723#/12LM723APPLICATION INFORMATION (continued).#/12LM723#/12LM723Figure 17 : Positive Voltage Regulator (External
17、 PNP Pass Transistor)Typical performanceRegulated Output Voltage5VUne Regulation (AV. = 3V)0.5mVLoad Regulation (Alo = 1 A)1.5mVFigure 19 : Positive Floating RegulatorFigure 18 : Foldbackcurrent limitingSCMOCCTypical performanceRegulated Output Voltage 100 VUne Regulation (aVi = 20V)30 mVLoad Regula
18、tion (Alo = 100 mA)20 mV#/12LM723RrCULATT otrpvrLOG C INPUTFigure 22 : Remote Shutdown Regulator With Current Limiti ngcurrent limiting is not required.APPLICATION INFORMATION (continued).Figure 21 : Positive Switching Regulator13/12LM723#/12LM723Typical performanceRegulated Output Voltage5 VUne Reg
19、ulation (aV. = 30 V)10mVLoad Regulation (Alo = 2 A)80mVTypical performanceRegulated Output Voltage5VLine Regulation (aV. = 3 V)0.5mVLoad Regulation (Alo = 50 mA)1.5 mV#/12LM723#/12LM723Figure 23 : Shunt Regulator.丄IrHSC06751N.LFigure 24 : Output Voltage AdjustTypical performanceRegulated Output Volt
20、age5VLine Regulation (aVi = 10 V)2mVLoad Regulation (Alo = 100 mA)5mVPlastic DIP-14 MECHANICAL DATA-4-bBe11e3Z nP001ADIM.mminchMIN.TYP.MAX.MIN.TYP.MAX.a10.510.020B1.391.650.0550.065b0.50.020b10.250.010D200.787E8.50.335e2.540.100e315.240.600F7.10.280I5.10.201L3.30.130Z1.272.540.0500.100SO-14 MECHANIC
21、AL DATAn n n n n n mu u u u u u uP013GDIM.mminchMIN.TYP.MAX.MIN.TYP.MAX.A1.750.068a10.10.20.0030.007a21.650.064b0.350.460.0130.018b10.190.250.0070.010C0.50.019c145 (typ.)D8.558.750.3360.344E5.86.20.2280.244e1.270.050e37.620.300F3.84.00.1490.157G4.65.30.1810.208L0.51.270.0190.050M0.680.026s8 (max.)17
22、/12LM723Information furnished Is believed to be accurate and reliable However. STMicroelectronics assumes no responslbllity for the consequences of use of such informatlon nor for any Infringement of patents or other rights of third parties which may result from Its use. No license Is granted by imp
23、lication or otherwise under any pate nt or patent rights of STMicroelectronics. Specification mentioned In this publicatl on are subject to change without notice. This publication supersedes and replaces all Informatlon previously supplied STMicroelectronics products are not authorized for use as cr
24、ttlcal comp on ents in life support devices or systems without express written approval of STMicroelectronics.The ST logo Is a trademark of STMicroelectronics1998 STMicroelectronics - Printed In Italy - All Rights ReservedSTMicroelectronics GROUP OF COMPANIESAustralia Brazil - Canada China France Germany Italy Japan - Koroa Malaysia Malta Mexico Morocco Tho Netherlands -Singapore Spain Sweden Switzerland Taiwan Thailand United Kingdom U.S.A.#/12