LM4250中文资料

LM4040Precision Micropower Shunt Voltage ReferenceGeneral DescriptionIdeal for space critical applications,the LM4040precision voltage reference is available in the sub-miniature SC70and SOT-23surface-mount package.The LM4040’s advanced design eliminates the need for an external stabilizing capaci-tor while ensuring stability with any capacitive load,thus making the LM4040easy to use.Further reducing design effort is the availability of several fixed reverse breakdown voltages:2.048V,2.500V,3.000V,4.096V,5.000V,8.192V,and 10.000V.The minimum operating current increases from 60µA for the LM4040-2.5to 100µA for the LM4040-10.0.All versions have a maximum operating current of 15mA.The LM4040utilizes fuse and zener-zap reverse breakdown voltage trim during wafer sort to ensure that the prime parts have an accuracy of better than ±0.1%(A grade)at 25˚C.Bandgap reference temperature drift curvature correction and low dynamic impedance ensure stable reverse break-down voltage accuracy over a wide range of operating tem-peratures and currents.Also available is the LM4041with two reverse breakdown voltage versions:adjustable and 1.2V.Please see the LM4041data sheet.Featuresn Small packages:SOT-23,TO-92and SC70n No output capacitor requiredn Tolerates capacitive loadsn Fixed reverse breakdown voltages of 2.048V,2.500V,3.000V,4.096V,5.000V,8.192V,and 10.000VKey Specifications (LM4040-2.5)j Output voltage tolerance(A grade,25˚C)±0.1%(max)j Low output noise(10Hz to 10kHz)35µV rms (typ)j Wide operating current range 60µA to 15mA j Industrial temperature range −40˚C to +85˚C j Extended temperature range −40˚C to +125˚C j Low temperature coefficient100ppm/˚C (max)Applicationsn Portable,Battery-Powered Equipment n Data Acquisition Systems n Instrumentation n Process Controln Energy Management n Product Testing n AutomotivenPrecision Audio ComponentsConnection DiagramsSOT-23TO-92SC7001132301*This pin must be left floating or connected to pin 2.Top ViewSee NS Package Number MF03A (JEDEC Registration TO-236AB)01132303Bottom ViewSee NS Package Number Z03A01132330*This pin must be left floating or connected to pin1.Top ViewSee NS Package Number MAA05AApril 2005LM4040Precision Micropower Shunt Voltage Reference©2005National Semiconductor Corporation Ordering InformationIndustrial Temperature Range (−40˚C to +85˚C)Reverse Breakdown Voltage Tolerance at 25˚C and Average Reverse Breakdown Voltage Temperature CoefficientPackageNS Package NumberM3(SOT-23)M7(SC70)Z (TO-92)Supplied as 1000Units Tape andReelSupplied as 3000Units tape andReelSupplied as 1000Units Tape andReelSupplied as 3000Units Tape andReel±0.1%,100ppm/˚C max (A grade)LM4040AIM3-2.0LM4040AIM3-2.5LM4040AIM3-3.0LM4040AIM3-4.1LM4040AIM3-5.0LM4040AIM3-8.2LM4040AIM3-10.0LM4040AIM3X-2.0LM4040AIM3X-2.5LM4040AIM3X-3.0LM4040AIM3X-4.1LM4040AIM3X-5.0LM4040AIM3X-8.2LM4040AIM3X-10.0LM4040AIZ-2.0LM4040AIZ-2.5LM4040AIZ-3.0LM4040AIZ-4.1LM4040AIZ-5.0LM4040AIZ-8.2LM4040AIZ-10.0MF03A,Z03A±0.2%,100ppm/˚C max (B grade)LM4040BIM3-2.0LM4040BIM3-2.5LM4040BIM3-3.0LM4040BIM3-4.1LM4040BIM3-5.0LM4040BIM3-8.2LM4040BIM3-10.0LM4040BIM3X-2.0LM4040BIM3X-2.5LM4040BIM3X-3.0LM4040BIM3X-4.1LM4040BIM3X-5.0LM4040BIM3X-8.2LM4040BIM3X-10.0LM4040BIM7-2.0LM4040BIM7-2.5LM4040BIM7-3.0LM4040BIM7-4.1LM4040BIM7-5.0LM4040BIM7X-2.0LM4040BIM7X-2.5LM4040BIM7X-3.0LM4040BIM7X-4.1LM4040BIM7X-5.0LM4040BIZ-2.0LM4040BIZ-2.5LM4040BIZ-3.0LM4040BIZ-4.1LM4040BIZ-5.0LM4040BIZ-8.2LM4040BIZ-10.0MF03A,Z03A,MAA05A ±0.5%,100ppm/˚C max (C grade)LM4040CIM3-2.0LM4040CIM3-2.5LM4040CIM3-3.0LM4040CIM3-4.1LM4040CIM3-5.0LM4040CIM3-8.2LM4040CIM3-10.0LM4040CIM3X-2.0LM4040CIM3X-2.5LM4040CIM3X-3.0LM4040CIM3X-4.1LM4040CIM3X-5.0LM4040CIM3X-8.2LM4040CIM3X-10.0LM4040CIM7-2.0LM4040CIM7-2.5LM4040CIM7-3.0LM4040CIM7-4.1LM4040CIM7-5.0LM4040CIM7X-2.0LM4040CIM7X-2.5LM4040CIM7X-3.0LM4040CIM7X-4.1LM4040CIM7X-5.0LM4040CIZ-2.0LM4040CIZ-2.5LM4040CIZ-3.0LM4040CIZ-4.1LM4040CIZ-5.0LM4040CIZ-8.2LM4040CIZ-10.0MF03A,Z03A,MAA05A ±1.0%,150ppm/˚C max (D grade)LM4040DIM3-2.0LM4040DIM3-2.5LM4040DIM3-3.0LM4040DIM3-4.1LM4040DIM3-5.0LM4040DIM3-8.2LM4040DIM3-10.0LM4040DIM3X-2.0LM4040DIM3X-2.5LM4040DIM3X-3.0LM4040DIM3X-4.1LM4040DIM3X-5.0LM4040DIM3X-8.2LM4040DIM3X-10.0LM4040DIM7-2.0LM4040DIM7-2.5LM4040DIM7-3.0LM4040DIM7-4.1LM4040DIM7-5.0LM4040DIM7X-2.0LM4040DIM7X-2.5LM4040DIM7X-3.0LM4040DIM7X-4.1LM4040DIM7X-5.0LM4040DIZ-2.0LM4040DIZ-2.5LM4040DIZ-3.0LM4040DIZ-4.1LM4040DIZ-5.0LM4040DIZ-8.2LM4040DIZ-10.0MF03A,Z03A,MAA05A ±2.0%,150ppm/˚C max (E grade)LM4040EIM3-2.0LM4040EIM3-2.5LM4040EIM3-3.0LM4040EIM3X-2.0LM4040EIM3X-2.5LM4040EIM3X-3.0LM4040EIM7-2.0LM4040EIM7-2.5LM4040EIM7-3.0LM4040EIM7X-2.0LM4040EIM7X-2.5LM4040EIM7X-3.0LM4040EIZ-2.0LM4040EIZ-2.5LM4040EIZ-3.0MF03A,Z03A,MAA05AL M 4040 2Extended Temperature Range(−40˚C to+125˚C)Reverse BreakdownVoltage Tolerance at25˚C and Average Reverse Breakdown Voltage Temperature CoefficientPackageM3(SOT-23) See NS Package Number MF03A±0.5%,100ppm/˚C max(C grade)LM4040CEM3-2.0,LM4040CEM3-2.5,LM4040CEM3-3.0,LM4040CEM3-5.0±1.0%,150ppm/˚C max(D grade)LM4040DEM3-2.0,LM4040DEM3-2.5,LM4040DEM3-3.0,LM4040DEM3-5.0±2.0%,150ppm/˚C max(E grade)LM4040EEM3-2.0,LM4040EEM3-2.5,LM4040EEM3-3.0LM40403SOT-23AND SC70Package Marking InformationOnly three fields of marking are possible on the SOT-23’s and SC70’s small surface.This table gives the meaning of the three fields.Part Marking Field DefinitionRJA SOT-23only First Field:R2A SOT-23only RKA SOT-23only R4A SOT-23only R =Reference R5A SOT-23onlySecond Field:J =2.048V Voltage Option 2=2.500V Voltage OptionR8A SOT-23only K =3.000V Voltage Option R0A SOT-23only4=4.096V Voltage Option RJB R2B 5=5.000V Voltage Option RKB R4B 8=8.192V Voltage Option R5B 0=10.000V Voltage Option R8B SOT-23only R0B SOT-23onlyThird Field:RJC R2C A–E =Initial Reverse Breakdown Voltage or Reference Voltage Tolerance RKC R4C A =±0.1%,B =±0.2%,C =+0.5%,D =±1.0%,E =±2.0%R5C R8C SOT-23only R0C SOT-23onlyRJD R2D RKD R4D R5D R8D SOT-23only R0D SOT-23onlyRJE R2E RKEL M 4040 4Absolute Maximum Ratings(Note1)If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Reverse Current20mA Forward Current10mA Power Dissipation(T A=25˚C)(Note2)M3Package306mW Z Package550mW M7Package241mW Storage Temperature−65˚C to+150˚C Lead TemperatureM3PackageVapor phase(60seconds)+215˚C Infrared(15seconds)+220˚C Z PackageSoldering(10seconds)+260˚C ESD SusceptibilityHuman Body Model(Note3)2kVMachine Model(Note3)200V See AN-450“Surface Mounting Methods and Their Effect on Product Reliability”for other methods of soldering surface mount devices.Operating Ratings(Notes1,2) Temperature Range(T min≤T A≤T max) Industrial Temperature Range−40˚C≤T A≤+85˚C Extended Temperature Range−40˚C≤T A≤+125˚C Reverse CurrentLM4040-2.060µA to15mA LM4040-2.560µA to15mA LM4040-3.062µA to15mA LM4040-4.168µA to15mA LM4040-5.074µA to15mA LM4040-8.291µA to15mA LM4040-10.0100µA to15mALM4040-2.0Electrical Characteristics(Industrial Temperature Range)Boldface limits apply for T A=T J=T MIN to T MAX;all other limits T A=T J=25˚C.The grades A and B designate initial Re-verse Breakdown Voltage tolerances of±0.1%and±0.2%,respectively.Symbol Parameter Conditions Typical(Note4)LM4040AIM3LM4040AIZ(Limit)(Note5)LM4040BIM3LM4040BIZLM4040BIM7(Limit)(Note5)Units(Limit)V R Reverse Breakdown Voltage I R=100µA 2.048VReverse Breakdown Voltage Tolerance(Note6)I R=100µA±2.0±4.1mV(max)±15±17mV(max)I RMIN Minimum Operating Current45µA6060µA(max)6565µA(max)∆V R/∆T Average Reverse BreakdownVoltage TemperatureCoefficient(Note6)I R=10mA±20ppm/˚CI R=1mA±15±100±100ppm/˚C(max) I R=100µA±15ppm/˚C∆V R/∆I R Reverse Breakdown VoltageChange with OperatingCurrent Change(Note*NOTARGET FOR*)I RMIN≤I R≤1mA0.3mV0.80.8mV(max)1.0 1.0mV(max) 1mA≤I R≤15mA2.5mV6.0 6.0mV(max)8.08.0mV(max)Z R Reverse DynamicImpedance I R=1mA,f=120Hz,I AC=0.1I R0.3Ω0.80.8Ω(max)e N Wideband Noise I R=100µA35µV rms10Hz≤f≤10kHzLM40405LM4040-2.0Electrical Characteristics (Industrial Temperature Range)(Continued)Boldface limits apply for T A =T J =T MIN to T MAX ;all other limits T A =T J =25˚C.The grades A and B designate initial Re-verse Breakdown Voltage tolerances of ±0.1%and ±0.2%,respectively.Symbol Parameter ConditionsTypical (Note 4)LM4040AIM3LM4040AIZ (Limit)(Note 5)LM4040BIM3LM4040BIZ LM4040BIM7(Limit)(Note 5)Units (Limit)∆V RReverse Breakdown Voltage Long Term Stability t =1000hrs T =25˚C ±0.1˚CI R =100µA 120ppmV HYSTThermal Hysteresis (Note 8)∆T =−40˚C to +125˚C0.08%LM4040-2.0Electrical Characteristics (Industrial Temperature Range)Boldface limits apply for T A =T J =T MIN to T MAX ;all other limits T A =T J =25˚C.The grades C,D and E designate initial Reverse Breakdown Voltage tolerances of ±0.5%,±1.0%and ±2.0%,respectively.SymbolParameterConditionsTypical (Note 4)LM4040CIM3LM4040CIZ LM4040CIM7(Limit)(Note 5)LM4040DIM3LM4040DIZ LM4040DIM7(Limit)(Note 5)LM4040EIM7LM4040EIZ (Limit)(Note 5)Units(Limit)V RReverse Breakdown VoltageI R =100µA 2.048VReverse Breakdown Voltage Tolerance (Note 6)I R =100µA ±10±20±41mV (max)±23±40±60mV (max)I RMINMinimum Operating Current45µA 606565µA (max)657070µA (max)∆V R /∆TAverage Reverse Breakdown Voltage Temperature Coefficient (Note 6)I R =10mA ±20ppm/˚CI R =1mA ±15±100±150±150ppm/˚C (max)I R =100µA±15ppm/˚C ∆V R /∆I RReverse Breakdown Voltage Change with Operating Current Change (Note *NO TARGET FOR *)I RMIN ≤I R ≤1mA 0.3mV 0.8 1.0 1.0mV (max)1.01.21.2mV (max)1mA ≤I R ≤15mA 2.5mV 6.08.08.0mV (max)8.010.010.0mV (max)Z R Reverse Dynamic Impedance I R =1mA,f =120Hz 0.3ΩI AC =0.1I R 0.91.11.1Ω(max)e N Wideband NoiseI R =100µA 35µV rms10Hz ≤f ≤10kHz∆V RReverse Breakdown Voltage Long Term Stability t =1000hrsT =25˚C ±0.1˚C 120ppmI R =100µA V HYSTThermal Hysteresis (Note 8)∆T =−40˚C to +125˚C0.08%L M 4040 6LM4040-2.0Electrical Characteristics(Extended Temperature Range)Boldface limits apply for T A=T J=T MIN to T MAX;all other limits T A=T J=25˚C.The grades C,D and E designate initial Reverse Breakdown Voltage tolerances of±0.5%,±1.0%and±2.0%,respectively.Symbol Parameter Conditions Typical(Note4)LM4040CEM3(Limit)(Note5)LM4040DEM3(Limit)(Note5)LM4040EEM3(Limit)(Note5)Units(Limit)V R Reverse BreakdownVoltageI R=100µA 2.048VReverse Breakdown Voltage Tolerance (Note6)I R=100µA±10±20±41mV(max)±30±50±70mV(max)I RMIN Minimum OperatingCurrent 45µA606565µA(max)687373µA(max)∆V R/∆T Average ReverseBreakdown VoltageTemperatureCoefficient(Note6)I R=10mA±20ppm/˚CI R=1mA±15±100±150±150ppm/˚C(max) I R=100µA±15ppm/˚C∆V R/∆I R Reverse BreakdownVoltage Change withOperating CurrentChange(Note7)I RMIN≤I R≤1mA0.3mV0.8 1.0 1.0mV(max)1.0 1.2 1.2mV(max) 1mA≤I R≤15mA2.5mV6.08.08.0mV(max)8.010.010.0mV(max)Z R Reverse DynamicImpedance I R=1mA,f=120Hz,I AC=0.1I R0.3Ω0.9 1.1 1.1Ω(max)e N Wideband Noise I R=100µA35µV rms10Hz≤f≤10kHz∆V R Reverse BreakdownVoltage Long TermStability t=1000hrsT=25˚C±0.1˚CI R=100µA120ppmV HYST Thermal Hysteresis(Note8)∆T=−40˚C to+125˚C0.08%LM4040-2.5Electrical Characteristics(Industrial Temperature Range)Boldface limits apply for T A=T J=T MIN to T MAX;all other limits T A=T J=25˚C.The grades A and B designate initial Re-verse Breakdown Voltage tolerances of±0.1%and±0.2%,respectively.Symbol Parameter Conditions Typical(Note4)LM4040AIM3LM4040AIZ(Limit)(Note5)LM4040BIM3LM4040BIZLM4040BIM7Limits(Note5)Units(Limit)V R Reverse Breakdown Voltage I R=100µA 2.500VReverse Breakdown Voltage Tolerance(Note6)I R=100µA±2.5±5.0mV(max)±19±21mV(max)I RMIN Minimum Operating Current45µA6060µA(max)6565µA(max)LM40407LM4040-2.5Electrical Characteristics (Industrial Temperature Range)(Continued)Boldface limits apply for T A =T J =T MIN to T MAX ;all other limits T A =T J =25˚C.The grades A and B designate initial Re-verse Breakdown Voltage tolerances of ±0.1%and ±0.2%,respectively.Symbol Parameter ConditionsTypical (Note 4)LM4040AIM3LM4040AIZ (Limit)(Note 5)LM4040BIM3LM4040BIZ LM4040BIM7Limits (Note 5)Units (Limit)∆V R /∆TAverage Reverse Breakdown Voltage Temperature Coefficient (Note 6)I R =10mA ±20ppm/˚CI R =1mA ±15±100±100ppm/˚C (max)I R =100µA±15ppm/˚C ∆V R /∆I R Reverse Breakdown Voltage Change with Operating Current Change (Note 7)I RMIN ≤I R ≤1mA0.3mV0.80.8mV (max)1.01.0mV (max)1mA ≤I R ≤15mA2.5mV 6.0 6.0mV (max)8.08.0mV (max)Z R Reverse Dynamic Impedance I R =1mA,f =120Hz,I AC =0.1I R 0.3Ω0.80.8Ω(max)e N Wideband NoiseI R =100µA 35µV rms10Hz ≤f ≤10kHz∆V RReverse Breakdown Voltage Long Term Stability t =1000hrs T =25˚C ±0.1˚CI R =100µA 120ppmV HYSTThermal Hysteresis (Note 8)∆T =−40˚C to +125˚C0.08%LM4040-2.5Electrical Characteristics (Industrial Temperature Range)Boldface limits apply for T A =T J =T MIN to T MAX ;all other limits T A =T J =25˚C.The grades C,D and E designate initial Reverse Breakdown Voltage tolerances of ±0.5%,±1.0%and ±2.0%,respectively.SymbolParameterConditionsTypical (Note 4)LM4040CIM3LM4040DIZ LM4040CIM7Limits (Note 5)LM4040DIM3LM4040DIZ LM4040DIM7Limits (Note 5)LM4040EIM7LM4040EIZ Limits(Note 5)Units(Limit)V RReverse Breakdown VoltageI R =100µA 2.500VReverse Breakdown Voltage Tolerance (Note 6)I R =100µA ±12±25±50mV (max)±29±49±74mV (max)I RMINMinimum Operating Current45µA 606565µA (max)657070µA (max)∆V R /∆TAverage Reverse Breakdown Voltage TemperatureCoefficient(Note 6)I R =10mA ±20ppm/˚C I R =1mA ±15±100±150±150ppm/˚C (max)I R =100µA±15ppm/˚CL M 4040 8LM4040-2.5Electrical Characteristics(Industrial Temperature Range)(Continued)Boldface limits apply for T A=T J=T MIN to T MAX;all other limits T A=T J=25˚C.The grades C,D and E designate initial Reverse Breakdown Voltage tolerances of±0.5%,±1.0%and±2.0%,respectively.Symbol Parameter Conditions Typical(Note4)LM4040CIM3LM4040DIZLM4040CIM7Limits(Note5)LM4040DIM3LM4040DIZLM4040DIM7Limits(Note5)LM4040EIM7LM4040EIZLimits(Note5)Units(Limit)∆V R/∆I R Reverse BreakdownVoltage Change withOperating CurrentChange(Note7)I RMIN≤I R≤1mA0.3mV0.8 1.0 1.0mV(max)1.0 1.2 1.2mV(max) 1mA≤I R≤15mA2.5mV6.08.08.0mV(max)8.010.010.0mV(max)Z R Reverse DynamicImpedance I R=1mA,f=120Hz0.3ΩI AC=0.1I R0.9 1.1 1.1Ω(max)e N Wideband Noise I R=100µA35µV rms10Hz≤f≤10kHz∆V R Reverse BreakdownVoltage Long TermStability t=1000hrsT=25˚C±0.1˚C120ppm I R=100µAV HYST Thermal Hysteresis(Note8)∆T=−40˚C to+125˚C0.08%LM4040-2.5Electrical Characteristics(Extended Temperature Range)Boldface limits apply for T A=T J=T MIN to T MAX;all other limits T A=T J=25˚C.The grades C,D and E designate initial Reverse Breakdown Voltage tolerances of±0.5%,±1.0%and±2.0%,respectively.Symbol Parameter Conditions Typical(Note4)LM4040CEM3Limits(Note5)LM4040DEM3Limits(Note5)LM4040EEM3Limits(Note5)Units(Limit)V R Reverse BreakdownVoltageI R=100µA 2.500VReverse Breakdown VoltageTolerance(Note6)I R=100µA±12±25±50mV(max)±38±63±88mV(max)I RMIN Minimum OperatingCurrent 45µA606565µA(max)687373µA(max)∆V R/∆T Average ReverseBreakdown VoltageTemperatureCoefficient(Note6)I R=10mA±20ppm/˚CI R=1mA±15±100±150±150ppm/˚C(max) I R=100µA±15ppm/˚C∆V R/∆I R Reverse BreakdownVoltage Change withOperating CurrentChange(Note7)I RMIN≤I R≤1mA0.3mV0.8 1.0 1.0mV(max)1.0 1.2 1.2mV(max)1mA≤I R≤15mA 2.5mV6.08.08.0mV(max)8.010.010.0mV(max)LM40409LM4040-2.5Electrical Characteristics (Extended Temperature Range)(Continued)Boldface limits apply for T A =T J =T MIN to T MAX ;all other limits T A =T J =25˚C.The grades C,D and E designate initial Reverse Breakdown Voltage tolerances of ±0.5%,±1.0%and ±2.0%,respectively.SymbolParameterConditionsTypical (Note 4)LM4040CEM3Limits (Note 5)LM4040DEM3Limits (Note 5)LM4040EEM3Limits (Note 5)Units(Limit)Z R Reverse Dynamic Impedance I R =1mA,f =120Hz,I AC =0.1I R 0.3Ω0.91.11.1Ω(max)e N Wideband NoiseI R =100µA 35µV rms10Hz ≤f ≤10kHz∆V RReverse Breakdown Voltage Long Term Stabilityt =1000hrsT =25˚C ±0.1˚CI R =100µA 120ppmV HYSTThermal Hysteresis(Note 8)∆T =−40˚C to +125˚C0.08%LM4040-3.0Electrical Characteristics (Industrial Temperature Range)Boldface limits apply for T A =T J =T MIN to T MAX ;all other limits T A =T J =25˚C.The grades A and B designate initial Re-verse Breakdown Voltage tolerances of ±0.1%and ±0.2%,respectively.Symbol Parameter ConditionsTypical (Note 4)LM4040AIM3LM4040AIZ (Limit)(Note 5)LM4040BIM3LM4040BIZ LM4040BIM7Limits (Note 5)Units (Limit)V R Reverse Breakdown Voltage I R =100µA 3.000VReverse Breakdown Voltage Tolerance (Note 6)I R =100µA ±3.0±6.0mV (max)±22±26mV (max)I RMINMinimum Operating Current47µA 6262µA (max)6767µA (max)∆V R /∆TAverage Reverse Breakdown Voltage Temperature Coefficient (Note 6)I R =10mA ±20ppm/˚C I R =1mA ±15±100±100ppm/˚C (max)I R =100µA±15ppm/˚C ∆V R /∆I R Reverse Breakdown Voltage Change with Operating Current Change (Note 7)I RMIN ≤I R ≤1mA0.6mV0.80.8mV (max)1.11.1mV (max)1mA ≤I R ≤15mA2.7mV 6.0 6.0mV (max)9.09.0mV (max)Z R Reverse Dynamic Impedance I R =1mA,f =120Hz,I AC =0.1I R 0.4Ω0.90.9Ω(max)e N Wideband NoiseI R =100µA 35µV rms10Hz ≤f ≤10kHz∆V RReverse Breakdown Voltage Long Term Stability t =1000hrs T =25˚C ±0.1˚CI R =100µA 120ppmV HYSTThermal Hysteresis (Note 8)∆T =−40˚C to +125˚C0.08%L M 4040 10LM4040-3.0Electrical Characteristics(Industrial Temperature Range)Boldface limits apply for T A=T J=T MIN to T MAX;all other limits T A=T J=25˚C.The grades C,D and E designate initial Reverse Breakdown Voltage tolerances of±0.5%,±1.0%and±2.0%,respectively.Symbol Parameter Conditions Typical(Note4)LM4040CIM3LM4040DIZLM4040CIM7Limits(Note5)LM4040DIM3LM4040DIZLM4040DIM7Limits(Note5)LM4040EIM7LM4040EIZLimits(Note5)Units(Limit)V R Reverse BreakdownVoltageI R=100µA 3.000VReverse Breakdown Voltage Tolerance (Note6)I R=100µA±15±30±60mV(max)±34±59±89mV(max)I RMIN Minimum OperatingCurrent 45µA606565µA(max)657070µA(max)∆V R/∆T Average ReverseBreakdown VoltageTemperatureCoefficient(Note6)I R=10mA±20ppm/˚CI R=1mA±15±100±150±150ppm/˚C(max) I R=100µA±15ppm/˚C∆V R/∆I R Reverse BreakdownVoltage Change withOperating CurrentChange(Note7)I RMIN≤I R≤1mA0.4mV0.8 1.1 1.1mV(max)1.1 1.3 1.3mV(max) 1mA≤I R≤15mA2.7mV6.08.08.0mV(max)9.011.011.0mV(max)Z R Reverse DynamicImpedance I R=1mA,f=120Hz0.4ΩI AC=0.1I R0.9 1.2 1.2Ω(max)e N Wideband Noise I R=100µA35µV rms10Hz≤f≤10kHz∆V R Reverse BreakdownVoltage Long TermStability t=1000hrsT=25˚C±0.1˚C120ppm I R=100µAV HYST Thermal Hysteresis(Note8)∆T=−40˚C to+125˚C0.08%LM4040-3.0Electrical Characteristics(Extended Temperature Range)Boldface limits apply for T A=T J=T MIN to T MAX;all other limits T A=T J=25˚C.The grades C,D and E designate initial Reverse Breakdown Voltage tolerances of±0.5%,±1.0%and±2.0%,respectively.Symbol Parameter Conditions Typical(Note4)LM4040CEM3Limits(Note5)LM4040DEM3Limits(Note5)LM4040EEM3Limits(Note5)Units(Limit)V R Reverse BreakdownVoltageI R=100µA 3.000VReverse Breakdown VoltageTolerance(Note6)I R=100µA±15±30±60mV(max)±45±75±105mV(max)I RMIN Minimum OperatingCurrent 47µA626767µA(max)707575µA(max)LM4040LM4040-3.0Electrical Characteristics (Extended Temperature Range)(Continued)Boldface limits apply for T A =T J =T MIN to T MAX ;all other limits T A =T J =25˚C.The grades C,D and E designate initial Reverse Breakdown Voltage tolerances of ±0.5%,±1.0%and ±2.0%,respectively.SymbolParameterConditionsTypical (Note 4)LM4040CEM3Limits (Note 5)LM4040DEM3Limits (Note 5)LM4040EEM3Limits (Note 5)Units(Limit)∆V R /∆TAverage Reverse Breakdown Voltage TemperatureCoefficient (Note 6)I R =10mA ±20ppm/˚CI R =1mA ±15±100±150±150ppm/˚C (max)I R =100µA±15ppm/˚C ∆V R /∆I R Reverse Breakdown Voltage Change with Operating Current Change (Note 7)I RMIN ≤I R ≤1mA0.4mV 0.8 1.1 1.1mV (max)1.11.31.3mV (max)1mA ≤I R ≤15mA2.7mV 6.08.08.0mV (max)9.011.011.0mV (max)Z R Reverse Dynamic Impedance I R =1mA,f =120Hz,I AC =0.1I R 0.4Ω0.91.21.2Ω(max)e N Wideband NoiseI R =100µA 35µV rms10Hz ≤f ≤10kHz∆V RReverse Breakdown Voltage Long Term Stabilityt =1000hrsT =25˚C ±0.1˚CI R =100µA 120ppmV HYSTThermal Hysteresis(Note 8)∆T =−40˚C to +125˚C0.08%LM4040-4.1Electrical Characteristics (Industrial Temperature Range)Boldface limits apply for T A =T J =T MIN to T MAX ;all other limits T A =T J =25˚C.The grades A and B designate initial Re-verse Breakdown Voltage tolerances of ±0.1%and ±0.2%,respectively.SymbolParameterConditionsTypical (Note 4)LM4040AIM3LM4040AIZ Limits (Note 5)LM4040BIM3LM4040BIZ LM4040BIM7Limits (Note 5)Units (Limit)V R Reverse Breakdown Voltage I R =100µA 4.096VReverse Breakdown Voltage Tolerance (Note 6)I R =100µA ±4.1±8.2mV (max)±31±35mV (max)I RMINMinimum Operating Current50µA 6868µA (max)7373µA (max)∆V R /∆TAverage Reverse Breakdown Voltage Temperature Coefficient(Note 6)I R =10mA ±30ppm/˚C I R =1mA ±20±100±100ppm/˚C (max)I R =100µA±20ppm/˚C ∆V R /∆I R Reverse Breakdown Voltage Change with Operating Current Change (Note 7)I RMIN ≤I R ≤1mA0.5mV0.90.9mV (max)1.21.2mV (max)1mA ≤I R ≤15mA3.0mV 7.07.0mV (max)10.010.0mV (max)L M 4040LM4040-4.1Electrical Characteristics(Industrial Temperature Range)(Continued)Boldface limits apply for T A=T J=T MIN to T MAX;all other limits T A=T J=25˚C.The grades A and B designate initial Re-verse Breakdown Voltage tolerances of±0.1%and±0.2%,respectively.Symbol Parameter Conditions Typical(Note4)LM4040AIM3LM4040AIZLimits(Note5)LM4040BIM3LM4040BIZLM4040BIM7Limits(Note5)Units(Limit)Z R Reverse DynamicImpedance I R=1mA,f=120Hz,0.5ΩI AC=0.1I R 1.0 1.0Ω(max)e N Wideband Noise I R=100µA80µV rms10Hz≤f≤10kHz∆V R Reverse Breakdown VoltageLong Term Stability t=1000hrsT=25˚C±0.1˚CI R=100µA120ppmV HYST Thermal Hysteresis(Note8)∆T=−40˚C to+125˚C0.08%LM4040LM4040-4.1Electrical Characteristics (Industrial Temperature Range)Boldface limits apply for T A =T J =T MIN to T MAX ;all other limits T A =T J =25˚C.The grades C and D designate initial Re-verse Breakdown Voltage tolerances of ±0.5%and ±1.0%,respectively.SymbolParameterConditionsTypical (Note 4)LM4040CIM3LM4040CIZ LM4040CIM7Limits (Note 5)LM4040DIM3LM4040BIZ LM4040DIM7Limits (Note 5)Units (Limit)V R Reverse Breakdown Voltage I R =100µA 4.096VReverse Breakdown Voltage Tolerance (Note 6)I R =100µA ±20±41mV (max)±47±81mV (max)I RMINMinimum Operating Current50µA 6873µA (max)7378µA (max)∆V R /∆T Average Reverse Breakdown Voltage Temperature Coefficient (Note 6)I R =10mA±30ppm/˚C I R =1mA ±20±100±150ppm/˚C (max)I R =100µA ±20ppm/˚C ∆V R /∆I R Reverse Breakdown Voltage Change with Operating Current Change (Note 7)I RMIN ≤I R ≤1mA 0.5mV0.9 1.2mV (max)1.21.5mV (max)1mA ≤I R ≤15mA3.0mV 7.09.0mV (max)10.013.0mV (max)Z R Reverse Dynamic Impedance I R =1mA,f =120Hz,0.5ΩI AC =0.1I R 1.01.3Ω(max)e N Wideband NoiseI R =100µA 80µV rms 10Hz ≤f ≤10kHz∆V RReverse Breakdown Voltage Long Term Stability t =1000hrs T =25˚C ±0.1˚CI R =100µA 120ppmV HYSTThermal Hysteresis (Note 8)∆T =−40˚C to +125˚C0.08%L M 4040LM4040-5.0Electrical Characteristics(Industrial Temperature Range)Boldface limits apply for T A=T J=T MIN to T MAX;all other limits T A=T J=25˚C.The grades A and B designate initial Re-verse Breakdown Voltage tolerances of±0.1%and±0.2%,respectively.Symbol Parameter Conditions Typical(Note4)LM4040AIM3LM4040AIZLimits(Note5)LM4040BIM3LM4040BIZLM4040BIM7Limits(Note5)Units(Limit)V R Reverse Breakdown Voltage I R=100µA 5.000VReverse Breakdown Voltage Tolerance(Note6)I R=100µA±5.0±10mV(max)±38±43mV(max)I RMIN Minimum Operating Current54µA7474µA(max)8080µA(max)∆V R/∆T Average Reverse Breakdown Voltage TemperatureCoefficient(Note6)I R=10mA±30ppm/˚CI R=1mA±20±100±100ppm/˚C(max) I R=100µA±20ppm/˚C∆V R/∆I R Reverse Breakdown VoltageChange with OperatingCurrent Change(Note7)I RMIN≤I R≤1mA0.5mV1.0 1.0mV(max)1.4 1.4mV(max) 1mA≤I R≤15mA 3.5mV8.08.0mV(max)12.012.0mV(max)Z R Reverse DynamicImpedance I R=1mA,f=120Hz,0.5ΩI AC=0.1I R 1.1 1.1Ω(max)e N Wideband Noise I R=100µA80µV rms10Hz≤f≤10kHz∆V R Reverse Breakdown VoltageLong Term Stability t=1000hrsT=25˚C±0.1˚C120ppm I R=100µAV HYST Thermal Hysteresis(Note8)∆T=−40˚C to+125˚C0.08%LM4040。

Rating Collector – Emitter Voltage Collector – Emitter Voltage Collector – Base Voltage Emitter – Base Voltage Collector Current — Continuous Total Device Dissipation @ TA = 25°C Derate above 25°C Total Device Dissipation @ TC = 25°C Derate above 25°C Operating and Storage Junction Temperature Range Symbol VCEO VCES VCBO VEBO IC PD PD TJ, Tstg Value –40 –40 –40 –5.0 — 625 5.0 1.5 12 – 55 to +150 Unit Vdc Vdc Vdc Vdc mAdc mW mW/°C mW mW/°C °C CASE 29–04, STYLE 1 TO–92 (TO–226AA)
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Motorola Small–Signal Transistors, FETs and Diodes Device Data
元器件交易网
PACKAGE DIMEN
SEATING PLANE
B
F
L K D
NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 3. CONTOUR OF PACKAGE BEYOND DIMENSION R IS UNCONTROLLED. 4. DIMENSION F APPLIES BETWEEN P AND L. DIMENSION D AND J APPLY BETWEEN L AND K MINIMUM. LEAD DIMENSION IS UNCONTROLLED IN P AND BEYOND DIMENSION K MINIMUM. INCHES MIN MAX 0.175 0.205 0.170 0.210 0.125 0.165 0.016 0.022 0.016 0.019 0.045 0.055 0.095 0.105 0.015 0.020 0.500 ––– 0.250 ––– 0.080 0.105 ––– 0.100 0.115 ––– 0.135 ––– MILLIMETERS MIN MAX 4.45 5.20 4.32 5.33 3.18 4.19 0.41 0.55 0.41 0.48 1.15 1.39 2.42 2.66 0.39 0.50 12.70 ––– 6.35 ––– 2.04 2.66 ––– 2.54 2.93 ––– 3.43 –––

元器件选择
1. 输入电容选择 输入电容在功率管导通的时候提供脉冲电流，功率管截止的时候电源对电容充电，由此来保
持输入电压的稳定性。在开关频率处，输入电容阻抗要比输入源阻抗小，以避免高频开关电流从 输入源流入。输入电容建议使用大于 10μF 的电容，这样可以更好的减小从输入源抽出的峰值电流 并且减小输入开关噪声。布板时输入电容尽可能离输入脚近一些。
5. PCB 布版注意事项 合理的 PCB 布局 对于最大程度保证系统稳定性以及低噪声来说很重要。使用多层 PCB 板是
避免噪声干扰的一种很有效的办法。SW 端处在快速开关的节点，所以 PCB 走线应当尽可能的 短，另外芯片的 GND 端应保持尽量良好的接地。
布板时需要注意，电感应当距离 SW 管脚尽可能的近一些，否则会影响整个系统的效率。另 外一个需要注意的事项是尽量减小 RS 两端走线引起的寄生电阻，以保证采样电流的准确。
2. 输出电容选择 在 LED 两端并联一个电容可以减小输出电压纹波，从而减小 LED 的纹波电流，同时保证环路
稳定性。当然这个电容并不会影响工作频率和效率，但是通过减小 LED 上电压上升的速率，会增 加启动时间。输出电容越大，LED 上的电流纹波越小。在开关频率处，输出电容阻抗应该是个低 值。SD42560 应用中建议使用 2.2μF 或者更大的电容。
制在 2.5A 左右。
4. 抖频功能 SD42560 内置抖频功能，可以改善系统的 EMI 特性。内部振荡频率在一个很小的范围内进行
抖动，减小在单一频率的对外辐射，从而使得 EMI 设计简单化。
5. 输出过压保护 在升压或升降压模式下，如果LED开路，采样电阻RS上的压降为零，芯片会正常操作，并且
峰值电流接近限流值。此时如果不采取保护措施，SENSE+端电压会不断升高， 导致内部功率管 或外部元器件击穿损坏。芯片内部OVP模块监测SENSE+端电压，当其电压超过 40V，功率管关 断，芯片停止操作，保证了芯片的安全。

连接到吸入端，防止外部空气进入。确保排出端无液体泄漏。
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6. 小心检查装置电压与计量泵铭牌上指示的电压是否一致。每台泵配有三个叉塞。务必确保计 量泵接地。断开连接时，不要拔电线，而是用手指夹住塞子，然后拔出。不要使用与重型电 气设备共用的插座，重型电气设备会产生冲击电压。冲击电压会使泵内的电子电路产生故障。
** 遵守化学药品制造商提供的说明和警告信息。用户有责任确定化学药品与化学计量泵的兼容
性。
** 确认计量泵铭牌上的电压与装置电压一致。如果泵不能启动，检查管线电压。
** 处理饮用水时应向当地的卫生官员和/或合格水水质处理专家咨询。
** 安装或断开计量泵管道前一定要使系统减压。
** 如果注入点低于化学药品储槽和泵，则应安装反虹吸阀。
3
结构材料 结构可用的湿材料（接触泵送溶液的部件）是玻纤填充的聚丙烯、PVC（聚氯乙烯）、SAN、海 帕伦、氟橡胶、特氟纶、316 不锈钢、PVDF（聚偏氟乙稀）、陶瓷和碳合金。这些材料对大多数 化学药品有较强的耐腐蚀性。但是，有些化学药品，如强酸或有机溶剂，会使某些合成橡胶和塑 料部件，如隔板、阀座或阀头等老化。有关化学兼容性信息请咨询“耐化学性指南”或供应商。
制造商声明对下列行为免责：任何不正确安装、维护、使用或者试图使用超出其功能范围的操作， 或者任何未经授权的维修。可更换的合成橡胶部件为消耗性部件，不属于无论是明示或暗示的质 量担保范围。制造商对因使用其产品而导致的间接或其他损坏、伤害或费用不承担责任。
不论明示还是暗示，以上承保替代任何其它承保。制造商不对适合性和适销性做出保证。本公司 代理无权提供上述承诺范围之外的服务。
－ 计量泵 － 清洁的挠性吸管* － 白色的硬排出管* － 底阀/过滤器组件* － 背压喷射阀组件 － 您正在阅读的说明书一本 － 出料阀组件*（大多数型号） * 标准泵包括这些部件。有无相关部件