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LM120/LM320 Series 3-Terminal Negative Regulators datasheet (Rev. C)

Document overview

Manufacturer or author: Texas Instruments, Incorporated [SNVS756,C]
PDF pages: 23

Technical content

LM120,LM320-N www.ti.com SNVS756C –APRIL 1998–REVISED APRIL 2013 LM120/LM320-NSeries3-TerminalNegativeRegulators Check forSamples: LM120 ,LM320-N Exceptionalefforthas been made tomake theLM1201FEATURES Seriesimmune tooverloadconditions.The regulators 2• PresetOutput VoltageErrorLess than ±3% have current limitingwhich is independent of

PresetCurrentLimit temperature, combined with thermal overload protection.Internalcurrentlimitingprotectsagainst• InternalThermal Shutdown momentary faultswhilethermalshutdown prevents• Operates withInput-OutputVoltageDifferential junctiontemperaturesfrom exceeding safe limitsdown to1V duringprolongedoverloads.
ExcellentRippleRejection Althoughprimarilyintendedforfixedoutputvoltage• Low Temperature Drift applications,theLM120 Seriesmay be programmed
EasilyAdjustabletoHigherOutput Voltage for higheroutputvoltageswith a simple resistive divider.The low quiescentdrain currentof the devicesallowsthistechniqueto be used withgoodDESCRIPTION regulation.The LM120 series are three-terminalnegative regulatorswitha fixedoutputvoltageof −5V, −12V, Table1.LM120 SeriesPackages and Powerand −15V, and up to 1.5A load currentcapability. CapabilityWhere othervoltagesare required,the LM137 and Device Package Rated Power DesignLM137HV seriesprovidean outputvoltagerange of Dissipation Load−1.2Vto−47V. Current The LM120 need only one externalcomponent— a LM120/LM320- TO-3 (NDS) 20W 1.5A compensationcapacitorat the output,making them N easy to apply.Worst case specificationson output TO (NDT) 2W 0.5A voltagedeviationdue toany combinationofline,load LM320-N TO-220 (NDE) 15W 1.5Aor temperaturevariationassure satisfactorysystem operation. TypicalApplications *Requiredifregulatorisseparatedfrom filtercapacitorby more than3 inches.For valuegiven,capacitormust be solid tantalum.25 μF aluminum electrolyticmay be substituted. †Requiredforstability.Forvaluegiven, capacitormust be solidtantalum.25 μF aluminum electrolyticmay be substituted. Valuesgivenmay be increasedwithout limit. Foroutputcapacitanceinexcessof100 μF,a highcurrentdiodefrominputto output(1N4001,etc.)willprotectthe regulatorfrommomentary inputshorts.Figure1. Dual Trimmed Supply Figure2. FixedRegulator Pleasebe aware thatan importantnoticeconcerningavailability,standardwarranty,and use incriticalapplicationsof Texas Instrumentssemiconductorproductsand disclaimerstheretoappearsattheend ofthisdatasheet. 2Alltrademarksarethepropertyoftheirrespectiveowners. PRODUCTION DATA informationiscurrentas ofpublicationdate. Copyright© 1998–2013,Texas InstrumentsIncorporatedProductsconform to specificationsper the terms of the Texas Instrumentsstandardwarranty.Productionprocessingdoes not necessarilyincludetestingofallparameters.

LM120,LM320-N SNVS756C –APRIL 1998–REVISED APRIL 2013 www.ti.com These deviceshave limitedbuilt-inESD protection.The leadsshouldbe shortedtogetherorthedeviceplacedinconductivefoam duringstorageorhandlingtopreventelectrostaticdamage totheMOS gates. ABSOLUTE MAXIMUM RATINGS −5 VOLT REGULATORS (1)(2)(3) Power Dissipation InternallyLimited InputVoltage −25V Input-OutputVoltageDifferential 25V JunctionTemperatures (4) StorageTemperatureRange −65°C to+150°C Lead Temperature (Soldering,10 sec.) 300°C Plastic 260°C (1) RefertoRETS120-5H drawingforLM120H-5.0 orRETS120-5K drawingforLM120-5K militaryspecifications. (2) For−5V 3 amp regulators,see LM145 datasheet. (3) IfMilitary/Aerospacespecifieddevicesarerequired,pleasecontacttheTexas InstrumentsSalesOffice/Distributorsforavailabilityand specifications. (4) Thisspecificationappliesover−55°C ≤ TJ ≤ +150°C fortheLM120 and 0°C ≤ TJ ≤ +125°C fortheLM320-N. LM120K-5.0 AND LM320K-5.0 ELECTRICAL CHARACTERISTICS (1) MetalCan Package Order Numbers LM120K-5.0 LM320K-5.0 (TO-3) (TO-3) Units Design Output Current(ID ) 1.5A Device Dissipation(PD ) 20W Parameter Conditions(2) Min Typ Max Min Typ Max OutputVoltage TJ = 25°C, VIN =10V, −5.1 −5 −4.9 −5.2 −5 −4.8 V ILOAD = 5 mA LineRegulation TJ = 25°C, ILOAD = 5 mA, 10 25 10 40 mV VMIN ≤ VIN ≤ VMAX InputVoltage −25 −7 −25 −7 V RippleRejection f= 120 Hz 54 64 54 64 dB Load Regulation, TJ = 25°C, VIN = 10V, 50 75 60 100 mV (3) 5 mA ≤ ILOAD ≤ ID (2) 5 mA ≤ ILOAD ≤ ID ,P ≤ PD QuiescentCurrent VMIN ≤ VIN ≤ VMAX 1 2 1 2 mA QuiescentCurrent TJ = 25°C Change VMIN ≤ VIN ≤ VMAX 0.1 0.4 0.1 0.4 mA 5 mA ≤ ILOAD ≤ ID 0.1 0.4 0.1 0.4 mA OutputNoiseVoltage TA = 25°C, C L = 1 μF,IL = 5 mA, 150 150 μV VIN = 10V,10 Hz ≤ f≤ 100 kHz Long Term Stability 5 50 5 50 mV ThermalResistance JunctiontoCase 3 3 °C/W JunctiontoAmbient 35 35 °C/W (1) For−5V 3 amp regulators,see LM145 datasheet. (2) Thisspecificationappliesover−55°C ≤ TJ ≤ +150°C fortheLM120 and 0°C ≤ TJ ≤ +125°C fortheLM320-N. (3) Regulationismeasured atconstantjunctiontemperature.Changes inoutputvoltagedue toheatingeffectsmust be takenintoaccount separately.To ensureconstantjunctiontemperature,lowdutycycle,pulsetestingisused.The LM120/LM320-N seriesdoes have low thermalfeedback,improvinglineand loadregulation.On allothertests,even thoughpower dissipationisinternallylimited,electrical specificationsapplyonlyup toPD .

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LM120,LM320-N www.ti.com SNVS756C –APRIL 1998–REVISED APRIL 2013 LM120H-5.0 ELECTRICAL CHARACTERISTICS (1) MetalCan Package Order Numbers LM120H-5.0 (TO) Units Design Output Current(ID ) 0.5A Device Dissipation(PD ) 2W Parameter Conditions(2) Min Typ Max OutputVoltage TJ = 25°C, VIN =10V, −5.1 −5 −4.9 V ILOAD = 5 mA LineRegulation TJ = 25°C, ILOAD = 5 mA, 10 25 mV VMIN ≤ VIN ≤ VMAX InputVoltage −25 −7 V RippleRejection f= 120 Hz 54 64 dB Load Regulation, TJ = 25°C, VIN = 10V, 30 50 mV (3) 5 mA ≤ ILOAD ≤ ID OutputVoltage, −7.5V≤ VIN ≤ VMAX , −5.20 −4.80 V (4) 5 mA ≤ ILOAD ≤ ID ,P ≤ PD QuiescentCurrent VMIN ≤ VIN ≤ VMAX 1 2 mA QuiescentCurrent TJ = 25°C Change VMIN ≤ VIN ≤ VMAX 0.05 0.4 mA 5 mA ≤ ILOAD ≤ ID 0.04 0.4 mA OutputNoiseVoltage TA = 25°C, C L = 1 μF,IL = 5 mA, 150 μV VIN = 10V,10 Hz ≤ f≤ 100 kHz Long Term Stability 5 mV ThermalResistance JunctiontoCase (5) °C/W JunctiontoAmbient (5) °C/W (1) For−5V 3 amp regulators,see LM145 datasheet. (2) Thisspecificationappliesover−55°C ≤ TJ ≤ +150°C fortheLM120 and 0°C ≤ TJ ≤ +125°C fortheLM320-N. (3) Regulationismeasured atconstantjunctiontemperature.Changes inoutputvoltagedue toheatingeffectsmust be takenintoaccount separately.To ensureconstantjunctiontemperature,lowdutycycle,pulsetestingisused.The LM120/LM320-N seriesdoes have low thermalfeedback,improvinglineand loadregulation.On allothertests,even thoughpower dissipationisinternallylimited,electrical specificationsapplyonlyup toPD . (4) Thisspecificationappliesover−55°C ≤ TJ ≤ +150°C fortheLM120 and 0°C ≤ TJ ≤ +125°C fortheLM320-N. (5) Thermalresistanceoftypically85°C/W (in400 linearfeetairflow),224°C/W (instaticair)junctiontoambient,oftypically21°C/W junctiontocase. ABSOLUTE MAXIMUM RATINGS −12 VOLT REGULATORS (1)(2) Power Dissipation InternallyLimited InputVoltage −35V Input-OutputVoltageDifferential 30V JunctionTemperatures (3) StorageTemperatureRange −65°C to+150°C Lead Temperature (Soldering,10 sec.) 300°C (1) RefertoRETS120H-12 drawingforLM120H-12 orRETS120-12K drawingforLM120K-12 militaryspecifications. (2) IfMilitary/Aerospacespecifieddevicesarerequired,pleasecontacttheTexas InstrumentsSalesOffice/Distributorsforavailabilityand specifications. (3) Thisspecificationappliesover−55°C ≤ TJ ≤ +150°C fortheLM120 and 0°C ≤ TJ ≤ +125°C fortheLM320-N. Copyright© 1998–2013,Texas InstrumentsIncorporated SubmitDocumentationFeedback 3 ProductFolderLinks:LM120 LM320-N

LM120,LM320-N SNVS756C –APRIL 1998–REVISED APRIL 2013 www.ti.com LM120K-12 ELECTRICAL CHARACTERISTICS MetalCan Package Order Numbers UnitsLM120K-12 (TO-3) Design Output Current(ID ) 1A Device Dissipation(PD ) 20W Parameter Conditions(1) Min Typ Max OutputVoltage TJ = 25°C, VIN = 17V, −12.3 −12 −11.7 V ILOAD = 5 mA LineRegulation TJ = 25°C, ILOAD = 5 mA, 4 10 mV VMIN ≤ VIN ≤ VMAX InputVoltage −32 −14 V RippleRejection f= 120 Hz 56 80 dB Load Regulation, TJ = 25°C, VIN = 17V, 30 80 mV (2) 5 mA ≤ ILOAD ≤ ID OutputVoltage, 14.5V≤ VIN ≤ VMAX , −12.5 −11.5 V (3) 5 mA ≤ ILOAD ≤ ID ,P ≤ PD QuiescentCurrent VMIN ≤ VIN ≤ VMAX 2 4 mA QuiescentCurrent TJ = 25°C Change VMIN ≤ VIN ≤ VMAX 0.1 0.4 mA 5 mA ≤ ILOAD ≤ ID 0.1 0.4 mA OutputNoiseVoltage TA = 25°C, C L = 1 μF,IL = 5 mA, 400 μV VIN = 17V,10 Hz ≤ f≤ 100 kHz Long Term Stability 12 120 mV ThermalResistance JunctiontoCase 3 °C/W JunctiontoAmbient 35 °C/W (1) Thisspecificationappliesover−55°C ≤ TJ ≤ +150°C fortheLM120 and 0°C ≤ TJ ≤ +125°C fortheLM320-N. (2) Regulationismeasured atconstantjunctiontemperature.Changes inoutputvoltagedue toheatingeffectsmust be takenintoaccount separately.To ensureconstantjunctiontemperature,lowdutycycle,pulsetestingisused.The LM120/LM320-N seriesdoes have low thermalfeedback,improvinglineand loadregulation.On allothertests,even thoughpower dissipationisinternallylimited,electrical specificationsapplyonlyup toPD . (3) Thisspecificationappliesover−55°C ≤ TJ ≤ +150°C fortheLM120 and 0°C ≤ TJ ≤ +125°C fortheLM320-N. LM120H-12 ELECTRICAL CHARACTERISTICS MetalCan Package Order Numbers LM120H-12 (TO) UnitsDesign Output Current(ID ) 0.2A Device Dissipation(PD ) 2W Parameter Conditions(1) Min Typ Max OutputVoltage TJ = 25°C, VIN = 17V, −12.3 −12 −11.7 V ILOAD = 5 mA LineRegulation TJ = 25°C, ILOAD = 5 mA, 4 10 mV VMIN ≤ VIN ≤ VMAX InputVoltage −32 −14 V RippleRejection f= 120 Hz 56 80 dB Load Regulation, TJ = 25°C, VIN = 17V, 10 25 mV (1) Thisspecificationappliesover−55°C ≤ TJ ≤ +150°C fortheLM120 and 0°C ≤ TJ ≤ +125°C fortheLM320-N.

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LM120,LM320-N www.ti.com SNVS756C –APRIL 1998–REVISED APRIL 2013 LM120H-12 ELECTRICAL CHARACTERISTICS (continued) MetalCan Package Order Numbers LM120H-12 (TO) UnitsDesign Output Current(ID ) 0.2A Device Dissipation(PD ) 2W Parameter Conditions(1) Min Typ Max (2) 5 mA ≤ ILOAD ≤ ID OutputVoltage, 14.5V≤ VIN ≤ VMAX , −12.5 −11.5 V (1) 5 mA ≤ ILOAD ≤ ID ,P ≤ PD QuiescentCurrent VMIN ≤ VIN ≤ VMAX 2 4 mA QuiescentCurrent TJ = 25°C Change VMIN ≤ VIN ≤ VMAX 0.05 0.4 mA 5 mA ≤ ILOAD ≤ ID 0.03 0.4 mA OutputNoiseVoltage TA = 25°C, C L = 1 μF,IL = 5 mA, 400 μV VIN = 17V,10 Hz ≤ f≤ 100 kHz Long Term Stability 12 120 mV ThermalResistance JunctiontoCase (3) °C/W JunctiontoAmbient (3) °C/W (2) Regulationismeasured atconstantjunctiontemperature.Changes inoutputvoltagedue toheatingeffectsmust be takenintoaccount separately.To ensureconstantjunctiontemperature,lowdutycycle,pulsetestingisused.The LM120/LM320-N seriesdoes have low thermalfeedback,improvinglineand loadregulation.On allothertests,even thoughpower dissipationisinternallylimited,electrical specificationsapplyonlyup toPD . (3) Thermalresistanceoftypically85°C/W (in400 linearfeet/minairflow),224°C/W (instaticair)junctiontoambient,oftypically21°C/W junctiontocase. LM320T-12 ELECTRICAL CHARACTERISTICS Power PlasticPackage Order Numbers LM320T-12 (TO-220) UnitsDesign Output Current(ID ) 1A Device Dissipation(PD ) 15W Parameter Conditions(1) Min Typ Max OutputVoltage TJ = 25°C, VIN = 17V, −12.4 −12 −11.6 V ILOAD = 5 mA LineRegulation TJ = 25°C, ILOAD = 5 mA, 4 20 mV VMIN ≤ VIN ≤ VMAX InputVoltage −32 −14.5 V RippleRejection f= 120 Hz 56 80 dB Load Regulation, TJ = 25°C, VIN = 17V, 30 80 mV (2) 5 mA ≤ ILOAD ≤ ID OutputVoltage, 14.5V≤ VIN ≤ VMAX , −12.6 −11.4 V (1) 5 mA ≤ ILOAD ≤ ID ,P ≤ PD QuiescentCurrent VMIN ≤ VIN ≤ VMAX 2 4 mA QuiescentCurrent TJ = 25°C Change VMIN ≤ VIN ≤ VMAX 0.1 0.4 mA 5 mA ≤ ILOAD ≤ ID 0.1 0.4 mA (1) Thisspecificationappliesover−55°C ≤ TJ ≤ +150°C fortheLM120 and 0°C ≤ TJ ≤ +125°C fortheLM320-N. (2) Regulationismeasured atconstantjunctiontemperature.Changes inoutputvoltagedue toheatingeffectsmust be takenintoaccount separately.To ensureconstantjunctiontemperature,lowdutycycle,pulsetestingisused.The LM120/LM320-N seriesdoes have low thermalfeedback,improvinglineand loadregulation.On allothertests,even thoughpower dissipationisinternallylimited,electrical specificationsapplyonlyup toPD . Copyright© 1998–2013,Texas InstrumentsIncorporated SubmitDocumentationFeedback 5 ProductFolderLinks:LM120 LM320-N

LM120,LM320-N SNVS756C –APRIL 1998–REVISED APRIL 2013 www.ti.com LM320T-12 ELECTRICAL CHARACTERISTICS (continued) Power PlasticPackage Order Numbers LM320T-12 (TO-220) UnitsDesign Output Current(ID ) 1A Device Dissipation(PD ) 15W Parameter Conditions(1) Min Typ Max OutputNoiseVoltage TA = 25°C, C L = 1 μF,IL = 5 mA, 400 μV VIN = 17V,10 Hz ≤ f≤ 100 kHz Long Term Stability 24 mV ThermalResistance JunctiontoCase 4 °C/W JunctiontoAmbient 50 °C/W ABSOLUTE MAXIMUM RATINGS −15 VOLT REGULATORS (1)(2) Power Dissipation InternallyLimited InputVoltage LM120/LM320-N −40V LM320T −35V Input-OutputVoltageDifferential 30V JunctionTemperatures (3) StorageTemperatureRange −65°C to+150°C Lead Temperature (Soldering,10 sec.) 300°C (1) RefertoRETS120-15H drawingforLM120H-15 orRETS120-15K drawingforLM120K-15 militaryspecifications. (2) IfMilitary/Aerospacespecifieddevicesarerequired,pleasecontacttheTexas InstrumentsSalesOffice/Distributorsforavailabilityand specifications. (3) Thisspecificationappliesover−55°C ≤ TJ ≤ +150°C fortheLM120 and 0°C ≤ TJ ≤ +125°C fortheLM320-N. LM120K-15 AND LM320K-15 ELECTRICAL CHARACTERISTICS MetalCan Package Order Numbers LM120K-15 LM320K-15 (TO-3) (TO-3) UnitsDesign Output Current(ID ) 1A Device Dissipation(PD ) 20W Parameter Conditions(1) Min Typ Max Min Typ Max OutputVoltage TJ = 25°C, VIN = 20V, −15.3 −15 −14.7 −15.4 −15 −14.6 V ILOAD = 5 mA LineRegulation TJ = 25°C, ILOAD = 5 mA, 5 10 5 20 mV VMIN ≤ VIN ≤ VMAX InputVoltage −35 −17 −35 −17 V RippleRejection f= 120 Hz 56 80 56 80 dB Load Regulation, TJ = 25°C, VIN = 20V, 30 80 30 80 mV (2) 5 mA ≤ ILOAD ≤ ID (1) 5 mA ≤ ILOAD ≤ ID ,P ≤ PD QuiescentCurrent VMIN ≤ VIN ≤ VMAX 2 4 2 4 mA (1) Thisspecificationappliesover−55°C ≤ TJ ≤ +150°C fortheLM120 and 0°C ≤ TJ ≤ +125°C fortheLM320-N. (2) Regulationismeasured atconstantjunctiontemperature.Changes inoutputvoltagedue toheatingeffectsmust be takenintoaccount separately.To ensureconstantjunctiontemperature,lowdutycycle,pulsetestingisused.The LM120/LM320-N seriesdoes have low thermalfeedback,improvinglineand loadregulation.On allothertests,even thoughpower dissipationisinternallylimited,electrical specificationsapplyonlyup toPD .

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LM120,LM320-N www.ti.com SNVS756C –APRIL 1998–REVISED APRIL 2013 LM120K-15 AND LM320K-15 ELECTRICAL CHARACTERISTICS (continued) MetalCan Package Order Numbers LM120K-15 LM320K-15 (TO-3) (TO-3) UnitsDesign Output Current(ID ) 1A Device Dissipation(PD ) 20W Parameter Conditions(1) Min Typ Max Min Typ Max QuiescentCurrent TJ = 25°C Change VMIN ≤ VIN ≤ VMAX 0.1 0.4 0.1 0.4 mA 5 mA ≤ ILOAD ≤ ID 0.1 0.4 0.1 0.4 mA OutputNoiseVoltage TA = 25°C, C L = 1 μF,IL = 5 mA, 400 400 μV VIN = 20V,10 Hz ≤ f≤ 100 kHz Long Term Stability 15 150 15 150 mV ThermalResistance JunctiontoCase 3 3 °C/W JunctiontoAmbient 35 35 °C/W LM120H-15 ELECTRICAL CHARACTERISTICS MetalCan Package Order Numbers LM120H-15 (TO) UnitsDesign Output Current(ID ) 0.2A Device Dissipation(PD ) 2W Parameter Conditions(1) Min Typ Max OutputVoltage TJ = 25°C, VIN = 20V, −15.3 −15 −14.7 V ILOAD = 5 mA LineRegulation TJ = 25°C, ILOAD = 5 mA, 5 10 mV VMIN ≤ VIN ≤ VMAX InputVoltage −35 −17 V RippleRejection f= 120 Hz 56 80 dB Load Regulation, TJ = 25°C, VIN = 20V, 10 25 mV (2) 5 mA ≤ ILOAD ≤ ID OutputVoltage, 17.5V≤ VIN ≤ VMAX , −15.5 −14.5 V (1) 5 mA ≤ ILOAD ≤ ID ,P ≤ PD QuiescentCurrent VMIN ≤ VIN ≤ VMAX 2 4 mA QuiescentCurrent TJ = 25°C Change VMIN ≤ VIN ≤ VMAX 0.05 0.4 mA 5 mA ≤ ILOAD ≤ ID 0.03 0.4 mA OutputNoiseVoltage TA = 25°C, C L = 1 μF,IL = 5 mA, 400 μV VIN = 20V,10 Hz ≤ f≤ 100 kHz Long Term Stability 15 150 mV ThermalResistance JunctiontoCase (3) °C/W JunctiontoAmbient (3) °C/W (1) Thisspecificationappliesover−55°C ≤ TJ ≤ +150°C fortheLM120 and 0°C ≤ TJ ≤ +125°C fortheLM320-N. (2) Regulationismeasured atconstantjunctiontemperature.Changes inoutputvoltagedue toheatingeffectsmust be takenintoaccount separately.To ensureconstantjunctiontemperature,lowdutycycle,pulsetestingisused.The LM120/LM320-N seriesdoes have low thermalfeedback,improvinglineand loadregulation.On allothertests,even thoughpower dissipationisinternallylimited,electrical specificationsapplyonlyup toPD . (3) Thermalresistanceoftypically85°C/W (in400 linearfeet/minairflow),224°C/W (instaticair)junctiontoambient,oftypically21°C/W junctiontocase. Copyright© 1998–2013,Texas InstrumentsIncorporated SubmitDocumentationFeedback 7 ProductFolderLinks:LM120 LM320-N

LM120,LM320-N SNVS756C –APRIL 1998–REVISED APRIL 2013 www.ti.com LM320T-15 ELECTRICAL CHARACTERISTICS Power PlasticPackage Order Numbers LM320T-15 (TO-220) UnitsDesign Output Current(ID ) 1A Device Dissipation(PD ) 15W Parameter Conditions(1) Min Typ Max OutputVoltage TJ = 25°C, VIN = 20V, −15.5 −15 −14.5 V ILOAD = 5 mA LineRegulation TJ = 25°C, ILOAD = 5 mA, 5 20 mV VMIN ≤ VIN ≤ VMAX InputVoltage −35 −17.5 V RippleRejection f= 120 Hz 56 80 dB Load Regulation, TJ = 25°C, VIN = 20V, 30 80 mV (2) 5 mA ≤ ILOAD ≤ ID OutputVoltage, 17.5V≤ VIN ≤ VMAX , −15.7 −14.3 V (1) 5 mA ≤ ILOAD ≤ ID ,P ≤ PD QuiescentCurrent VMIN ≤ VIN ≤ VMAX 2 4 mA QuiescentCurrent TJ = 25°C Change VMIN ≤ VIN ≤ VMAX 0.1 0.4 mA 5 mA ≤ ILOAD ≤ ID 0.1 0.4 mA OutputNoiseVoltage TA = 25°C, C L = 1 μF,IL = 5 mA, 400 μV VIN = 20V,10 Hz ≤ f≤ 100 kHz Long Term Stability 30 mV ThermalResistance JunctiontoCase 4 °C/W JunctiontoAmbient 50 °C/W (1) Thisspecificationappliesover−55°C ≤ TJ ≤ +150°C fortheLM120 and 0°C ≤ TJ ≤ +125°C fortheLM320-N. (2) Regulationismeasured atconstantjunctiontemperature.Changes inoutputvoltagedue toheatingeffectsmust be takenintoaccount separately.To ensureconstantjunctiontemperature,lowdutycycle,pulsetestingisused.The LM120/LM320-N seriesdoes have low thermalfeedback,improvinglineand loadregulation.On allothertests,even thoughpower dissipationisinternallylimited,electrical specificationsapplyonlyup toPD .

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LM120,LM320-N www.ti.com SNVS756C –APRIL 1998–REVISED APRIL 2013 TYPICAL PERFORMANCE CHARACTERISTICS Output Voltagevs RippleRejection Temperature (AllTypes) Figure3. Figure4. Output Impedance TO-3 Output Impedance TO-5 and TO-220 Packages and TO-202 Packages Figure5. Figure6. Minimum Input-Output Minimum Input-Output DifferentialTO-3 and DifferentialTO-5 and TO-220 Packages TO-202 Packages Figure7. Figure8. Copyright© 1998–2013,Texas InstrumentsIncorporated SubmitDocumentationFeedback 9 ProductFolderLinks:LM120 LM320-N

LM120,LM320-N SNVS756C –APRIL 1998–REVISED APRIL 2013 www.ti.com TYPICAL PERFORMANCE CHARACTERISTICS (continued) QuiescentCurrentvs QuiescentCurrentvs InputVoltage Load Current Figure9. Figure10. Maximum Average Power Maximum Average Power Dissipation(TO-3) Dissipation(TO-5) *ThesecurvesforLM120. Derate25°C furtherforLM320-N. Figure11. Figure12. Maximum Average Power Maximum Average Power Dissipation(TO-202) Dissipation(TO-220) Figure13. Figure14.

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LM120,LM320-N www.ti.com SNVS756C –APRIL 1998–REVISED APRIL 2013 TYPICAL PERFORMANCE CHARACTERISTICS (continued) ShortCircuitCurrent Figure15. Copyright© 1998–2013,Texas InstrumentsIncorporated SubmitDocumentationFeedback 11 ProductFolderLinks:LM120 LM320-N

LM120,LM320-N SNVS756C –APRIL 1998–REVISED APRIL 2013 www.ti.com TYPICAL APPLICATIONS Lead and lineregulation— 0.01% temperaturestability— 0.2% †DeterminesZenercurrent. ††Solidtantalum. An LM120-12 orLM120-15 may be used topermithigherinputvoltages,buttheregulatedoutputvoltagemust be at least−15V when usingtheLM120-12 and −18V fortheLM120-15. **Selectresistorstosetoutputvoltage.2 ppm/°C trackingsuggested. Figure16. High Stability1 Amp Regulator *ResistortoleranceofR1 and R2 determinematchingof(+)and (−)inputs. **Necessaryonlyifraw supplycapacitorsaremore than3″ fromregulators An LM3086N arraymay substituteforQ1, D1 and D2 forbetterstabilityand tracking.InthearraydiodetransistorsQ5 and Q4 (inparallel)make up D2; similarly,Q1 and Q2 become D1 and Q3 replacesthe2N2222. Figure17. Wide Range TrackingRegulator

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LM120,LM320-N www.ti.com SNVS756C –APRIL 1998–REVISED APRIL 2013 Figure18. CurrentSource SELECT R2 AS FOLLOWS: LM120-5 300Ω LM120-12 750Ω LM120-15 1k *C3 optional.Improvestransientresponseand ripplerejection. Figure19. VariableOutput CurrentSource Copyright© 1998–2013,Texas InstrumentsIncorporated SubmitDocumentationFeedback 13 ProductFolderLinks:LM120 LM320-N

LM120,LM320-N SNVS756C –APRIL 1998–REVISED APRIL 2013 www.ti.com See Performance(Typical) *ResistortoleranceofR4 and R5 determinematchingof(+)and (−)outputs. **Necessaryonlyifraw supplyfiltercapacitorsaremore than2 inchesfromregulators. Figure20. ±15V,1 Amp TrackingRegulators Performance (Typical) Load RegulationatΔIL = 1A 10 mV 1 mV OutputRipple,C IN = 3000 μF, 100 μVrms 100 μVrmsIL = 1A TemperatureStability +50 mV +50 mV OutputNoise10 Hz ≤ f≤ 10 kHz 150 μVrms 150 μVrms LightControllersUsing SiliconPhoto Cells *Lamp brightnessincreasesuntiliI= 5V/R1 (iIcan be setas lowas 1 μA). †Necessaryonlyifraw supplyfiltercapacitorismore than2 inchesfromLM320MP.

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LM120,LM320-N www.ti.com SNVS756C –APRIL 1998–REVISED APRIL 2013 *Lamp brightnessincreasesuntiliI=iQ (1mA) + 5V/R1. †Necessaryonlyifraw supplyfiltercapacitorismore than2 inchesfromLM320-N. Connection Diagram Figure21. SteelMetalCan Package TO-3 (NDS) (Bottom View) Figure22. MetalCan Package TO (NDT) (Bottom View) Figure23. Power Package TO-220 (NDE) (FrontView) Copyright© 1998–2013,Texas InstrumentsIncorporated SubmitDocumentationFeedback 15 ProductFolderLinks:LM120 LM320-N

LM120,LM320-N SNVS756C –APRIL 1998–REVISED APRIL 2013 www.ti.com Schematic Diagrams Figure24. −5V Figure25. −12V and −15V

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LM120,LM320-N www.ti.com SNVS756C –APRIL 1998–REVISED APRIL 2013

REVISION HISTORY

www.ti.com 11-Nov-2025 PACKAGING INFORMATION Orderable part number Status (1) Material type (2) Package | Pins Package qty | Carrier RoHS (3) Lead finish/ Ball material (4) MSL rating/ Peak reflow (5) Op temp (°C) Part marking (6) LM120H-12 Active Production TO (NDT) | 3 500 | BULK Yes AU Level-1-NA-UNLIM -55 to 150 ( LM120H-12P+, LM1 20H-12P+) LM120H-12/NOPB Active Production TO (NDT) | 3 500 | BULK Yes AU Level-1-NA-UNLIM -55 to 150 ( LM120H-12P+, LM1 20H-12P+) LM120H-15 Active Production TO (NDT) | 3 500 | BULK Yes AU Level-1-NA-UNLIM -55 to 150 ( LM120H-15P+, LM1 20H-15P+) LM120H-15/NOPB Active Production TO (NDT) | 3 500 | BULK Yes AU Level-1-NA-UNLIM -55 to 150 ( LM120H-15P+, LM1 20H-15P+) LM120H-5.0 Active Production TO (NDT) | 3 500 | BULK Yes AU Level-1-NA-UNLIM -55 to 150 ( LM120H-5.0P+, LM 120H-5.0P+) LM120H-5.0/NOPB Active Production TO (NDT) | 3 500 | BULK Yes AU Level-1-NA-UNLIM -55 to 150 ( LM120H-5.0P+, LM 120H-5.0P+) LM320T-15/NOPB Active Production TO-220 (NDE) | 3 45 | TUBE Yes SN Level-1-NA-UNLIM 0 to 125 LM320T -15 P+ LM320T-15/NOPB.B Active Production TO-220 (NDE) | 3 45 | TUBE Yes SN Level-1-NA-UNLIM 0 to 125 LM320T -15 P+ (1) Status: For more details on status, see our product life cycle. (2) Material type: When designated, preproduction parts are prototypes/experimental devices, and are not yet approved or released for full production. Testing and final process, including without limitation quality assurance, reliability performance testing, and/or process qualification, may not yet be complete, and this item is subject to further changes or possible discontinuation. If available for ordering, purchases will be subject to an additional waiver at checkout, and are intended for early internal evaluation purposes only. These items are sold without warranties of any kind. (3) RoHS values: Yes, No, RoHS Exempt. See the TI RoHS Statement for additional information and value definition. (4) Lead finish/Ball material: Parts may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead finish/Ball material values may wrap to two lines if the finish value exceeds the maximum column width. (5) MSL rating/Peak reflow: The moisture sensitivity level ratings and peak solder (reflow) temperatures. In the event that a part has multiple moisture sensitivity ratings, only the lowest level per JEDEC standards is shown. Refer to the shipping label for the actual reflow temperature that will be used to mount the part to the printed circuit board. (6) Part marking: There may be an additional marking, which relates to the logo, the lot trace code information, or the environmental category of the part. Addendum-Page 1

www.ti.com 11-Nov-2025 Multiple part markings will be inside parentheses. Only one part marking contained in parentheses and separated by a "~" will appear on a part. If a line is indented then it is a continuation of the previous line and the two combined represent the entire part marking for that device. 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. Addendum-Page 2

PACKAGE MATERIALS INFORMATION www.ti.com 10-Aug-2026 TUBE L - Tube length T - Tube height W - Tube width B - Alignment groove width *All dimensions are nominal Device Package Name Package Type Pins SPQ L (mm) W (mm) T (µm) B (mm) LM320T-15/NOPB NDE TO-220 3 45 502 33 6985 4.06 LM320T-15/NOPB.B NDE TO-220 3 45 502 33 6985 4.06 Pack Materials-Page 1

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Selected Specification

Texas Instruments LM120 overview.

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Summary

LM120/LM320-N Series 3-Terminal Negative Regulators

Description

LM120/LM320-N Series 3-Terminal Negative Regulators

Source title LM120 Datasheet(PDF) - Texas Instruments

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