TC1046 High Precision Temperature-to-Voltage Converter Features General Description • SupplyVoltageRange:2.7Vto4.4V The TC1046 is a linear output temperature sensor (cid:127) WideTemperatureMeasurementRange: whose output voltage is directly proportional to -40oCto+125οC measured temperature. The TC1046 can accurately measuretemperaturefrom-40°Cto+125°C. (cid:127) HighTemperatureConverterAccuracy: ±2oC,Max,at25°C Theoutputvoltagerangeforthesedevicesistypically (cid:127) LinearTemperatureSlope:6.25mV/ oC 174mVat-40°C,424mVat0°C,580mVat+25°C,and (cid:127) VeryLowSupplyCurrent:35 µATypical 1205mVat+125°C.A6.25mV/°Cvoltageslopeallows forthewidetemperaturerange. (cid:127) Small3-PinSOT-23BPackage TheTC1046ispackagedina3-PinSOT-23Bpackage, Applications makingthemidealforspacecriticalapplications. (cid:127) CellularPhones FunctionalBlock Diagram (cid:127) PowerSupplyThermalShutdown (cid:127) TemperatureControlledFans VDD = 2.5V to 5.5V (cid:127) TemperatureMeasurement/Instrumentation PICmicro® (cid:127) TemperatureRegulators 1 Microcontroller (cid:127) ConsumerElectronics VDD (cid:127) PortableBatteryPoweredEquipment VOUT 2 A/D Converter TC1046 Device Selection Table PartNumber Package Temp.Range VSS 3 TC1046VNB 3-PinSOT-23B -40°Cto+125°C Package Type 3-Pin SOT-23B* VSS 3 TC1046 1 2 VDD VOUT Note: *3-Pin SOT-23B is equivalent to JEDEC TO-236  2002MicrochipTechnologyInc. DS21496B-page 1

TC1046 1.0 ELECTRICAL *Stressesabovethoselistedunder"AbsoluteMaximumRat- ings"maycausepermanentdamagetothedevice.Theseare CHARACTERISTICS stressratings only and functional operation of the device at these or any other conditions above those indicated in the Absolute Maximum Ratings* operationsectionsofthespecificationsisnotimplied.Expo- sure to Absolute Maximum Rating conditions for extended SupplyVoltage ......................................................+7V periodsmayaffectdevicereliability. VoltageonAnyPinwithRespecttoSupplies: .................................................V -0.3toV +0.3V SS DD OperatingTemperature......................-40°Cto+125°C StorageTemperatureRange..............-55°Cto+150°C TC1046ELECTRICALSPECIFICATIONS ElectricalCharacteristics:ThesespecificationsapplyfortheentiresupplyvoltagerangeandforT =-40°Cto+125°C,unless A otherwisespecified. Symbol Parameter Min Typ Max Units TestConditions V SupplyVoltage 2.7 — 4.4 V DD I SupplyCurrent,Operating — 35 60 µA Q A AverageSlopeofOutputVoltage — 6.25 — mV/°C V TMP TemperatureAccuracyat25°C -2 ±0.5 +2 °C T =25°C ACY A -3 ±0.5 +3 °C T = +125°C A — 1.0 — °C T =-40°C A V OutputVoltage — 174 193 mV T =-40°C OUT A 568 580 592 mV T =25°C A 1187 1205 1224 mV T = +125°C A I OutputSourceandSinkCurrent 100 — — µA OUT 2.0 PIN DESCRIPTIONS ThedescriptionsofthepinsarelistedinTable2-1 TABLE 2-1: PINFUNCTIONTABLE PinNumber Symbol Description (3-PinSOT-23B) 1 V InputSupplyVoltage DD 2 V TemperatureSensorOutput OUT 3 V Ground SS  DS21496B-page 2 2002MicrochipTechnologyInc.

TC1046 3.0 DETAILED DESCRIPTION TheTC1046hasanoutput voltagethatvarieslinearly with temperature in degrees Celsius. See Figure3-1, “Output Voltage versus Temperature” for the TC1046. The temperature slope is fixed at 6.25mV/°C and the outputvoltageat0°Cis424mV. FIGURE3-1: OUTPUTVOLTAGE VS.TEMPERATURE VOUT = (6.25 mV/ (˚C) (Temperature (˚C) + 424mV 1.20525 1.174 1.049 0.924 s) 0.799 olt V (T 0.674 U O 0.549 V 0.424 0.299 0.174 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100110 120 125 TEMPERATURE (˚C)  2002MicrochipTechnologyInc DS21496B-page 3

TC1046 4.0 TYPICAL CHARACTERISTICS Note: Thegraphsandtablesprovidedfollowingthisnoteareastatisticalsummarybasedonalimitednumberof samplesandareprovidedforinformationalpurposesonly.Theperformancecharacteristicslistedhereinare nottestedorguaranteed.Insomegraphsortables,thedatapresentedmaybeoutsidethespecified operatingrange(e.g.,outsidespecifiedpowersupplyrange)andthereforeoutsidethewarrantedrange. Temperature Accuracy vs. Temperature 4.0 3.0 Y (C)˚ 2.0 VDD = 2.5V VDD = 5.5V AC 1.0 R U CC 0.0 A P. M -1.0 E T -2.0 -3.0 -4.0 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 TEMPERATURE (˚C) Supply Current IDD vs. Temperature 60.0 50.0 VDD =5.5V 40.0 A) µ 30.0 ( D D I 20.0 VDD = 2.5V 10.0 0.0 –40 –25 –10 5 20 35 50 65 80 95 110 125 TEMPERATURE (˚C)  DS21496B-page 4 2002MicrochipTechnologyInc.

TC1046 5.0 PACKAGING INFORMATION 5.1 Package Marking Information 1 & 2 = part number code + temperature range and voltage(twolettercode) Ex:1046VNB=AK 3=Yearandtwo-monthperiodcode 4=LotIDnumber 5.2 Taping Form Component Taping Orientation for 3-Pin SOT-23B (JEDEC TO-236) Devices User Direction of Feed Device Marking W PIN 1 P Standard Reel Component Orientation For TR Suffix Device (Mark Right Side Up) Carrier Tape, Number of Components Per Reel and Reel Size Package Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size 3-Pin SOT-23B 8 mm 4 mm 3000 7 in  2002MicrochipTechnologyInc DS21496B-page 5

TC1046 5.3 Package Dimensions 3-Pin SOT-23B .021 (0.54) .015 (0.37) .104 (2.64) .055 (1.40) .083 (2.10) .047 (1.20) .024 (0.60) .017 (0.44) .120 (3.05) .105 (2.67) .040 (1.02) 8° MAX. ..000073 ((00..1088)) .031 (0.79) .010 (0.25) .004 (0.10) .081 (2.05) .005 (0.13) .001 (0.02) .070 (1.78) Dimensions: inches (mm)  DS21496B-page 6 2002MicrochipTechnologyInc.

TC1046 SALES AND SUPPORT DataSheets ProductssupportedbyapreliminaryDataSheetmayhaveanerratasheetdescribingminoroperationaldifferencesandrecom- mendedworkarounds.Todetermineifanerratasheetexistsforaparticulardevice,pleasecontactoneofthefollowing: 1. YourlocalMicrochipsalesoffice 2. TheMicrochipCorporateLiteratureCenterU.S.FAX:(480)792-7277 3. TheMicrochipWorldwideSite(www.microchip.com) Pleasespecifywhichdevice,revisionofsiliconandDataSheet(includeLiterature#)youareusing. NewCustomerNotificationSystem Registeronourwebsite(www.microchip.com/cn)toreceivethemostcurrentinformationonourproducts.  2002MicrochipTechnologyInc. DS21496B-page 7

TC1046 NOTES:  DS21496B-page 8 2002MicrochipTechnologyInc.

TC1046 Information contained in this publication regarding device Trademarks applicationsandthelikeisintendedthroughsuggestiononly andmaybesupersededbyupdates.Itisyourresponsibilityto The Microchip name and logo, the Microchip logo, FilterLab, ensure that your application meets with your specifications. KEELOQ, microID, MPLAB, PIC, PICmicro, PICMASTER, No representation or warranty is given and no liability is PICSTART,PROMATE, SEEVAL and TheEmbedded Control assumedbyMicrochipTechnologyIncorporatedwithrespect SolutionsCompanyareregisteredtrademarksofMicrochipTech- totheaccuracyoruseofsuchinformation,orinfringementof nologyIncorporatedintheU.S.A.andothercountries. patentsorotherintellectualpropertyrightsarisingfromsuch dsPIC,ECONOMONITOR,FanSense,FlexROM,fuzzyLAB, useorotherwise.UseofMicrochip’sproductsascriticalcom- In-Circuit Serial Programming, ICSP, ICEPIC, microPort, ponentsinlifesupportsystemsisnotauthorizedexceptwith Migratable Memory, MPASM, MPLIB, MPLINK, MPSIM, expresswritten approvalbyMicrochip.Nolicensesarecon- MXDEV, PICC, PICDEM, PICDEM.net, rfPIC, Select Mode veyed,implicitlyorotherwise,underanyintellectualproperty andTotalEndurancearetrademarksofMicrochipTechnology rights. IncorporatedintheU.S.A. SerializedQuickTurnProgramming(SQTP)isaservicemark ofMicrochipTechnologyIncorporatedintheU.S.A. All other trademarks mentioned herein are property of their respectivecompanies. © 2002, Microchip Technology Incorporated, Printed in the U.S.A.,AllRightsReserved. Printedonrecycledpaper. MicrochipreceivedQS-9000qualitysystem certificationforitsworldwideheadquarters, designandwaferfabricationfacilitiesin ChandlerandTempe,ArizonainJuly1999 andMountainView,CaliforniainMarch2002. TheCompany’squalitysystemprocessesand proceduresareQS-9000compliantforits PICmicro®8-bitMCUs,KEELOQ®codehopping devices,SerialEEPROMs,microperipherals, non-volatilememoryandanalogproducts.In addition,Microchip’squalitysystemforthe designandmanufactureofdevelopment systemsisISO9001certified.  2002MicrochipTechnologyInc. DS21496B-page 9

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