TC1046 High Precision Temperature-to-Voltage Converter Features General Description • Supply Voltage Range: 2.7V to 4.4V • Wide Temperature Measurement Range: -40oC to +125C • High Temperature Converter Accuracy: ± 2oC, Max, at 25°C • Linear Temperature Slope: 6.25mV/oC • Very Low Supply Current: 35A Typical • Small 3-Pin SOT-23B Package The TC1046 is a linear output temperature sensor whose output voltage is directly proportional to measured temperature. The TC1046 can accurately measure temperature from -40°C to +125°C. The TC1046 is packaged in a 3-Pin SOT-23B package, making them ideal for space critical applications. Applications • • • • • • • The output voltage range for these devices is typically 174mV at -40°C, 424mV at 0°C, 580 mV at +25°C, and 1205mV at +125°C. A 6.25mV/°C voltage slope allows for the wide temperature range. Cellular Phones Power Supply Thermal Shutdown Temperature Controlled Fans Temperature Measurement/Instrumentation Temperature Regulators Consumer Electronics Portable Battery Powered Equipment Functional Block Diagram VDD = 2.5V to 5.5V PICmicro® Microcontroller 1 VDD VOUT TC1046 Device Selection Table Part Number Package Temp. Range TC1046VNB 3-Pin SOT-23B -40°C to +125°C 2 A/D Converter VSS 3 Package Type 3-Pin SOT-23B* VSS 3 TC1046 1 2 VDD VOUT Note: *3-Pin SOT-23B is equivalent to JEDEC TO-236 2001-2012 Microchip Technology Inc. DS21496C-page 1 TC1046 1.0 ELECTRICAL CHARACTERISTICS *Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions above those indicated in the operation sections of the specifications is not implied. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability. Absolute Maximum Ratings* Supply Voltage ......................................................+7V Voltage on Any Pin with Respect to Supplies: .................................................VSS -0.3 to VDD + 0.3V Operating Temperature ......................-40°C to +125°C Storage Temperature Range ..............-55°C to +150°C TC1046 ELECTRICAL SPECIFICATIONS Electrical Characteristics: These specifications apply for the entire supply voltage range and for TA = -40°C to +125°C, unless otherwise specified. Symbol Parameter Min Typ Max Units Test Conditions VDD Supply Voltage 2.7 — 4.4 V IQ Supply Current, Operating — 35 60 A AV Average Slope of Output Voltage — 6.25 — mV/°C TMPACY Temperature Accuracy at 25°C -2 -3 — ±0.5 ±0.5 1.0 +2 +3 — °C °C °C TA = 25°C TA = +125°C TA = -40°C VOUT Output Voltage — 568 1187 174 580 1205 193 592 1224 mV mV mV TA = -40°C TA = 25°C TA = +125°C IOUT Output Source and Sink Current 100 — — A DS21496C-page 2 2001-2012 Microchip Technology Inc. TC1046 2.0 PIN DESCRIPTIONS The descriptions of the pins are listed in Table 2-1 TABLE 2-1: PIN FUNCTION TABLE Pin Number (3-Pin SOT-23B) Symbol 1 VDD Input Supply Voltage 2 VOUT Temperature Sensor Output 3 VSS 2001-2012 Microchip Technology Inc Description Ground DS21496C-page 3 TC1046 3.0 DETAILED DESCRIPTION The TC1046 has an output voltage that varies linearly with temperature in degrees Celsius. See Figure 3-1, “Output Voltage versus Temperature” for the TC1046. The temperature slope is fixed at 6.25mV/°C and the output voltage at 0°C is 424mV. FIGURE 3-1: OUTPUT VOLTAGE VS. TEMPERATURE VOUT = (6.25 mV/ (˚C) (Temperature (˚C) + 424mV 1.20525 1.174 1.049 VOUT (Volts) 0.924 0.799 0.674 0.549 0.424 0.299 0.174 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 125 TEMPERATURE (˚C) DS21496C-page 4 2001-2012 Microchip Technology Inc. TC1046 4.0 Note: TYPICAL CHARACTERISTICS The graphs and tables provided following this note are a statistical summary based on a limited number of samples and are provided for informational purposes only. The performance characteristics listed herein are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified operating range (e.g., outside specified power supply range) and therefore outside the warranted range. Temperature Accuracy vs. Temperature 4.0 TEMP. ACCURACY (˚C) 3.0 2.0 VDD VDD = 2.5V = 5.5V 1.0 0.0 -1.0 -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 IDD (µA) 40.0 30.0 VDD = 2.5V 20.0 10.0 0.0 –40 –25 –10 5 20 35 50 65 80 95 110 125 TEMPERATURE (˚C) 2001-2012 Microchip Technology Inc DS21496C-page 5 TC1046 5.0 PACKAGING INFORMATION 5.1 Package Marking Information 1 & 2 = part number code + temperature range and voltage (two letter code) Ex: 1046VNB = AK 3 = Year and two-month period code 4 = Lot ID number 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 3-Pin SOT-23B DS21496C-page 6 Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size 8 mm 4 mm 3000 7 in 2001-2012 Microchip Technology Inc. TC1046 5.3 Package Dimensions Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging 3-Pin SOT-23B .021 (0.54) .015 (0.37) .055 (1.40) .047 (1.20) .104 (2.64) .083 (2.10) .024 (0.60) .017 (0.44) .120 (3.05) .105 (2.67) .007 (0.18) .003 (0.08) 8° MAX. .040 (1.02) .031 (0.79) .004 (0.10) .001 (0.02) .081 (2.05) .070 (1.78) .010 (0.25) .005 (0.13) Dimensions: inches (mm) 2001-2012 Microchip Technology Inc DS21496C-page 7 TC1046 6.0 REVISION HISTORY Revision C (December 2012) Added a note to each package outline drawing. DS21496C-page 8 2001-2012 Microchip Technology Inc. TC1046 SALES AND SUPPORT Data Sheets Products supported by a preliminary Data Sheet may have an errata sheet describing minor operational differences and recommended workarounds. To determine if an errata sheet exists for a particular device, please contact one of the following: 1. 2. Your local Microchip sales office The Microchip Worldwide Site (www.microchip.com) Please specify which device, revision of silicon and Data Sheet (include Literature #) you are using. New Customer Notification System Register on our web site (www.microchip.com/cn) to receive the most current information on our products. 2001-2012 Microchip Technology Inc. DS21496C-page 9 TC1046 NOTES: DS21496C-page 10 2001-2012 Microchip Technology Inc. Note the following details of the code protection feature on Microchip devices: • Microchip products meet the specification contained in their particular Microchip Data Sheet. • Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the intended manner and under normal conditions. • There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data Sheets. Most likely, the person doing so is engaged in theft of intellectual property. • Microchip is willing to work with the customer who is concerned about the integrity of their code. • Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not mean that we are guaranteeing the product as “unbreakable.” Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act. Information contained in this publication regarding device applications and the like is provided only for your convenience and may be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED, WRITTEN OR ORAL, STATUTORY OR OTHERWISE, RELATED TO THE INFORMATION, INCLUDING BUT NOT LIMITED TO ITS CONDITION, QUALITY, PERFORMANCE, MERCHANTABILITY OR FITNESS FOR PURPOSE. Microchip disclaims all liability arising from this information and its use. Use of Microchip devices in life support and/or safety applications is entirely at the buyer’s risk, and the buyer agrees to defend, indemnify and hold harmless Microchip from any and all damages, claims, suits, or expenses resulting from such use. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights. Trademarks The Microchip name and logo, the Microchip logo, dsPIC, FlashFlex, KEELOQ, KEELOQ logo, MPLAB, PIC, PICmicro, PICSTART, PIC32 logo, rfPIC, SST, SST Logo, SuperFlash and UNI/O are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. FilterLab, Hampshire, HI-TECH C, Linear Active Thermistor, MTP, SEEVAL and The Embedded Control Solutions Company are registered trademarks of Microchip Technology Incorporated in the U.S.A. Silicon Storage Technology is a registered trademark of Microchip Technology Inc. in other countries. Analog-for-the-Digital Age, Application Maestro, BodyCom, chipKIT, chipKIT logo, CodeGuard, dsPICDEM, dsPICDEM.net, dsPICworks, dsSPEAK, ECAN, ECONOMONITOR, FanSense, HI-TIDE, In-Circuit Serial Programming, ICSP, Mindi, MiWi, MPASM, MPF, MPLAB Certified logo, MPLIB, MPLINK, mTouch, Omniscient Code Generation, PICC, PICC-18, PICDEM, PICDEM.net, PICkit, PICtail, REAL ICE, rfLAB, Select Mode, SQI, Serial Quad I/O, Total Endurance, TSHARC, UniWinDriver, WiperLock, ZENA and Z-Scale are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. GestIC and ULPP are registered trademarks of Microchip Technology Germany II GmbH & Co. & KG, a subsidiary of Microchip Technology Inc., in other countries. All other trademarks mentioned herein are property of their respective companies. © 2001-2012, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved. Printed on recycled paper. ISBN: 9781620768822 QUALITY MANAGEMENT SYSTEM CERTIFIED BY DNV == ISO/TS 16949 == 2001-2012 Microchip Technology Inc. Microchip received ISO/TS-16949:2009 certification for its worldwide headquarters, design and wafer fabrication facilities in Chandler and Tempe, Arizona; Gresham, Oregon and design centers in California and India. The Company’s quality system processes and procedures are for its PIC® MCUs and dsPIC® DSCs, KEELOQ® code hopping devices, Serial EEPROMs, microperipherals, nonvolatile memory and analog products. In addition, Microchip’s quality system for the design and manufacture of development systems is ISO 9001:2000 certified. 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