TC1047/TC1047A Precision Temperature-to-Voltage Converter Features General Description • Supply Voltage Range: - TC1047: 2.7V to 4.4V - TC1047A: 2.5V to 5.5V • Wide Temperature Measurement Range: - -40oC to +125oC • High Temperature Converter Accuracy: - ± 2oC, Max, at 25°C • Linear Temperature Slope: 10 mV/°C (typ.) • Available in 3-Pin SOT-23B Package • Very Low Supply Current: - 35 µA Typical The TC1047 and TC1047A are linear voltage output temperature sensors whose output voltage is directly proportional to the measured temperature. The TC1047 and TC1047A can accurately measure temperature from -40°C to +125°C. With the TC1047, the supply voltage can vary between 2.7V and 4.4V. The power supply range of the TC1047A is from 2.5V to 5.5V. Applications • • • • • • • Cellular Phones Power Supply Thermal Shutdown Temperature-Controlled Fans Temperature Measurement/Instrumentation Temperature Regulators Consumer Electronics Portable Battery-Powered Equipment The output voltage range for these devices is typically 100 mV at -40°C, 500 mV at 0°C, 750 mV at +25°C and 1.75V at +125°C. A 10 mV/°C voltage slope output response allows for a predictable temperature measurement over a wide temperature range. The TC1047 and TC1047A are packaged in 3-pin SOT-23B packages, making them ideal for space-critical applications. Package Type 3-Pin SOT-23B(NOTE) VSS 3 Block Diagram TC1047/1047A VDD = 2.5V to 5.5V PICmicro® Microcontroller VDD TC1047A A/D Converter 1 2 VDD VOUT Note: 3-Pin SOT-23B is equivalent to JEDEC TO-236 VSS © 2005 Microchip Technology Inc. DS21498C-page 1 TC1047/TC1047A 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 ELECTRICAL CHARACTERISTICS Electrical Specifications: Unless otherwise indicated, these specifications apply for the entire supply voltage range and for TA = -40°C to +125°C. Parameters Supply Voltage Sym Min Typ Max Units VDD 2.7 — 4.4 V TC1047 2.5 — 5.5 V TC1047A Supply Current, Operating IQ — 35 60 µA Average Slope of Output Voltage AV — 10 — mV/°C Temperature Accuracy Output Voltage Output Source and Sink Current TMPACY VOUT IOUT Conditions -2 ±0.5 +2 °C TA = 25°C -3 ±0.5 +3 °C TA = +125°C — 1.0 — °C TA = -40°C — 100 — mV TA = -40°C 730 750 770 mV TA = 25°C 1720 1750 1780 mV TA = +125°C 100 — — µA TEMPERATURE CHARACTERISTICS Electrical Specifications: Unless otherwise indicated, VDD = +2.3V to +5.5V and VSS = GND. Parameters Sym Min Typ Max Units Specified Temperature Range TA -40 — +85 °C Operating Temperature Range TA -40 — +125 °C Storage Temperature Range TA -65 — +150 °C θJA — 336 — °C/W Conditions Temperature Ranges Note 1 Thermal Package Resistances Thermal Resistance, 3L-SOT-23B Note 1: The TC1047/TC1047A operate over this extended temperature range, but with reduced performance. In any case, the Junction Temperature (TJ) must not exceed the Absolute Maximum specification of +150°C. DS21498C-page 2 © 2005 Microchip Technology Inc. TC1047/TC1047A 2.0 TYPICAL PERFORMANCE CURVES Note: 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. Note: Unless otherwise indicated, VDD = 2.7V thru 4.4V and TA = -40°C to +125°C. 50 3 VDD = 5.5V 40 VDD = 2.5V 1 VDD = 2.5V IDD (μA) Temp Accy (°C) 2 0 VDD = 5.5V –1 –2 30 20 10 Temperature (°C) FIGURE 2-1: Temperature. Temperature Accuracy vs. © 2005 Microchip Technology Inc. 125 110 95 80 65 50 35 20 5 –10 –25 –40 –3 0 -40 -25 -10 5 20 35 50 65 80 95 110 125 Temp. (°C) FIGURE 2-2: Temperature. Supply Current vs. DS21498C-page 3 TC1047/TC1047A 3.0 PIN DESCRIPTIONS The descriptions of the pins are listed in Table 3-1. TABLE 3-1: 4.0 PIN FUNCTION TABLE Pin No. Symbol Description 1 VDD Input Supply Voltage 2 VOUT Temperature Sensor Output Terminal 3 VSS Ground Terminal DETAILED DESCRIPTION The TC1047 and TC1047A have an output voltage that varies linearly with temperature in degrees Celsius. Figure 4-1 shows a plot of the output voltage versus temperature for the TC1047 and TC1047A. The temperature slope is fixed at 10 mV/°C and the output voltage at 0°C is 500 mV. VOUT = (10 mV/°C) (Temperature °C) + 500 mV 1.75 1.7 VOUT (Volts) 1.5 1.3 1.1 0.9 0.7 0.5 0.3 0.1 –40 –30 –20 –10 0 10 20 30 40 50 60 70 80 90 100 110 120 125 Temperature (°C) FIGURE 4-1: DS21498C-page 4 Output Voltage vs. Temperature. © 2005 Microchip Technology Inc. TC1047/TC1047A 5.0 PACKAGE INFORMATION 5.1 Package Marking Information 3-Pin SOT-23B !"#$ 1 & 2 = part number code + temperature range and voltage Part Number Code TC1047 AL TC1047A BL 3 = year and quarter code 4 = lot ID number Legend: XX...X Y YY WW NNN e3 * Note: Customer-specific information* Year code (last digit of calendar year) Year code (last 2 digits of calendar year) Week code (week of January 1 is week ‘01’) Alphanumeric traceability code Pb-free JEDEC designator for Matte Tin (Sn) This package is Pb-free. The Pb-free JEDEC designator ( e3 ) can be found on the outer packaging for this package. In the event the full Microchip part number cannot be marked on one line, it will be carried over to the next line, thus limiting the number of available characters for customer-specific information. © 2005 Microchip Technology Inc. DS21498C-page 5 TC1047/TC1047A 3-Lead Plastic Small Outline Transistor (TT) (SOT-23) E E1 2 p1 B n D p 1 a c A f b A2 A1 L Units Dimension Limits n p MIN INCHES* NOM 3 .038 .076 .040 .037 .002 .093 .051 .115 .018 5 .006 .017 5 5 MAX MILLIMETERS NOM 3 0.96 1.92 0.89 1.01 0.88 0.95 0.01 0.06 2.10 2.37 1.20 1.30 2.80 2.92 0.35 0.45 0 5 0.09 0.14 0.37 0.44 0 5 0 5 MIN Number of Pins Pitch p1 Outside lead pitch (basic) Overall Height A .035 .044 Molded Package Thickness A2 .035 .040 Standoff A1 .000 .004 Overall Width E .083 .104 Molded Package Width E1 .047 .055 Overall Length D .110 .120 Foot Length L .014 .022 f Foot Angle 0 10 c Lead Thickness .004 .007 Lead Width B .015 .020 a Mold Draft Angle Top 0 10 b Mold Draft Angle Bottom 0 10 *Controlling Parameter Notes: Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed .005" (0.127mm) per side. JEDEC Equivalent: TO-236 Drawing No. C04-104 DS21498C-page 6 MAX 1.12 1.02 0.10 2.64 1.40 3.04 0.55 10 0.18 0.51 10 10 Revised 03-11-05 © 2005 Microchip Technology Inc. TC1047/TC1047A APPENDIX A: REVISION HISTORY Revision C (May 2005) The following is the list of modifications: 1. Added Appendix A: Revision History. Revision B (May 2002) Revision A (March 2001) • Original Release of this Document. © 2005 Microchip Technology Inc. DS21498C-page 7 TC1047/TC1047A NOTES: DS21498C-page 8 © 2005 Microchip Technology Inc. TC1047/TC1047A PRODUCT IDENTIFICATION SYSTEM To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office. PART NO. X XX Device Temperature Range Package Device: TC1047: Precision Temp-to-Voltage Converter TC1047xTR: Precision Temp-to-Voltage Converter (Tape and Reel) Temperature Range: V= Package: NB = Plastic Small Outline Transistor, SOT-23B, 3-lead Examples: a) TC1047VNBTR: age Converter Precision Temp-to-Volt- b) TC1047AVNBTR: Precision Temp-to-Voltage Converter -40°C to +125°C © 2005 Microchip Technology Inc. DS21498C-page 9 TC1047/TC1047A NOTES: DS21498C-page 10 © 2005 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’s products as critical components in life support systems is not authorized except with express written approval by Microchip. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights. Trademarks The Microchip name and logo, the Microchip logo, Accuron, dsPIC, KEELOQ, microID, MPLAB, PIC, PICmicro, PICSTART, PRO MATE, PowerSmart, rfPIC, and SmartShunt are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. AmpLab, FilterLab, Migratable Memory, MXDEV, MXLAB, PICMASTER, SEEVAL, SmartSensor and The Embedded Control Solutions Company are registered trademarks of Microchip Technology Incorporated in the U.S.A. Analog-for-the-Digital Age, Application Maestro, dsPICDEM, dsPICDEM.net, dsPICworks, ECAN, ECONOMONITOR, FanSense, FlexROM, fuzzyLAB, In-Circuit Serial Programming, ICSP, ICEPIC, Linear Active Thermistor, MPASM, MPLIB, MPLINK, MPSIM, PICkit, PICDEM, PICDEM.net, PICLAB, PICtail, PowerCal, PowerInfo, PowerMate, PowerTool, rfLAB, rfPICDEM, Select Mode, Smart Serial, SmartTel, Total Endurance and WiperLock 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. All other trademarks mentioned herein are property of their respective companies. © 2005, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved. Printed on recycled paper. Microchip received ISO/TS-16949:2002 quality system certification for its worldwide headquarters, design and wafer fabrication facilities in Chandler and Tempe, Arizona and Mountain View, California in October 2003. The Company’s quality system processes and procedures are for its PICmicro® 8-bit MCUs, 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. © 2005 Microchip Technology Inc. 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