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? 2005 microchip technology inc. ds21498c-page 1 tc1047/tc1047a features ? supply voltage range: - tc1047: 2.7v to 4.4v - tc1047a: 2.5v to 5.5v ? wide temperature measurement range: --40 o c to +125 o c ? high temperature converter accuracy: - 2 o c, max, at 25c ? linear temperature slope: 10 mv/c (typ.) ? available in 3-pin sot-23b package ? very low supply current: -35a typical applications ? cellular phones ? power supply thermal shutdown ? temperature-controlled fans ? temperature measurement/instrumentation ? temperature regulators ? consumer electronics ? portable battery-powered equipment block diagram general description 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 -40c to +125c. 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. the output voltage range for these devices is typically 100 mv at -40c, 500 mv at 0c, 750 mv at +25c and 1.75v at +125c. 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 tc1047a v dd = 2.5v to 5.5v v dd picmicro ? a/d v ss microcontroller converter note: 3-pin sot-23b is equivalent to jedec to-236 v out v ss v dd 3-pin sot-23b (note) tc1047/1047a 1 2 3 precision temperature-to-voltage converter
tc1047/tc1047a ds21498c-page 2 ? 2005 microchip technology inc. 1.0 electrical characteristics absolute maximum ratings* supply voltage ......................................................+7v voltage on any pin with respect to supplies: ..................................................v ss -0.3 to v dd +0.3v operating temperature ......................-40c to +125c storage temperature range ..............-55c to +150c *stresses above those listed under "absolute maximum rat- ings" 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 specif ications is not implied. expo- sure to absolute maximum rating conditions for extended periods may affect device reliability. electrical characteristics temperature characteristics electrical specifications: unless otherwise indicated, these specifications apply for the entire supply voltage range and for t a = -40c to +125c. parameters sym min typ max units conditions supply voltage v dd 2.7 ? 4.4 v tc1047 2.5 ? 5.5 v tc1047a supply current, operating i q ?3560 a average slope of output voltage a v ? 10 ? mv/c temperature accuracy tmp acy -2 0.5 +2 c t a = 25c -3 0.5 +3 c t a = +125c ?1.0? ct a = -40c output voltage v out ?100? mvt a = -40c 730 750 770 mv t a = 25c 1720 1750 1780 mv t a = +125c output source and sink current i out 100 ? ? a electrical specifications: unless otherwise indicated, v dd = +2.3v to +5.5v and v ss = gnd. parameters sym min typ max units conditions temperature ranges specified temperature range t a -40 ? +85 c operating temperature range t a -40 ? +125 c note 1 storage temperature range t a -65 ? +150 c thermal package resistances thermal resistance, 3l-sot-23b ja ?336 ? c/w note 1: the tc1047/tc1047a operate over this extended temper ature range, but with reduced performance. in any case, the junction temperature (t j ) must not exceed the absolute maximum specification of +150c.
? 2005 microchip technology inc. ds21498c-page 3 tc1047/tc1047a 2.0 typical performance curves note: unless otherwise indicated, v dd = 2.7v thru 4.4v and t a = -40c to +125c. figure 2-1: temperature accuracy vs. temperature. figure 2-2: supply current vs. temperature. 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. ?3 ?2 ?1 0 1 2 3 ?40 ?25 ?10 5 20 35 50 65 80 95 110 125 v dd = 2.5v v dd = 5.5v temp accy ( c) temperature ( c) 0 10 20 30 40 50 -40 -25 -10 5 20 35 50 65 80 95 110 12 5 temp. ( c) i dd ( a) v dd = 5.5v v dd = 2.5v
tc1047/tc1047a ds21498c-page 4 ? 2005 microchip technology inc. 3.0 pin descriptions the descriptions of the pins are listed in table 3-1. table 3-1: pin function table 4.0 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 0c is 500 mv. figure 4-1: output voltage vs. temperature. pin no. symbol description 1v dd input supply voltage 2v out temperature sensor output terminal 3v ss ground terminal 1.75 1.7 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 v out (volts) temperature ( c) v out = (10 mv/ c) (temperature c) + 500 mv
? 2005 microchip technology inc. ds21498c-page 5 tc1047/tc1047a 5.0 package information 5.1 package marking information 1 & 2 = part number code + temperature range and voltage 3 = year and quarter code 4 = lot id number part number code tc1047 al tc1047a bl 3-pin sot-23b !"#$ legend: xx...x customer-specific information* y year code (last digit of calendar year) yy year code (last 2 digits of calendar year) ww week code (week of january 1 is week ?01?) nnn alphanumeric traceability code pb-free jedec designator for matte tin (sn) * this package is pb-free. the pb-free jedec designator ( ) can be found on the outer packaging for this package. note : 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. 3 e 3 e
tc1047/tc1047a ds21498c-page 6 ? 2005 microchip technology inc. 3-lead plastic small outline transistor (tt) (sot-23) 10 5 0 10 5 0 b mold draft angle bottom 10 5 0 10 5 0 a mold draft angle top 0.51 0.44 0.37 .020 .017 .015 b lead width 0.18 0.14 0.09 .007 .006 .004 c lead thickness 10 5 0 10 5 0 f foot angle 0.55 0.45 0.35 .022 .018 .014 l foot length 3.04 2.92 2.80 .120 .115 .110 d overall length 1.40 1.30 1.20 .055 .051 .047 e1 molded package width 2.64 2.37 2.10 .104 .093 .083 e overall width 0.10 0.06 0.01 .004 .002 .000 a1 standoff 1.02 0.95 0.88 .040 .037 .035 a2 molded package thickness 1.12 1.01 0.89 .044 .040 .035 a overall height 1.92 .076 p1 outside lead pitch (basic) 0.96 .038 p pitch 3 3 n number of pins max nom min max nom min dimension limits millimeters inches* units 2 1 p d b n e e1 l c b f a a2 a a1 p1 exceed .005" (0.127mm) per side. dimensions d and e1 do not include mold flash or protrusions. mold flash or protrusions shall not notes: jedec equivalent: to-236 drawing no. c04-104 revised 03-11-05 *controlling parameter
? 2005 microchip technology inc. ds21498c-page 7 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.
tc1047/tc1047a ds21498c-page 8 ? 2005 microchip technology inc. notes:
? 2005 microchip technology inc. ds21498c-page 9 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 . device: tc1047: precision temp-to-voltage converter tc1047xtr: precision temp-to-voltage converter (tape and reel) temperature range: v = -40c to +125c package: nb = plastic small outline transistor, sot-23b, 3-lead part no. x temperature device examples: a) tc1047vnbtr: precision temp-to-volt- age converter b) tc1047avnbtr: precision temp-to-volt- age converter range xx package
tc1047/tc1047a ds21498c-page 10 ? 2005 microchip technology inc. notes:
? 2005 microchip technology inc. ds21498c-page 11 information contained in this publication regarding device applications and the like is prov ided only for your convenience and may be superseded by updates. it is your responsibility to ensure that your application m eets with your specifications. microchip makes no representations or war- ranties 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, k ee l oq , micro id , 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, app lication 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 tec hnology incorporated in the u.s.a. and other countries. sqtp is a service mark of mi crochip 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. note the following details of the code protection feature on microchip devices: ? microchip products meet the specification cont ained 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 i n 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 produc ts in a manner outside the operating specif ications 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 semiconduc tor 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 co mmitted to continuously improvin g 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. 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, k ee l oq ? 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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