View TC1272AMVNBTR_7389700.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

? 2004 microchip technology inc. ds21877a-page 1 m tc1272a features ? precision v dd monitor ? 140 msec minimum reset , output duration ? output valid to v dd = 1.2v ?v dd transient immunity ? small 3-pin sot-23b package ? no external components applications ? computers ? embedded systems ? battery-powered equipment ? critical p power supply monitoring typical application circuit general description the tc1272a are cost-effective system supervisor circuits designed to monitor v dd in digital systems and provide a reset signal to the host processor, when necessary. no external components are required. the reset output is driven active within 65 sec (typ.) of v dd falling through the reset voltage threshold. reset is maintained active for a minimum of 140 msec after v dd rises above the reset threshold. the tc1272a has a complimentary output. the output of the tc1272a is valid down to v dd = 1.2v. the device is available in a 3-pin sot-23b package. the tc1272a device is optimized to reject fast transient glitches on the v dd line. package type tc1272a v dd v dd v dd reset reset input processor 1 2 3 gnd gnd v dd reset gnd tc1272a 1 2 3 note: 3-pin sot-23b is equivalent to 3-pin sot-23b* jedec to-236. 3-pin reset monitor
tc1272a ds21877a-page 2 ? 2004 microchip technology inc. 1.0 electrical characteristics absolute maximum ratings? supply voltage (v dd to gnd) ..........................................6.0v reset .................................................. ?0.3v to (v dd +0.3v) input current, v dd .........................................................20 ma output current, reset ................................................20 ma dv/dt (v dd )............................................................. 100v/sec operating temperature range..................... ?40c to +125c power dissipation (t a = 70c): 3-pin sot-23b (derate 4 mw/c above +70c) ....320 mw storage temperature range........................ ?65c to +150c maximum junction temperature, t j .............................. 150c ? notice: stresses above those listed under ?maximum ratings? may cause permanent damage to the device. this is a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operational listings of this specification is not implied. expo- sure to maximum rating conditions for extended periods may affect device reliability. pin function table name function gnd ground reset reset push-pull output remains low while v dd is below the reset voltage threshold and for 140 msec (min.) after v dd rises above reset threshold v dd electrical characteristics v dd = full range, t a = operating temperature range, unless otherwise noted. typical values are at t a = +25c, v dd = 5v for l/m/j, 3.3v for t/s, 3.0v for r and 2.5v for z (note 1) . parameter sym min typ max units test conditions v dd range 1.0 ? 5.5 v t a = 0c to +70c 1.2 ? 5.5 t a = ? 40c to +125c supply current i cc ?1230a tc1272a l/m/j: v dd < 5.5v ?925 tc1272a r/s/t/z: v dd < 3.6v reset threshold (note 2) v th 4.56 4.63 4.70 v tc1272a l: t a = +25c 4.50 ? 4.75 t a = ? 40c to +125c 4.31 4.38 4.45 v tc1272a m: t a = +25c 4.25 ? 4.50 v t a = ? 40c to +125c 3.93 4.00 4.06 v tc1272a j: t a = +25c 3.89 ? 4.10 v t a = ? 40c to +125c 3.04 3.08 3.11 v tc1272a t: t a = +25c 3.00 ? 3.15 v t a = ? 40c to +125c 2.89 2.93 2.96 v tc1272a s: t a = +25c 2.85 ? 3.00 v t a = ? 40c to +125c 2.59 2.63 2.66 v tc1272a r: t a = +25c 2.55 ? 2.70 v t a = ? 40c to +125c 2.28 2.32 2.35 v tc1272a z: t a = +25c 2.25 ? 2.38 v t a = ? 40c to +125c reset threshold tempco ? 30 ? ppm/c v dd to reset delay, ? 65 ? sec v dd = v th to (v th ? 100 mv) (note 2) reset active time out period 140 320 560 msec reset output voltage low v ol ??0.3v tc1272a r/s/t/z: v dd = v th min, i sink = 1.2 ma ??0.4 tc1272a l/m/j: v dd = v th min, i sink = 3.2 ma ??0.3 v dd > 1.0v, i sink = 50 a reset output voltage high v oh 0.8 v dd ??v tc1272a r/s/t/z: v dd > v th max, i source = 500 a v dd ? 1.5 ? ? tc1272a l/m/j: v dd > v th max, i source = 800 a note 1: production testing done at t a = +25c, overtemperature limits ensured by qc screen. 2: reset output for tc1272a .
? 2004 microchip technology inc. ds21877a-page 3 tc1272a 2.0 typical performance characteristics figure 2-1: supply current vs. temperature. figure 2-2: supply current vs. temperature. figure 2-3: power-up reset time out vs. temperature. figure 2-4: normalized reset threshold 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. 0 2 4 6 8 10 12 14 16 18 -40-200 20406080100120 temperature (c) supply current ( a) v dd = 1v v dd = 3v v dd = 5v tc1272a/r/s/t/z, no load 0 2 4 6 8 10 12 14 16 -40-20 0 20406080100120 temperature (c) supply current ( a) v dd = 5v v dd = 3v v dd = 1v tc1272a/l/m/j, no load 0 50 100 150 200 250 300 350 400 450 -40-200 20406080100120 temperature (c) power-up reset timeout (sec) 0.997 0.998 0.999 1 1.001 -40-20 0 20406080100120 temperature (c) normalized reset threshold
tc1272a ds21877a-page 4 ? 2004 microchip technology inc. 3.0 applications information 3.1 v dd transient rejection the tc1272a provides accurate v dd monitoring and reset timing during power-up, power-down and brown- out/sag conditions. these devices also reject negative- going transients (glitches) on the power supply line. figure 3-1 shows the maximum transient duration vs. maximum negative excursion (overdrive) for glitch rejection. any combination of duration and overdrive that lies under the curve will not generate a reset signal. figure 3-1: maximum transient duration vs. overdrive for glitch rejection at +25c. combinations above the curve are detected as a brown-out or power-down condition. transient immu- nity can be improved by adding a capacitor in close proximity to the v dd pin of the tc1272a. 3.2 reset signal integrity during power-down the tc1272a reset output is valid to v dd = 1.0v. below this voltage, the output becomes an "open cir- cuit" and does not sink current. this means cmos logic inputs to the microcontroller will be floating at an undetermined voltage. most digital systems are com- pletely shut down well above this voltage. however, in situations where reset must be maintained valid to v dd = 0v, a pull-down resistor must be connected from reset to ground to discharge stray capacitances and hold the output low (figure 3-2). this resistor value, though not critical, should be chosen such that it does not appreciably load reset under normal operation (100 k ? will be suitable for most applications). figure 3-2: the addition of r 1 at the reset output of the tc1272a ensures that the reset output is valid to v dd = 0v. reset comparator overdrive [v th - v dd ] (mv) 400 240 160 320 80 0 1 5 100 1000 t a = +25c v th duration overdrive v dd tc1272a /l/m/j maximum transient duration (sec) tc1272a /z/r/s/t [v th - v dd ] (mv) 30 40 50 60 70 80 90 100 110 120 130 1 10 100 1000 reset comparator overdrive (mv) v dd to reset delay ( sec) tc1272a /l/m/j tc1272a /z/r/s/t tc1272a v dd v dd r 1 100 k ? reset gnd
? 2004 microchip technology inc. ds21877a-page 5 tc1272a 3.3 controllers and processors with bidirectional i/o pins some microcontrollers have bidirectional reset pins. depending on the current drive capability of the controller pin, an indeterminate logic level may result if there is a logic conflict. this can be avoided by adding a 4.7 k ? resistor in series with the output of the tc1272a (figure 3-3). if there are other components in the system that require a reset signal, they should be buffered so as not to load the reset line. if the other components are required to follow the reset i/o of the microcontroller, the buffer should be connected as shown with the solid line. figure 3-3: interfacing the tc1272a to a bidirectional reset i/o. tc1272a v dd reset gnd reset gnd buffered reset to other system components 4.7 k ? buffer micro- tc1272a reset gnd reset gnd buffered reset to other system components picmicro ? 4.7 k ? buffer mcu
tc1272a ds21877a-page 6 ? 2004 microchip technology inc. 4.0 packaging information 4.1 package marking information part number sot-23 tc1272a zvnbtr ba tc1272a rvnbtr bb tc1272a svnbtr bc tc1272a tvnbtr bd tc1272a jvnbtr be tc1272a mvnbtr bf tc1272a lvnbtr bg legend: 1 part number + temperature range and voltage (two-digit code) 2 part number + temperature range and voltage (two-digit code) 3 lot id number 4 year and work week 5 year and work week 6 year and work week 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-pin sot-23b cdef
? 2004 microchip technology inc. ds21877a-page 7 tc1272a 3-lead plastic small outline transistor (nb) (sot-23) 10 5 0 10 5 0 mold draft angle bottom 10 5 0 10 5 0 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 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 a2 a a1 p1 * controlling parameter notes: dimensions d and e1 do not include mold flash or protrusions. mold flash or protrusions shall not exceed .010? (0.254mm) per side. jedec equivalent: to-236 drawing no. c04-104 significant characteristic
tc1272a ds21877a-page 8 ? 2004 microchip technology inc. 4.2 product tape and reel specifications figure 4-1: embossed carrier dimensions (8, 12, 16, and 24 mm tape only) figure 4-2: 3-lead sot-23 device tape and reel specifications to p cover ta pe k 0 p w b 0 a 0 table 1: carrier tape/cavity dimensions case outline package type carrier dimensions cavity dimensions output quantity units reel diameter in mm w mm p mm a0 mm b0 mm k0 mm nb sot-23 3l 8 4 3.15 2.77 1.22 3000 180 user direction of feed p, pitch standard reel component orientation reverse reel component orientation w, width of carrier tape pin 1 pin 1 device marking device marking
? 2004 microchip technology inc. ds21877a-page 9 tc1272a product identification system to order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office . sales and support device: tc1272a: supervisor circuit with active-low reset output v dd reset threshold: l = 4.63v m = 4.38v j = 4.00v t = 3.08v s = 2.93v r = 2.63v z = 2.32v temperature range: v = -40c to +125c package: nbtr = sot-23b, 3-pin (tape and reel) part no. x x temperature v dd reset device examples: a) tc1272azvnb tr: supervisor w/2.32 v dd option. b) tc1272arvnb tr: supervisor w/2.63 v dd option. c) tc1272asvnb tr: supervisor w/2.93 v dd option. d) tc1272atvnb tr: supervisor w/3.08 v dd option. e) tc1272ajvnb tr: supervisor w/4.00 v dd option. f) tc1272amvnb tr: supervisor w/4.38 v dd option. g) tc1272alvnb tr: supervisor w/4.63 v dd option. range threshold x xxxx package 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. your local microchip sales office 2. the microchip corporate literature center u.s. fax: (480) 792-7277 3. the microchip worldwide site (www.microchip.com) please specify which device, revision of silicon and data sheet (include literature #) you are using. customer notification system register on our web site (www.microchip.com/cn) to receive the most current information on our products.
tc1272a ds21877a-page 10 ? 2004 microchip technology inc. notes:
? 2004 microchip technology inc. ds21877a-page 11 information contained in this publication regarding device applications and the like is intended through suggestion only and may be superseded by updates. it is your responsibility to ensure that your application meets with your specifications. no representation or warranty is given and no liability is assumed by microchip technology incorporated with respect to the accuracy or use of such information, or infringement of patents or other intellectual property rights arising from such use or otherwise. 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 intellectual property rights. trademarks the microchip name and logo, the microchip logo, accuron, dspic, k ee l oq , mplab, pic, picmicro, picstart, pro mate, powersmart and rfpic are registered trademarks of microchip technology incorporated in the u.s.a. and other countries. amplab, filterlab, micro id , mxdev, mxlab, picmaster, seeval, smartshunt and the embedded control solutions company are registered trademarks of microchip technology incorporated in the u.s.a. application maestro, dspicdem, dspicdem.net, dspicworks, ecan, economonitor, fansense, flexrom, fuzzylab, in-circuit serial programming, icsp, icepic, migratable memory, mpasm, mplib, mplink, mpsim, pickit, picdem, picdem.net, pictail, powercal, powerinfo, powermate, powertool, rflab, select mode, smartsensor, smarttel and total endurance are trademarks of microchip technology incorporated in the u.s.a. and other countries. serialized quick turn programming (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. ? 2004, 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 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 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 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. 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.
ds21877a-page 12 ? 2004 microchip technology inc. m americas corporate office 2355 west chandler blvd. chandler, az 85224-6199 tel: 480-792-7200 fax: 480-792-7277 technical support: 480-792-7627 web address: http://www.microchip.com atlanta 3780 mansell road, suite 130 alpharetta, ga 30022 tel: 770-640-0034 fax: 770-640-0307 boston 2 lan drive, suite 120 westford, ma 01886 tel: 978-692-3848 fax: 978-692-3821 chicago 333 pierce road, suite 180 itasca, il 60143 tel: 630-285-0071 fax: 630-285-0075 dallas 4570 westgrove drive, suite 160 addison, tx 75001 tel: 972-818-7423 fax: 972-818-2924 detroit tri-atria office building 32255 northwestern highway, suite 190 farmington hills, mi 48334 tel: 248-538-2250 fax: 248-538-2260 kokomo 2767 s. albright road kokomo, in 46902 tel: 765-864-8360 fax: 765-864-8387 los angeles 18201 von karman, suite 1090 irvine, ca 92612 tel: 949-263-1888 fax: 949-263-1338 san jose 1300 terra bella avenue mountain view, ca 94043 tel: 650-215-1444 fax: 650-961-0286 toronto 6285 northam drive, suite 108 mississauga, ontario l4v 1x5, canada tel: 905-673-0699 fax: 905-673-6509 asia/pacific australia suite 22, 41 rawson street epping 2121, nsw australia tel: 61-2-9868-6733 fax: 61-2-9868-6755 china - beijing unit 706b wan tai bei hai bldg. no. 6 chaoyangmen bei str. beijing, 100027, china tel: 86-10-85282100 fax: 86-10-85282104 china - chengdu rm. 2401-2402, 24th floor, ming xing financial tower no. 88 tidu street chengdu 610016, china tel: 86-28-86766200 fax: 86-28-86766599 china - fuzhou unit 28f, world trade plaza no. 71 wusi road fuzhou 350001, china tel: 86-591-7503506 fax: 86-591-7503521 china - hong kong sar unit 901-6, tower 2, metroplaza 223 hing fong road kwai fong, n.t., hong kong tel: 852-2401-1200 fax: 852-2401-3431 china - shanghai room 701, bldg. b far east international plaza no. 317 xian xia road shanghai, 200051 tel: 86-21-6275-5700 fax: 86-21-6275-5060 china - shenzhen rm. 1812, 18/f, building a, united plaza no. 5022 binhe road, futian district shenzhen 518033, china tel: 86-755-82901380 fax: 86-755-8295-1393 china - shunde room 401, hongjian building, no. 2 fengxiangnan road, ronggui town, shunde district, foshan city, guangdong 528303, china tel: 86-757-28395507 fax: 86-757-28395571 china - qingdao rm. b505a, fullhope plaza, no. 12 hong kong central rd. qingdao 266071, china tel: 86-532-5027355 fax: 86-532-5027205 india divyasree chambers 1 floor, wing a (a3/a4) no. 11, o?shaugnessey road bangalore, 560 025, india tel: 91-80-22290061 fax: 91-80-22290062 japan benex s-1 6f 3-18-20, shinyokohama kohoku-ku, yokohama-shi kanagawa, 222-0033, japan tel: 81-45-471- 6166 fax: 81-45-471-6122 korea 168-1, youngbo bldg. 3 floor samsung-dong, kangnam-ku seoul, korea 135-882 tel: 82-2-554-7200 fax: 82-2-558-5932 or 82-2-558-5934 singapore 200 middle road #07-02 prime centre singapore, 188980 tel: 65-6334-8870 fax: 65-6334-8850 taiwan kaohsiung branch 30f - 1 no. 8 min chuan 2nd road kaohsiung 806, taiwan tel: 886-7-536-4818 fax: 886-7-536-4803 taiwan taiwan branch 11f-3, no. 207 tung hua north road taipei, 105, taiwan tel: 886-2-2717-7175 fax: 886-2-2545-0139 europe austria durisolstrasse 2 a-4600 wels austria tel: 43-7242-2244-399 fax: 43-7242-2244-393 denmark regus business centre lautrup hoj 1-3 ballerup dk-2750 denmark tel: 45-4420-9895 fax: 45-4420-9910 france parc d?activite du moulin de massy 43 rue du saule trapu batiment a - ler etage 91300 massy, france tel: 33-1-69-53-63-20 fax: 33-1-69-30-90-79 germany steinheilstrasse 10 d-85737 ismaning, germany tel: 49-89-627-144-0 fax: 49-89-627-144-44 italy via quasimodo, 12 20025 legnano (mi) milan, italy tel: 39-0331-742611 fax: 39-0331-466781 netherlands p. a. de biesbosch 14 nl-5152 sc drunen, netherlands tel: 31-416-690399 fax: 31-416-690340 united kingdom 505 eskdale road winnersh triangle wokingham berkshire, england rg41 5tu tel: 44-118-921-5869 fax: 44-118-921-5820 02/17/04 w orldwide s ales and s ervice

▲Up To Search▲

Price & Availability of TC1272AMVNBTR

	To Download TC1272AMVNBTR Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .