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? 2003 microchip technology inc. ds21434e-page 1 m TC54 features ? precise detection thresholds: standard 2.0%, custom 1.0% ? small packages: 3-pin sot-23a, 3-pin sot-89, to-92 and 5-pin sot-23a (7.7v only) ? low current drain: typ. 1 a ? wide detection range: 1.1v to 6.0v and 7.7v ? wide operating voltage range: 0.7v to 10v applications ? battery voltage monitoring ? microprocessor reset ? system brown-out protection ? switching circuit in battery backup ? level discriminator functional block diagram general description the TC54 series are cmos voltage detectors that are especially well suited for battery-powered applications because of their extremely low 1 a operating current and small surface-mount packaging. each part is laser-trimmed to the desired threshold voltage, which can be specified from 1.4v to 7.7v for a 2% tolerance, and 1.5v to 6.0v for a 1% tolerance. the device includes a comparator, low-current high- precision reference, laser-trimmed divider, hysteresis circuit and output driver. the TC54 is available with either an open-drain or complementary output stage. in operation, the TC54's output (v out ) remains in the logic-high state as long as v in is greater than the spec- ified threshold voltage (v det - ). when v in falls below v det- , the output is driven to a logic-low. v out remains low until v in rises above v det - by an amount v hyst , whereupon it resets to a logic-high. package types v out TC54vc only v ss 1 3 + ? v in 2 TC54vn has open-drain output. TC54vc has complementary output. v ref 1 3 2 v in v ss v out TC54 3-pin sot-89 5 5-pin sot-23a TC54 1 3 4 2 nc nc note: 3-pin sot-23a is equivalent to the eiaj sc-59 5-pin sot-23a is equivalent to the eiaj sc-74a. (7.7v only) 3-pin to-92 12 3 v ss v in v out v in v out v ss 3 12 TC54 3-pin sot-23a v in v in v ss v out v out v ss voltage detector
TC54 ds21434e-page 2 ? 2003 microchip technology inc. 1.0 electrical characteristics absolute maximum ratings ? input voltage ...................................................................+12v output current ..............................................................50 ma output voltage: cmos................(v ss ? 0.3v) to (v in + 0.3v) open-drain.....................(v ss ? 0.3v) to 12v power dissipation (t a 70c): 3-pin sot-23a .......................................................240 mw 3-pin sot-89..........................................................500 mw 5-pin sot-23a .......................................................240 mw 3-pin to-92 ............................................................300 mw operating temperature range........................-40c to +85c storage temperature range.........................-65c to +150c ? 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. pin function table dc characteristics symbol description v out digital output v in analog input v ss ground terminal nc no connect nc no connect electrical specifications: unless otherwise noted, t a = +25c. parameter sym min typ max units test conditions operating voltage v in 0.7 ? 10.0 v (v det -) = 0.8 to 6.0v quiescent current i ss ?0.82.7av in = 2.0v ?0.93.0 v in = 3.0v ?1.03.2 v in = 4.0v ?1.13.6 v in = 5.0v threshold voltage note 1 v det - 1.37 1.4 1.43 v TC54vx14 2.06 2.1 2.14 TC54vx21 2.65 2.7 2.75 TC54vx27 2.84 2.9 2.96 TC54vx29 2.94 3.0 3.06 TC54vx30 4.12 4.2 4.28 TC54vx42 4.21 4.3 4.39 TC54vx43 7.54 7.7 7.86 TC54vx77 (5-pin sot-23a only) hysteresis voltage v hyst 28 70 112 mv v det = 1.4v (typ) 42 105 168 v det = 2.1v (typ) 54 135 216 v det = 2.7v (typ) 58 145 232 v det = 2.9v (typ) 60 150 240 v det = 3.0v (typ) 84 210 336 v det = 4.2v (typ) 86 215 344 v det = 4.3v (typ) 154 385 616 v det = 7.7v (typ) output current i out ?7.7?mav ol = 0.5v, v in = 2.1v ?10.1? v in = 3.0v ?11.5? v in = 4.0v ?13.0? v in = 5.0v ?-10.0 ? TC54vc only: v oh = v in ? 2.1v, v in = 8.0v te m p c o o f ( v det -) t c (v det -) ? 100 ? ppm/c -40c t a 85c delay time t dly ??0.2msv det - v out inversion note 1: for other voltage options, please contact your regional microchip sales office.
? 2003 microchip technology inc. ds21434e-page 3 TC54 figure 1-1: timing diagram. v dd output v oh t dly v det- output
TC54 ds21434e-page 4 ? 2003 microchip technology inc. 2.0 pin descriptions the descriptions of the pins are listed in table 2-1. table 2-1: pin function table 2.1 digital output (v out ) v out goes low when v in drops below v det - and returns high when v in rises above v det - + v hyst . ( see figure 3-1, ?timing diagram?.) 2.2 analog input (v in ) v in can be used for power supply monitoring or a voltage level that requires monitoring. 2.3 ground terminal (v ss ) v ss provides the negative reference for the analog input voltage. typically, the circuit ground is used. 2.4 no connect (nc) no internal connection. pin no. (3-pin sot-23a) pin no. (3-pin sot-89) (3-pin to-92) pin no. (5-pin sot-23a) symbol description 111v out digital output 322v in analog input 233v ss ground terminal ? ? 4 nc no connect ? ? 5 nc no connect
? 2003 microchip technology inc. ds21434e-page 5 TC54 3.0 detailed description in normal steady-state operation when v in > v det- , the output will be at a logic-high (see figure 3-1). in the case of the TC54vn, this is an open-drain condi- tion. if and when the input falls below v det - , the output will pull down (logic 0 ) to v ss . generally, v out can pull down to within 0.5v of v ss at rated output current and input voltage. (see section 1.0, ?electrical characteristics?). the output (v out ) will stay valid until the input voltage falls below the minimum operating voltage (v inmin ) of 0.7v. below this minimum operating voltage, the output is undefined. during power-up (or anytime v in has fallen below v inmin ), v out will remain undefined until v in rises above v inmin . once this occurs, the output will become valid. v out will be in its active-low state, while v inmin < v in < v det+ (therefore, v det+ = v det- + v hyst ). if and when the input rises above v det + , the output will assume its inactive state (high for TC54vc, open-drain for TC54vn). figure 3-1: timing diagram. v in detect voltage v det - minimum operating voltage v hyst v det+ output voltage release voltage or reset voltage ground level ground level v out
TC54 ds21434e-page 6 ? 2003 microchip technology inc. 4.0 applications information 4.1 modifying the trip point, v det - although the TC54 has a pre-programmed v det -, it is sometimes necessary to make adjustments during pro- totyping. this can be accomplished by connecting an external resistor divider to a TC54, which has a v det - lower than that of v source (figure 4-1). to maintain detector accuracy, the bleeder current through the divider should be significantly higher than the 1 a operating current required by the TC54. a rea- sonable value for this bleeder current is 100 a (100 times the 1 a required by the TC54). for example, if v det - = 2v and the desired trip point is 2.5v, the value of r 1 + r 2 is 25 k ? (2.5v/100 a). the value of r 1 + r 2 can be rounded to the nearest standard value and plugged into the equation of figure 4-1 to calculate val- ues for r 1 and r 2 . 1% tolerance resistors are recommended. figure 4-1: modify trip-point of the TC54 using external resistor divider. 4.2 other applications low operating power and small physical size make the TC54 series ideal for many voltage detector applica- tions, such as those shown in figures 4-2, 4-3 and 4-4. figure 4-2 shows a low-voltage gate drive protection circuit that prevents overheating of the logic-level mosfet due to insufficient gate voltage. when the input signal is below the threshold of the TC54vn, its output grounds the gate of the mosfet. figure 4-3 and figure 4-4 show the TC54 in conventional voltage monitoring applications. figure 4-2: mosfet low drive protection. figure 4-3: battery voltage monitor. figure 4-4: power good monitor. where: vsource = voltage to be monitored (vdet-) = threshold voltage setting of TC54 note: in this example, v source must be greater than (v det- ) v source r 1 r 1 r 2 + ------------------- - v det - == TC54 v in v out v ss r 1 v source r 2 v in v out v ss TC54vx 270 ? mtp3055el v cc r l 4.3v v in v out v ss batlow TC54vx + ? ? v in v out v ss power good TC54vx + ? pwr sply
? 2003 microchip technology inc. ds21434e-page 7 TC54 5.0 packaging information 5.1 package marking information symbol output voltage bcmos1. ccmos2. dcmos3. ecmos4. fcmos5. hcmos6. icmos7. symbol output voltage lnch1. mnch2. nnch3. pnch4. rnch5. snch6. tnch7. symbol voltage symbol voltage 0.06.6 1.17.7 2.28.8 3.39.9 4.4 5.5 3-pin sot-23a 3-pin sot-89 1 1 2 2 4 3 4 3 1 represents output configuration (cmos or nch) and first integer of voltage ex: cmos 3.x = d 2 represents first decimal of output voltage (0-9) ex: cmos 3.x = d 4 4 3 represents assembly lot code & symbol output voltage tnch7. symbol voltage 0.0 1.1 2.2 3.3 4.4 5.5 6.6 7.7 8.8 9.9 5-pin sot-23a 1 2 4 3 1 represents output configuration and first integer of voltage 2 represents first decimal of output voltage 4 3 represents assembly lot code &
TC54 ds21434e-page 8 ? 2003 microchip technology inc. package marking information (continued) symbol output ccmos n n-channel symbol voltage 22. 33. 44. 55. 66. symbol voltage symbol voltage 0.05.5 1.16.6 2.27.7 3.38.8 4.49.9 symbol delay time 0no delay symbol accuracy 1 1.0% (custom) 2 2.0% (standard) 3-pin to-92 8 4 7 3 6 2 5 1 = 54x (fixed) 1 , 2 , & 3 4 represents output configuration (cmos or nch) ex: cmos 3.x = c 5 represents first integer of detect voltage 6 represents first decimal of detect voltage 7 represents the output delay time respresents the device accuracy 8
? 2003 microchip technology inc. ds21434e-page 9 TC54 3-lead plastic small outline transistor (cb) (sot23) 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
TC54 ds21434e-page 10 ? 2003 microchip technology inc. 3-lead plastic small outline transistor (mb) (sot89) 0.56 0.44 .022 .017 b lead 2 width 0.44 0.35 .017 .014 c lead thickness 1.83 1.62 .072 .064 d1 tab length 4.60 4.40 .181 .173 d overall length 2.29 2.13 .090 .084 e1 molded package width at top 4.25 3.94 .167 .155 h overall width 1.60 1.40 .063 .055 a overall height 3.00 bsc .118 bsc p1 outside lead pitch (basic) 1.50 bsc .059 bsc p pitch max min max min dimension limits millimeters* inches units 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-243 drawing no. c04-29 *controlling parameter foot length l .035 .047 0.89 1.20 leads 1 & 3 width b1 .014 .019 0.36 0.48 molded package width at base e .090 .102 2.29 2.60 d1 h l b1 b b1 p p1 e c a d 1 2 3 e1
? 2003 microchip technology inc. ds21434e-page 11 TC54 5-lead plastic small outline transistor (ct) (sot23) 10 5 0 10 5 0 mold draft angle bottom 10 5 0 10 5 0 mold draft angle top 0.50 0.43 0.35 .020 .017 .014 b lead width 0.20 0.15 0.09 .008 .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 3.10 2.95 2.80 .122 .116 .110 d overall length 1.75 1.63 1.50 .069 .064 .059 e1 molded package width 3.00 2.80 2.60 .118 .110 .102 e overall width 0.15 0.08 0.00 .006 .003 .000 a1 standoff 1.30 1.10 0.90 .051 .043 .035 a2 molded package thickness 1.45 1.18 0.90 .057 .046 .035 a overall height 1.90 .075 p1 outside lead pitch (basic) 0.95 .038 p pitch 5 5 n number of pins max nom min max nom min dimension limits millimeters inches* units 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: mo-178 drawing no. c04-091 significant characteristic
TC54 ds21434e-page 12 ? 2003 microchip technology inc. 3-lead plastic transistor outline (zb) (to-92) 4 3 2 4 3 2 mold draft angle bottom 6 5 4 6 5 4 0.56 0.48 0.41 .022 .019 .016 b lead width 0.51 0.43 0.36 .020 .017 .014 c lead thickness 2.41 2.29 2.16 .095 .090 .085 r molded package radius 4.95 4.64 4.32 .195 .183 .170 d overall length 4.95 4.71 4.45 .195 .186 .175 e1 overall width 3.94 3.62 3.30 .155 .143 .130 a bottom to package flat 1.27 .050 p pitch 3 3 n number of pins max nom min max nom min dimension limits millimeters inches* units r n 1 3 p l b a c 1 d 2 e1 tip to seating plane l .500 .555 .610 12.70 14.10 15.49 *controlling parameter mold draft angle top 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-92 drawing no. c04-101
? 2003 microchip technology inc. ds21434e-page 13 TC54 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: TC54v: voltage detector output configuration: n = nch open-drain c = cmos output detected voltage: 14 = 1.4v 21 = 2.1v 27 = 2.7v 29 = 2.9v 30 = 3.0v 42 = 4.2v 43 = 4.3v extra feature code: 0 = fixed tolerance: 1 = 1% (custom) 2 = 2% (standard) temperature: e = -40c to +85c package: cb = 3-pin sot-23a (equivalent to eiaj sc-59) mb = 3-pin sot-89 ct = 5-pin sot-23a (equivalent to eiaj sc-74a) (7.7v only) zb = transistor outline (to-92), 3-lead taping direction: 713 = standard taping part no. x xx pkg output config. device xx detected voltage x extra feature code x tolerance x temp. xx taping direction examples: a) TC54vc1402ecb713: 1.4v voltage detector, 2% tol., sot-23a-3-tr. b) TC54vc1402emb713: 1.4v voltage detector, 2% tol., sot-89-3-tr. c) TC54vc1402ezb: 1.4v voltage detec- tor, 2% tol., to-92. d) TC54vc2102ecb713: 2.1v voltage detector, 2% tolerance, sot-23a-3-tr. e) TC54vc2102emb713: 2.1v voltage detector, 2% tolerance, sot-89-3-tr. f) TC54vc2102ezb: 2.1v voltage detec- tor, 2% tolerance, to-92. g) TC54vc2702ecb713: 2.7v voltage detector, 2% tolerance, sot-23a-3-tr. h) TC54vc3002ecb713: 3.0v voltage detector, 2% tolerance, sot-23a-3-tr. i) TC54vn4202ecb713: 4.2v voltage detector, 2% tolerance, sot-23a-3-tr. j) TC54vn7702ect713: 7.7v voltage detector, 2% tolerance, sot-23a-3-tr. 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.
TC54 ds21434e-page 14 ? 2003 microchip technology inc. notes:
ds21434e-page 15 ? 2003 microchip technology inc. 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, k ee l oq , mplab, pic, picmicro, picstart, pro mate and powersmart are registered trademarks of microchip technology incorporated in the u.s.a. and other countries. filterlab, micro id , mxdev, mxlab, picmaster, seeval and the embedded control solutions company are registered trademarks of microchip technology incorporated in the u.s.a. accuron, application maestro, dspic, dspicdem, dspicdem.net, economonitor, fansense, flexrom, fuzzylab, in-circuit serial programming, icsp, icepic, microport, migratable memory, mpasm, mplib, mplink, mpsim, picc, pickit, picdem, picdem.net, powercal, powerinfo, powermate, powertool, rflab, rfpic, select mode, smartsensor, smartshunt, 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. ? 2003, 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 qs-9000 quality system certification for its worldwide headquarters, design and wafer fabrication facilities in chandler and tempe, arizona in july 1999 and mountain view, california in march 2002. the company?s quality system processes and procedures are qs-9000 compliant for its picmicro ? 8-bit mcus, k ee l oq ? code hopping devices, serial eeproms, microperipherals, non-volatile memory and analog products. in addition, microchip?s quality system for the design and manufacture of development systems is iso 9001 certified.
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