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this is information on a product in full production. december 2012 doc id 4467 rev 11 1/21 21 tl431 tl432 programmable voltage reference datasheet ? production data features adjustable output voltage: 2.5 to 36 v sink current capability: 1 to 100 ma typical output impedance: 0.22 1% and 2% voltage precision automotive temp. range - 40 c to +125 c applications power supply industrial automotive description the tl431 and tl432 are programmable shunt voltage references with guaranteed temperature stability over the entire operating temperature range. the device temperature range is extended for the automotive version from -40 c up to +125 c. the output voltage can be set to any value between 2.5 and 36 v with two external resistors. the tl431 and tl432 operate with a wide current range from 1 to 100 ma with a typical dynamic impedance of 0.22 . d so-8 (batwing plastic micropackage) z to-92 (plastic package) l sot23-3 l sot23-5 c sot323-6 www.st.com
contents tl431, tl432 2/21 doc id 4467 rev 11 contents 1 schematic diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 absolute maximum ratings and operating conditions . . . . . . . . . . . . . 4 3 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.1 reference input voltage deviation over temperature range . . . . . . . . . . . . 7 4 package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 4.1 so-8 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 4.2 to-92 ammopack and tape and reel package information . . . . . . . . . . . 13 4.3 to-92 (bulk) package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 4.4 sot23-3 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 4.5 sot23-5 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 4.6 sot323-6 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 5 ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 6 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
tl431, tl432 schematic diagrams doc id 4467 rev 11 3/21 1 schematic diagrams figure 1. to-92 pin connections (top view) figure 2. so-8 batwing pin connections (top view) figure 3. sot23-5 and sot23-3 pin connections (top view) figure 4. sot323-6 pin connections (top view) figure 5. tl431 and tl432 block diagram so8 anode cathode ref 1 2 3 7 8 4 6 nc 5 anode nc sot23-3 sot23-5 nc nc cathode ref anode 1 2 34 5 cathode ref anode 1 23 tl431 tl431 tl432 anode cathode vref ref
absolute maximum ratings and operating conditions tl431, tl432 4/21 doc id 4467 rev 11 2 absolute maximum ratings and operating conditions table 1. absolute maximum ratings symbol parameter value unit v ka cathode to anode voltage 37 v i k continuous cathode current range -100 to +150 ma i ref reference input current range -0.05 to +10 ma r thja thermal resistance junction to ambient (1) to-92 so-8 batwing sot23-3l sot23-5l sot323-6l 1. short-circuits can cause excessive heating. these values are typical. 200 85 248 157 221 c/w r thjc thermal resistance junction to case (1) so-8 batwing sot23-3l sot23-5l sot323-6l 30 136 67 110 c/w t stg storage temperature range -65 to +150 c t j junction temperature 150 c esd tl431iy, tl431aiy-t: hbm (human body model) (2) tl431-tl432: hbm (human body model) mm: machine model (3) cdm: charged device model (4) 2. human body model: a 100 pf capacit or is charged to the specified voltage, then discharged through a 1.5 k resistor between two pins of the device. this is done for all couples of connected pin combinations while the other pins are floating. 3. machine model: a 200 pf capacitor is charged to t he specified voltage, then discharged directly between two pins of the device with no external series resistor (internal resistor < 5 ). this is done for all couples of connected pin combinations while the other pins are floating. 4. charged device model: all pins and the package ar e charged together to the specified voltage and then discharged directly to the ground through onl y one pin. this is done for all pins. 3000 2000 200 1500 v table 2. operating conditions symbol parameter value unit v ka cathode to anode voltage v ref to 36 v i k cathode current 1 to 100 ma t oper operating free-air temperature range tl431c/ac tl431i/ai - tl432i/ai tl431iy/aiy 0 to +70 -40 to +105 -40 to +125 c
tl431, tl432 electrical characteristics doc id 4467 rev 11 5/21 3 electrical characteristics table 3. tl431c (t amb = 25 c unless otherwise specified) symbol parameter tl431c tl431ac unit min. typ. max. min. typ. max. v ref reference input voltage v ka = v ref , i k = 10 ma, t amb =25c t min t amb t max 2.44 2.423 2.495 2.55 2.567 2.47 2.453 2.495 2.52 2.537 v v ref reference input voltage deviation over temperature range (1) v ka = v ref , i k = 10 ma, t min t amb t max 317 315 mv ratio of change in reference input voltage to change in cathode to anode voltage i k = 10 ma - v ka = 10 v to v ref v ka = 36 v to 10 v -2.7 -2 -1.4 -1 -2.7 -2 -1.4 -1 mv/v i ref reference input current i k = 10 ma, r1 = 10 k , r2 = t amb = 25 c t min t amb t max 1.8 4 5.2 1.8 4 5.2 a i ref reference input current deviation over temperature range i k = 10 ma, r1 = 10 k , r2 = t min t amb t max 0.4 1.2 0.4 1.2 a i min minimum cathode current for regulation v ka = v ref 0.5 1 0.5 0.6 ma i off off-state cathode current 2.6 1000 2.6 1000 na ? zka ? dynamic impedance (2) v ka = v ref , i k = 1 to 100 ma, f 1 khz 0.22 0.5 0.22 0.5 1. see definition of section 3.1: reference input voltage deviation over temperature range . 2. the dynamic impedance is defined as | zka | = vref vka ------------ v ka i k --------------- -
electrical characteristics tl431, tl432 6/21 doc id 4467 rev 11 table 4. tl431i/tl432i (t amb = 25c unless otherwise specified) symbol parameter tl431i/tl432i tl431ai/tl432ai unit min. typ. max. min. typ. max. v ref reference input voltage v ka = v ref , i k = 10 ma, t amb = 25 c t min t amb t max 2.44 2.41 2.495 2.55 2.58 2.47 2.44 2.495 2.52 2.55 v v ref reference input voltage deviation over temperature range (1) v ka = v ref , i k =10 ma, t min t amb t max 730 730mv ratio of change in reference input voltage to change in cathode to anode voltage i k = 10 ma, v ka = 10 v to v ref v ka = 36 v to 10 v -2.7 -2 -1.4 -1 -2.7 -2 -1.4 -1 mv/v i ref reference input current i k = 10 ma, r1 = 10 k , r2 = t amb = 25 c t min t amb t max 1.8 4 6.5 1.8 4 6.5 a i ref reference input current deviation over temperature range i k = 10 ma, r1 = 10 k , r2 = t min t amb t max 0.8 2.5 0.8 1.2 a i min minimum cathode current for regulation v ka = v ref 0.5 1 0.5 0.7 ma i off off-state cathode current 2.6 1000 2.6 1000 na ? zka ? dynamic impedance (2) v ka = v ref , i k = 1 to 100 ma, f 1khz 0.22 0.5 0.22 0.5 1. see definition of section 3.1: reference input voltage deviation over temperature range below. 2. the dynamic impedance is defined as | zka | = vref vka ------------ v ka i k --------------- -
tl431, tl432 electrical characteristics doc id 4467 rev 11 7/21 3.1 reference input voltage deviation over temperature range v ref is defined as the difference between the maximum and minimum values obtained over the full temperature range. v ref = v ref max - v ref min figure 6. reference input voltage deviation over temperature range table 5. tl431iy (t amb = 25c unless otherwise specified) symbol parameter tl431iy tl431aiy unit min. typ. max. min. typ. max. v ref reference input voltage v ka = v ref , i k = 10 ma t min t amb t max 2.44 2.41 2.495 2.55 2.58 2.47 2.44 2.495 2.52 2.55 v v ref reference input voltage deviation over temperature range (1) v ka = v ref , i k = 10 ma, t min t amb t max 730 730mv ratio of change in reference input voltage to change in cathode to anode voltage i k = 10 ma, v ka = 10 v to v ref i k = 10 ma, v ka = 36 v to 10 v -2.7 -2 -1.4 -1 -2.7 -2 -1.4 -1 mv/v i ref reference input current i k = 10 ma, r1 = 10 k , r2 = t min t amb t max 1.8 4 6.5 1.8 4 6.5 a i ref reference input current deviation over temperature range i k = 10 ma, r1 = 10 k , r2 = , t min t amb t max 0.8 2.5 0.8 1.2 a i min minimum cathode current for regulation v ka = v ref 0.5 1 0.5 0.6 ma i off off-state cathode current t min t amb t max 2.6 1000 3000 2.6 1000 3000 na ? zka ? dynamic impedance (2) v ka = v ref , i k = 1 to 100 ma, f 1khz 0.22 0.5 0.22 0.5 1. see definition of section 3.1: reference input voltage deviation over temperature range below. 2. the dynamic impedance is defined as | zka | = vref vka ------------ v ka i k --------------- -
electrical characteristics tl431, tl432 8/21 doc id 4467 rev 11 figure 7. test circuit for v ka = v ref figure 8. test circuit for programming mode input v ka v ref i k =10ma output r v ka = v ref + r1 x i ref 1 r1 r2 ------ - + () input v ka v ref i k r1 r2 i ref r output figure 9. test circuit for i off figure 10. test circuit for phase margin and voltage gain v ka =36v i off input v ref i k =10ma output 10 f 10 f 15k 8.25k figure 11. test circuit for response time figure 12. reference voltage vs. temperature i k =1ma output 0 ma 1 ma -40 -20 0 20 40 60 80 100 120 2.44 2.46 2.48 2.50 2.52 2.54 v ka = v ref i k = 10 ma cathode voltage v ka (v) temperature ( c)
tl431, tl432 electrical characteristics doc id 4467 rev 11 9/21 figure 13. reference voltage vs. cathode current figure 14. zoom on reference voltage vs. cathode current figure 15. reference current vs. temperature figure 16. off-state cathode current vs. temperature -40-20 0 20406080100120 0.0 0.5 1.0 1.5 2.0 i k =10 ma r 1 =10k r2= + reference current i ref ( a) temperature c -40-20 0 20406080100120 0.0 0.1 0.2 0.3 0.4 v ka = 36 v v ref = 0 v off-state current i off ( a) temperature ( c) figure 17. ratio of change in v ref to change in v ka vs. temperature figure 18. static impedance r ka vs. temperature -40 -20 0 20 40 60 80 100 120 -2.0 -1.5 -1.0 -0.5 0.0 i k = 10 ma v ref / v ka (mv / v) temperature ( c) -40 -20 0 20 40 60 80 100 120 0.10 0.12 0.14 0.16 0.18 0.20 v ka =v ref static impedance r ka ( ) temperature ( c)
electrical characteristics tl431, tl432 10/21 doc id 4467 rev 11 figure 19. minimum operating current vs. temperature figure 20. gain and phase vs. frequency -40 -20 0 20 40 60 80 100 120 0.0 0.2 0.4 0.6 v ka = v ref minimum cathode current i min (ma) temperature ( c) figure 21. stability behavior with capacitive loads figure 22. maximum power dissipation figure 23. pulse response for i k = 1 ma
tl431, tl432 package mechanical data doc id 4467 rev 11 11/21 4 package mechanical data in order to meet environmental requirements, st offers these devices in different grades of ecopack ? packages, depending on their level of environmental compliance. ecopack ? specifications, grade definitions and product status are available at: www.st.com . ecopack ? is an st trademark.
package mechanical data tl431, tl432 12/21 doc id 4467 rev 11 4.1 so-8 package information figure 24. so-8 package mechanical drawing table 6. so-8 package mechanical data ref. dimensions millimeters inches min. typ. max. min. typ. max. a 1.75 0.069 a1 0.10 0.25 0.004 0.010 a2 1.25 0.049 b 0.28 0.48 0.011 0.019 c 0.17 0.23 0.007 0.010 d 4.80 4.90 5.00 0.189 0.193 0.197 e 5.80 6.00 6.20 0.228 0.236 0.244 e1 3.80 3.90 4.00 0.150 0.154 0.157 e 1.27 0.050 h 0.25 0.50 0.010 0.020 l 0.40 1.27 0.016 0.050 l1 1.04 0.040 k0808 ccc 0.10 0.004
tl431, tl432 package mechanical data doc id 4467 rev 11 13/21 4.2 to-92 ammopack and tape and reel package information figure 25. to-92 ammopack and tape and reel package mechanical drawing table 7. to-92 ammopack and tape and reel package mechanical data dim. millimeters inches min. typ. max. min. typ. max. a1 5.0 0.197 a5.00.197 t4.00.157 d 0.45 0.018 i1 2.5 0.098 p 11.7 12.7 13.7 0.461 0.500 0.539 po 12.4 12.7 13 0.488 0.500 0.512 p2 5.95 6.35 6.75 0.234 0.250 0.266 f1/f2 2.4 2.5 2.8 0.094 0.098 0.110 h -1 0 1 -0.039 0 0.039 p -1 0 1 -0.039 0 0.039 w 17.5 18.0 19.0 0.689 0.709 0.748 w0 5.7 6 6.3 0.224 0.236 0.248 w1 8.5 9 9.75 0.335 0.354 0.384 w2 0.5 0.020 h200.787 h0 15.5 16 16.5 0.610 0.630 0.650 h1 25 0.984 do 3.8 4.0 4.2 0.150 0.157 0.165 l1 11 0.433
package mechanical data tl431, tl432 14/21 doc id 4467 rev 11 4.3 to-92 (bulk) package information figure 26. to-92 bulk package mechanical drawing table 8. to-92 bulk package mechanical data dim. millimeters inches min. typ. max. min. typ. max. a 1.35 0.053 b 4.70 0.185 c 2.54 0.100 d 4.40 0.173 e 12.70 0.500 f 3.70 0.146 a 0.5 0.019 0067407_h
tl431, tl432 package mechanical data doc id 4467 rev 11 15/21 4.4 sot23-3 package information figure 27. sot23-3 package mechanical drawing table 9. sot23-3 package mechanical data dimensions ref. millimeters inches min. typ. max. min. typ. max. a 0.89 1.12 0.035 0.044 a1 0.01 0.10 0.0004 0.004 a2 0.88 0.95 1.02 0.035 0.037 0.040 b 0.30 0.50 0.012 0.020 c 0.08 0.20 0.003 0.008 d 2.80 2.90 3.04 0.110 0.114 0.120 e 2.10 2.64 0.083 0.104 e1 1.20 1.30 1.40 0.047 0.051 0.055 e 0.95 0.037 e1 1.90 0.075 l 0.40 0.50 0.60 0.016 0.020 0.024 l1 0.54 0.021 k0d 8d
package mechanical data tl431, tl432 16/21 doc id 4467 rev 11 4.5 sot23-5 package information figure 28. sot23-5 package mechanical drawing table 10. sot23-5 package mechanical data ref. dimensions millimeters inches min. typ. max. min. typ. max. a 0.90 1.45 0.035 0.057 a1 0.15 0.006 a2 0.90 1.30 0.035 0.051 b 0.35 0.50 0.014 0.020 c 0.09 0.20 0.004 0.008 d 2.80 3.05 0.110 0.120 e 1.50 1.75 0.059 0.069 e 0.95 0.037 h 2.60 3.00 0.102 0.118 l 0.10 0.60 0.004 0.024 0 degrees 10 degrees 7049676_i
tl431, tl432 package mechanical data doc id 4467 rev 11 17/21 4.6 sot323-6 package information figure 29. sot323-6 package mechanical drawing table 11. sot323-6 package mechanical data ref. dimensions millimeters inches min. typ. max. min. typ. max. a 0.80 1.10 0.031 0.043 a1 0 0.10 0.004 a2 0.80 1.00 0.031 0.039 b 0.15 0.30 0.006 0.012 c 0.10 0.18 0.004 0.007 d 1.80 2.20 0.071 0.087 e 1.15 1.35 0.045 0.053 e 0.65 0.026 he 1.80 2.40 0.071 0.094 l 0.10 0.40 0.004 0.016 q1 0.10 0.40 0.004 0.016 7095021_e
ordering information tl431, tl432 18/21 doc id 4467 rev 11 5 ordering information table 12. order codes order code accuracy (%) temperature range package packing marking tl431cd tl431cdt 2 0c to +70c so-8 tube or tape and reel 431c tl431acd tl431acdt 1431ac tl431cz tl431czt tl431cz-ap 2 to-92 bulk or tape or ammopack tl431c tl431acz tl431aczt tl431acz-ap 1 tl431ac tl431cl3t 2 sot23-3 ta p e l19 tl431acl3t 1 l18 tl431cl5t 2 sot23-5 l19 tl431acl5t 1 l18 tl431cct 2 sot323-6 31c tl431acct 1 31c tl431id tl431idt 2 -40c to + 105c so-8 tube or tape and reel 431i tl431aid tl431aidt 1 431ai tl431iz tl431izt tl431iz-ap 2 to-92 bulk or tape or ammopack tl431i tl431aiz tl431aizt tl431aiz-ap 1 tl431ai tl431il3t 2 sot23-3 ta p e l17 TL431AIL3T 1 l16 tl432il3t 2 sot23-3 32i tl432ail3t 1 32ai tl431il5t 2 sot23-5 l17 tl431ail5t 1 l16 tl431ict 2 sot323-6 31i tl431aict 1 31i
tl431, tl432 ordering information doc id 4467 rev 11 19/21 tl431iyd (1) tl431iydt (1) 2 -40c to + 125c so-8 (automotive grade level) tube or tape and reel 431iy tl431aiyd (1) tl431aiydt (1) 1 431aiy 1. qualification and characterization according to aec q100 and q003 or equivalent, advanced screening according to aec q001 & q 002 or equivalent. table 12. order codes (continued) order code accuracy (%) temperature range package packing marking
revision history tl431, tl432 20/21 doc id 4467 rev 11 6 revision history table 13. document revision history date revision changes 01-mar-2002 1 initial release. 01-nov-2005 2 ppap references inserted in order codes table on cover page. 13-dec-2006 3 corrected to-92 package information. 08-jun-2007 4 specified that so-8 package is batwing package. in electrical characteristics tables, moved negative values from max column to min column. corrected captions of figure 7 and of figure 18 . added footnote to table 8: to-92 bulk package mechanical data . 25-feb-2008 5 corrected so-8 package mechanical data. corrected footnote for automotive grade order codes in order code table. corrected packing information for to-92 devices in order code table. 04-jun-2009 6 changed i min to 0.6 ma in ta b l e 3 and ta bl e 4 . increased temperature range to 125c in temperature curves. added ta bl e 5 , dedicated to automotive version. increased high temperature for automotive range up to +125c in ta b l e 5 and in table 12: order codes . inserted accuracy column in ta bl e 1 2 . 09-jun-2009 7 corrected minor error in package column in ta bl e 1 2 . 14-mar-2011 8 added figure 3 on page 3 , section 4.4 on page 15 and section 4.5 on page 16 . 07-oct-2011 9 added new package mechanical data table 11 on page 17 and figure 29 on page 17 . updated table 12 on page 18 . 17-nov-2011 10 added new part number tl432, new order code table 12 on page 18 and pin connection for tl432 figure 3 on page 3 . 03-dec-2012 11 removed temperature range in title table 3 on page 5 , table 4 on page 6 and table 5 on page 7 .
tl431, tl432 doc id 4467 rev 11 21/21 please read carefully: information in this document is provided solely in connection with st products. stmicroelectronics nv and its subsidiaries (?st ?) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described he rein at any time, without notice. all st products are sold pursuant to st?s terms and conditions of sale. purchasers are solely responsible for the choice, selection and use of the st products and services described herein, and st as sumes no liability whatsoever relating to the choice, selection or use of the st products and services described herein. no license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. i f any part of this document refers to any third party products or services it shall not be deemed a license grant by st for the use of such third party products or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoev er of such third party products or services or any intellectual property contained therein. unless otherwise set forth in st?s terms and conditions of sale st disclaims any express or implied warranty with respect to the use and/or sale of st products including without limitation implied warranties of merchantability, fitness for a particular purpose (and their equivalents under the laws of any jurisdiction), or infringement of any patent, copyright or other intellectual property right. unless expressly approved in writing by two authorized st representatives, st products are not recommended, authorized or warranted for use in military, air craft, space, life saving, or life sustaining applications, nor in products or systems where failure or malfunction may result in personal injury, death, or severe property or environmental damage. st products which are not specified as "automotive grade" may only be used in automotive applications at user?s own risk. resale of st products with provisions different from the statements and/or technical features set forth in this document shall immediately void any warranty granted by st for the st product or service described herein and shall not create or extend in any manner whatsoev er, any liability of st. st and the st logo are trademarks or register ed trademarks of st in various countries. information in this document supersedes and replaces all information previously supplied. the st logo is a registered trademark of stmicroelectronics. all other names are the property of their respective owners. ? 2012 stmicroelectronics - all rights reserved stmicroelectronics group of companies australia - belgium - brazil - canada - china - czech republic - finland - france - germany - hong kong - india - israel - ital y - japan - malaysia - malta - morocco - philippines - singapore - spain - sweden - switzerland - united kingdom - united states of america www.st.com

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