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tl1431 www.ti.com slvs062m ? december 1991 ? revised april 2012 precision programmable reference check for samples: tl1431 1 features 2 ? 0.4% initial voltage tolerance ? sink current capability ? 1 ma to 100 ma ? 0.2- ? typical output impedance ? low reference current (ref) ? fast turnon ? 500 ns ? adjustable output voltage ? v i(ref) to 36 v description/ordering information the tl1431 is a precision programmable reference with specified thermal stability over automotive, commercial, and military temperature ranges. the output voltage can be set to any value between v i(ref) (approximately 2.5 v) and 36 v with two external resistors (see figure 16 ). this device has a typical output impedance of 0.2 ? . active output circuitry provides a very sharp turnon characteristic, making the device an excellent replacement for zener diodes and other types of references in applications such as onboard regulation, adjustable power supplies, and switching power supplies. the tl1431c is characterized for operation over the commercial temperature range of 0 c to 70 c. the tl1431q is characterized for operation over the full automotive temperature range of ? 40 c to 125 c. the tl1431m is characterized for operation over the full military temperature range of ? 55 c to 125 c. 1 please be aware that an important notice concerning availability, standard warranty, and use in critical applications of texas instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 powerflex is a trademark of texas instruments. production data information is current as of publication date. copyright ? 1991 ? 2012, texas instruments incorporated products conform to specifications per the terms of the texas instruments standard warranty. production processing does not necessarily include testing of all parameters. lp package (top view) cathode anode ref fk package (top view) 3 2 1 20 19 9 10 11 12 13 45 6 7 8 1817 16 15 14 ncnc nc anode nc ncnc nc nc nc nc cathode nc ncnc refnc ncnc nc 12 3 4 87 6 5 cathode anodeanode nc refanode anode nc d package (top view) nc C no internal connection anode terminals are connected internally . 12 3 4 87 6 5 cathode ncnc nc refnc anode nc jg or pw package (top view) nc C no internal connection ktp package (top view) cathode anode ref anode
tl1431 slvs062m ? december 1991 ? revised april 2012 www.ti.com ordering information (1) t a package (2) orderable part number top-side marking powerflex ? ? ktp reel of 3000 tl1431cktpr obsolete tube of 75 tl1431cd soic ? d 1431c reel of 2500 tl1431cdr bulk of 1000 tl1431clp 0 c to 70 c to-226 / to-92 ? lp reel of 2000 tl1431clpr tl1431c ammo of 2000 tl1431clpme3 tube of 150 tl1431cpw tssop ? pw t1431 reel of 2000 tl1431cpwr tube of 75 tl1431qd soic ? d tl1431qd reel of 2500 tl1431qdr ? 40 c to 125 c tube of 150 tl1431qpw tssop ? pw t1431qpw reel of 2000 tl1431qpwr cdip ? jg tube of 50 tl1431mjg tl1431mjg ? 55 c to 125 c lccc ? fk tube of 55 tl1431mfk tl1431mfk (1) for the most current package and ordering information, see the package option addendum at the end of this document, or see the ti web site at www.ti.com . (2) package drawings, thermal data, and symbolization are available at www.ti.com/packaging . symbol functional block diagram 2 submit documentation feedback copyright ? 1991 ? 2012, texas instruments incorporated product folder links: tl1431 + ? cathode anode ref v ref ref anode cathode
tl1431 www.ti.com slvs062m ? december 1991 ? revised april 2012 equivalent schematic a. all component values are nominal. b. pin numbers shown are for the d package. absolute maximum ratings (1) over operating free-air temperature range (unless otherwise noted) min max unit v ka cathode voltage (2) 37 v i ka continuous cathode current range ? 100 150 ma i i(ref) reference input current range ? 0.05 10 ma d package 97 ja package thermal impedance (3) (4) lp package 140 c/w pw package 149 fk package 5.61 jc package thermal impedance (5) (6) c/w jg package 14.5 t j operating virtual junction temperature 150 c lead temperature 1,6 mm (1/16 in) from case for 10 s 260 c t stg storage temperature range ? 65 150 c (1) stresses beyond 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 beyond those indicated under " recommended operating conditions " is not implied. exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. (2) all voltage values are with respect to anode, unless otherwise noted. (3) maximum power dissipation is a function of t j(max) , ja , and t a . the maximum allowable power dissipation at any allowable ambient temperature is p d = (t j(max) ? t a )/ ja . operating at the absolute maximum t j of 150 c can affect reliability. (4) the package thermal impedance is calculated in accordance with jesd 51-7. (5) maximum power dissipation is a function of t j(max) , jc , and t c . the maximum allowable power dissipation at any allowable case temperature is p d = (t j(max) ? t c )/ jc . operating at the absolute maximum t j of 150 c can affect reliability. (6) the package thermal impedance is calculated in accordance with mil-std-883. copyright ? 1991 ? 2012, texas instruments incorporated submit documentation feedback 3 product folder links: tl1431 cathode ref anode 800 w 2.4 k w 4 k w 20 pf 1 k w 7.2 k w 800 w 800 w 150 w 10 k w 3.28 k w 20 pf 18 2, 3, 6, 7
(3) the output impedance is defined as: , which is approximately equal to . tl1431 slvs062m ? december 1991 ? revised april 2012 www.ti.com recommended operating conditions min max unit v ka cathode voltage v i(ref) 36 v i ka cathode current 1 100 ma tl1431c 0 70 t a operating free-air temperature tl1431q ? 40 125 c tl1431m ? 55 125 electrical characteristics at specified free-air temperature, i ka = 10 ma (unless otherwise noted) tl1431c test parameter test conditions t a (1) unit circuit min typ max 25 c 2490 2500 2510 v i(ref) reference input voltage v ka = v i(ref) figure 1 mv full range 2480 2520 deviation of reference input v i(dev) voltage over full temperature v ka = v i(ref) full range figure 1 4 20 mv range (2) ratio of change in reference input voltage to the change in v ka = 3 v to 36 v full range figure 2 ? 1.1 ? 2 mv/v cathode voltage 25 c 1.5 2.5 i i(ref) reference input current r1 = 10 k ? , r2 = figure 2 a full range 3 deviation of reference input i i(dev) current over full temperature r1 = 10 k ? , r2 = full range figure 2 0.2 1.2 a range (2) minimum cathode current for i min v ka = v i(ref) 25 c figure 1 0.45 1 ma regulation 25 c 0.18 0.5 i off off-state cathode current v ka = 36 v, v i(ref) = 0 figure 3 a full range 2 v ka = v i(ref) , f 1 khz, |z ka | output impedance (3) 25 c figure 1 0.2 0.4 ? i ka = 1 ma to 100 ma (1) full range is 0 c to 70 c for c-suffix devices. (2) the deviation parameters v i(dev) and i i(dev) are defined as the differences between the maximum and minimum values obtained over the rated temperature range. the average full-range temperature coefficient of the reference input voltage vi(ref) is defined as: vi(ref) is positive or negative, depending on whether minimum v i(ref) or maximum v i(ref) , respectively, occurs at the lower temperature. when the device is operating with two external resistors (see figure 2), the total dynamic impedance of the circuit is given by: 4 submit documentation feedback copyright ? 1991 ? 2012, texas instruments incorporated product folder links: tl1431 ? i ? v |z'| = ? i ka ? v ka |z | = ka r2 r1 |z | ka ( 1 + ( where:? t a is the rated operating temperature range of the device. max v i(ref) min v i(ref) B t a v i(dev) vi(ref) ppm c v i ( dev ) v i ( ref ) at 25 c 10 6 t a ( ( = ( ( ? v ka ? v i(ref)
(4) the output impedance is defined as: , which is approximately equal to . tl1431 www.ti.com slvs062m ? december 1991 ? revised april 2012 electrical characteristics at specified free-air temperature, i ka = 10 ma (unless otherwise noted) tl1431q tl1431m test parameter test conditions t a (1) unit circuit min typ max min typ max 25 c 2490 2500 2510 2475 2500 2540 v i(ref) reference input voltage v ka = v i(ref) figure 1 mv full 2470 2530 2460 2550 range deviation of reference full v i(dev) input voltage over full v ka = v i(ref) figure 1 17 55 17 55 (3) mv range temperature range (2) ratio of change in reference input voltage full v ka = 3 v to 36 v figure 2 ? 1.1 ? 2 ? 1.1 ? 2 mv/v to the change in range cathode voltage 25 c 1.5 2.5 1.5 2.5 i i(ref) reference input current r1 = 10 k ? , r2 = figure 2 a full 4 5 range deviation of reference full i i(dev) input current over full r1 = 10 k ? , r2 = figure 2 0.5 2 0.5 3 (3) a range temperature range (2) minimum cathode i min v ka = v i(ref) 25 c figure 1 0.45 1 0.45 1 ma current for regulation 25 c 0.18 0.5 0.18 0.5 off-state cathode i off v ka = 36 v, v i(ref) = 0 figure 3 a full current 2 2 range v ka = v i(ref) , f 1 khz, |z ka | output impedance (4) 25 c figure 1 0.2 0.4 0.2 0.4 ? i ka = 1 ma to 100 ma (1) full range is ? 40 c to 125 c for q-suffix devices and ? 55 c to 125 c for m-suffix devices. (2) the deviation parameters v i(dev) and i i(dev) are defined as the differences between the maximum and minimum values obtained over the rated temperature range. the average full-range temperature coefficient of the reference input voltage vi(ref) is defined as: vi(ref) is positive or negative, depending on whether minimum v i(ref) or maximum v i(ref) , respectively, occurs at the lower temperature. (3) on products compliant to mil-prf-38535, this parameter is not production tested. when the device is operating with two external resistors (see figure 2), the total dynamic impedance of the circuit is given by: copyright ? 1991 ? 2012, texas instruments incorporated submit documentation feedback 5 product folder links: tl1431 ? i ? v |z'| = ? i ka ? v ka |z | = ka r2 r1 |z | ka ( 1 + ( where:? t a is the rated operating temperature range of the device. max v i(ref) min v i(ref) B t a v i(dev) vi(ref) ppm c v i ( dev ) v i ( ref ) at 25 c 10 6 t a ( ( = ( ( ? v ka ? v i(ref)
tl1431 slvs062m ? december 1991 ? revised april 2012 www.ti.com parameter measurement information figure 1. test circuit for v (ka) = v ref figure 2. test circuit for v (ka) > v ref figure 3. test circuit for i off typical characteristics data at high and low temperatures are applicable only within the recommended operating free-air temperature ranges of the various devices. table of graphs graph figure reference voltage vs free-air temperature figure 4 reference current vs fire-air temperature figure 5 cathode current vs cathode voltage figure 6 , figure 7 off-state cathode current vs free-air temperature figure 8 ratio of delta reference voltage to delta cathode voltage vs free-air temperature figure 9 equivalent input-noise voltage vs frequency figure 10 equivalent input-noise voltage over a 10-second period figure 11 small-signal voltage amplification vs frequency figure 12 reference impedance vs frequency figure 13 pulse response figure 14 stability boundary conditions figure 15 6 submit documentation feedback copyright ? 1991 ? 2012, texas instruments incorporated product folder links: tl1431 input v ka i ka v i(ref) input v ka i ka v i(ref) i i(ref) r1 r2 v ka v i(ref) 1 r1 r2 i i(ref) r1 input v ka i off
tl1431 www.ti.com slvs062m ? december 1991 ? revised april 2012 figure 4. figure 5. figure 6. figure 7. copyright ? 1991 ? 2012, texas instruments incorporated submit documentation feedback 7 product folder links: tl1431 200 0 ? 200 ?1 0 1 2 3 4 400 600 ca thode current vs ca thode vol tage 800 v ka ? cathode v oltage ? v v ka = v i(ref) t a = 25 c ?2 ? cathode current ? i ka a m 0 ? 50 ? 100? 150 ? 3 ? 2 ? 1 50 100 ca thode current vs ca thode vol tage 150 0 1 2 3 v ka ? cathode v oltage ? v v ka = v i(ref) t a = 25 c ? cathode current ? ma i ka 2.5 2.492.48 ? 50 ? 25 0 25 50 2.51 reference vol tage vs free-air tempera ture 2.52 75 100 125 v i(ref) = v ka i ka = 10 ma t a ? free-air t emperature ? c ? reference v oltage ? v v i(ref) reference current vs free-air tempera ture ? 50 ? 25 0 25 50 75 100 125 0 0.5 1 1.5 2 2.5 t a ? free-air t emperature ? c i ka = 10 ma r1 = 10 k w r2 = ? reference current ? i i(ref) a m
tl1431 slvs062m ? december 1991 ? revised april 2012 www.ti.com figure 8. figure 9. figure 10. 8 submit documentation feedback copyright ? 1991 ? 2012, texas instruments incorporated product folder links: tl1431 180140 120 100 10 100 1 k 220 240 f ? frequency ? hz equiv alent input -noise vol tage vs frequency 260 10 k 100 k 200160 i o = 10 ma t a = 25 c ? equivalent input-noise v oltage ? nv/ hz v n ?1.15?1.25 ?1.35 ?1.45 ? 25 0 ?1.05 ra tio of del t a reference vol t age t o delt a ca thode vol tage vs free-air tempera ture 25 50 75 100 125 t a ? free-air t emperature ? c v ka = 3 v to 36 v ?0.85?0.95 ?50 ? mv/v d v i(ref) /d v ka 0.15 0.1 0.05 0 ? 25 0 25 50 75 0.2 0.25 off-sta te ca thode current vs free-air tempera ture 0.3 100 125 0.35 0.4 t a ? free-air t emperature ? c v ka = 36 v v i(ref) = 0 ?50 i ? off-state cathode current ? a m ka(off)
tl1431 www.ti.com slvs062m ? december 1991 ? revised april 2012 figure 11. copyright ? 1991 ? 2012, texas instruments incorporated submit documentation feedback 9 product folder links: tl1431 ? 1 ? 2 ? 4 ? 5 ? 6 3 ? 3 0 2 4 6 10 2 t ? time ? s equivalent input-noise voltage over a 10-second period 4 8 10 5 6 + ? + ? test circuit for 0.1-hz to 10-hz equivalent input-noise voltage f = 0.1 to 10 hz i ka = 10 ma t a = 25 c ? equivalent input-noise v oltage ? v n m v 19.1 v 1 k w 910 w 500 f 2000 f v cc v cc v ee v ee tl1431(dut) 820 w 16 w 160 k w 0.1 f 16 w 16 w 1 m f 1 f 33 k w 33 k w 2.2 f tle2027 a v = 2 v/v 1 m w cro tle2027a v = 10 v/mv
tl1431 slvs062m ? december 1991 ? revised april 2012 www.ti.com figure 12. figure 13. 10 submit documentation feedback copyright ? 1991 ? 2012, texas instruments incorporated product folder links: tl1431 30 0 1 k 10 k 100 k f ? frequency ? hz 60 1 m 10 m 40 5020 10 test circuit for voltage amplification i ka = 10 ma t a = 25 c ? small-signal v oltage amplification ? db a v small-signal voltage amplification vs frequency 9 m f 15 k w 8.25 k w i (k) 230 w output gnd +? 0.1 1 k 10 k 100 k 1 m 10 m 1 f ? frequency ? hz reference impedance vs frequency 10 100 test circuit for reference impedance 1 k w 50 w i (k) output gnd i ka = 1 ma to 100 ma t a = 25 c ? + |zka | ? reference impedance ? o |z ka w
tl1431 www.ti.com slvs062m ? december 1991 ? revised april 2012 figure 14. a. the areas under the curves represent conditions that may cause the device to oscillate. for curves b, c, and d, r2, and v+ are adjusted to establish the initial v ka and i ka conditions, with c l = 0. v batt and c l then are adjusted to determine the ranges of stability. figure 15. copyright ? 1991 ? 2012, texas instruments incorporated submit documentation feedback 11 product folder links: tl1431 stability boundary conditions 5040 10 0 0.001 0.01 0.1 1 70 90 100 10 30 8060 20 test circuit for curve a test circuit for curves b, c, and d c l ? load capacitance ? f a-v ka = v i(ref) b-v ka = 5 v c-v ka = 10 v d-v ka = 15 v stable stable a b c d i ka = 10 ma t a = 25 c c l c l 150 w 150 w i ka i ka v batt v batt r1 = 10 k w r2 + ? + ? v i v i ? cathode current ? ma i ka 32 1 0 0 1 2 3 4 4 5 pulse response 6 5 6 7 test circuit for pulse response t a = 25 c input output input and output v oltages ? v t ? time ? s pulse generator f = 100 khz 50 w 220 w outputgnd v i
tl1431 slvs062m ? december 1991 ? revised april 2012 www.ti.com application information table 1. table of application circuits application figure shunt regulator figure 16 single-supply comparator with temperature-compensated threshold figure 17 precision high-current series regulator figure 18 output control of a three-terminal fixed regulator figure 19 higher-current shunt regulator figure 20 crowbar figure 21 precision 5-v, 1.5-a, 0.5% regulator figure 22 5-v precision regulator figure 23 pwm converter with 0.5% reference figure 24 voltage monitor figure 25 delay timer figure 26 precision current limiter figure 27 precision constant-current sink figure 28 a. r should provide cathode current 1 ma to the tl1431 at minimum v (batt) . figure 16. shunt regulator figure 17. single-supply comparator with temperature-compensated threshold a. r should provide cathode current 1 ma to the tl1431 at minimum v (batt) . 12 submit documentation feedback copyright ? 1991 ? 2012, texas instruments incorporated product folder links: tl1431 v (batt) v o input v on 2 v v off v (batt) tl1431 v it = 2.5 v gnd v (batt) r r1 0.1% r2 0.1% v i(ref) v o tl1431 v o 1 r1 r2 v i(ref)
tl1431 www.ti.com slvs062m ? december 1991 ? revised april 2012 figure 18. precision high-current series regulator figure 19. output control of a three-terminal fixed regulator a. refer to the stability boundary conditions in figure 15 to determine allowable values for c. figure 20. higher-current shunt regulator figure 21. crowbar a. r b should provide cathode current 1 ma to the tl1431. figure 22. precision 5-v, 1.5-a, 0.5% regulator figure 23. 5-v precision regulator copyright ? 1991 ? 2012, texas instruments incorporated submit documentation feedback 13 product folder links: tl1431 v (batt) v o = 5 v r b tl1431 27.4 k w 0.1% 27.4 k w 0.1% lm317 in out v (batt) 8.2 k w tl1431 adjust 243 w 0.1%243 w 0.1% v o = 5 v , 1.5 a, 0.5% v (batt) tl1431 v o 1 r1 r2 v i(ref) r1 r2 r v o v (batt) v o tl1431 r1 r2 c v trip 1 r1 r2 v i(ref) v (batt) in out v o tl1431 common m a7805 r1r2 v 1 r1 r2 v i(ref) min v = v i(ref) + 5 v v (batt) r 30 w tl1431 2n2222 2n2222 0.01 m f 4.7 k w r1 0.1% r2 0.1% v o v o 1 r1 r2 v i(ref)
tl1431 slvs062m ? december 1991 ? revised april 2012 www.ti.com figure 24. pwm converter with 0.5% reference a. select r3 and r4 to provide the desired led intensity and cathode current 1 ma to the tl1431. figure 25. voltage monitor figure 26. delay timer figure 27. precision current limiter figure 28. precision constant-current sink 14 submit documentation feedback copyright ? 1991 ? 2012, texas instruments incorporated product folder links: tl1431 v (batt) r1 r cl 0.1% tl1431 i o v i(ref) r cl i ka i o r1 v (batt) i o h fe i ka v (batt) tl1431 i o r s 0.1% i o v i(ref) r s tl1431 12 v 680 w 2 k w r off on c delay r c i i 12 v ( 12 v ) v i(ref) v (batt) r3 r4 r1ar2a r1b r2b tl1431 low limit 1 r1b r2b v i(ref) high limit 1 r1a r2a v i(ref) led on when low limit < v (batt) < high limit tl1431 + ? tl1431 12 v 6.8 k w 5 v +0.5% 10 k w 10 k w 0.1% 10 k w 0.1% v cc x not used tl598 feedback
tl1431 www.ti.com slvs062m ? december 1991 ? revised april 2012 revision history changes from revision october 2007 (n) to revision m page ? added ammo option to the lp package in the ordering information table. ............................................................ 2 copyright ? 1991 ? 2012, texas instruments incorporated submit documentation feedback 15 product folder links: tl1431
package option addendum www.ti.com 10-aug-2016 addendum-page 1 packaging information orderable device status (1) package type package drawing pins package qty eco plan (2) lead/ball finish (6) msl peak temp (3) op temp (c) device marking (4/5) samples 5962-9962001q2a active lccc fk 20 1 tbd post-plate n / a for pkg type -55 to 125 5962- 9962001q2a tl1431mfkb 5962-9962001QPA active cdip jg 8 1 tbd a42 n / a for pkg type -55 to 125 9962001qpa tl1431m tl1431cd active soic d 8 75 green (rohs & no sb/br) cu nipdau level-1-260c-unlim 0 to 70 1431c tl1431cde4 active soic d 8 75 green (rohs & no sb/br) cu nipdau level-1-260c-unlim 0 to 70 1431c tl1431cdg4 active soic d 8 75 green (rohs & no sb/br) cu nipdau level-1-260c-unlim 0 to 70 1431c tl1431cdr active soic d 8 2500 green (rohs & no sb/br) cu nipdau level-1-260c-unlim 0 to 70 1431c tl1431cdre4 active soic d 8 2500 green (rohs & no sb/br) cu nipdau level-1-260c-unlim 0 to 70 1431c tl1431cdrg4 active soic d 8 2500 green (rohs & no sb/br) cu nipdau level-1-260c-unlim 0 to 70 1431c tl1431cktpr obsolete pfm ktp 2 tbd call ti call ti 0 to 70 tl1431clp active to-92 lp 3 1000 pb-free (rohs) cu sn n / a for pkg type 0 to 70 tl1431c tl1431clpe3 active to-92 lp 3 1000 pb-free (rohs) cu sn n / a for pkg type 0 to 70 tl1431c tl1431clpm obsolete to-92 lp 3 tbd call ti call ti 0 to 70 tl1431clpme3 active to-92 lp 3 2000 pb-free (rohs) cu sn n / a for pkg type 0 to 70 tl1431c tl1431clpr active to-92 lp 3 2000 pb-free (rohs) cu sn n / a for pkg type 0 to 70 tl1431c tl1431clpre3 active to-92 lp 3 2000 pb-free (rohs) cu sn n / a for pkg type 0 to 70 tl1431c tl1431cpw active tssop pw 8 tbd call ti call ti 0 to 70 t1431 tl1431cpwr active tssop pw 8 2000 green (rohs & no sb/br) cu nipdau | cu sn level-1-260c-unlim 0 to 70 t1431
package option addendum www.ti.com 10-aug-2016 addendum-page 2 orderable device status (1) package type package drawing pins package qty eco plan (2) lead/ball finish (6) msl peak temp (3) op temp (c) device marking (4/5) samples tl1431cpwrg4 active tssop pw 8 2000 green (rohs & no sb/br) cu nipdau level-1-260c-unlim 0 to 70 t1431 tl1431mfk active lccc fk 20 1 tbd post-plate n / a for pkg type -55 to 125 tl1431mfk tl1431mfkb active lccc fk 20 1 tbd post-plate n / a for pkg type -55 to 125 5962- 9962001q2a tl1431mfkb tl1431mjg active cdip jg 8 1 tbd a42 n / a for pkg type -55 to 125 tl1431mjg tl1431mjgb active cdip jg 8 1 tbd a42 n / a for pkg type -55 to 125 9962001qpa tl1431m tl1431qd active soic d 8 75 green (rohs & no sb/br) cu nipdau level-1-260c-unlim -40 to 125 1431q tl1431qdg4 active soic d 8 75 green (rohs & no sb/br) cu nipdau level-1-260c-unlim -40 to 125 1431q tl1431qdr active soic d 8 2500 green (rohs & no sb/br) cu nipdau level-1-260c-unlim -40 to 125 1431q tl1431qdrg4 active soic d 8 2500 green (rohs & no sb/br) cu nipdau level-1-260c-unlim -40 to 125 1431q tl1431qlp obsolete to-92 lp 3 tbd call ti call ti -40 to 125 tl1431qlpr obsolete to-92 lp 3 tbd call ti call ti -40 to 125 tl1431qpwr obsolete tssop pw 8 tbd call ti call ti -40 to 125 tl1431qpwrg4 active tssop pw 8 2000 green (rohs & no sb/br) cu nipdau level-1-260c-unlim -40 to 125 1431q (1) the marketing status values are defined as follows: active: product device recommended for new designs. lifebuy: ti has announced that the device will be discontinued, and a lifetime-buy period is in effect. nrnd: not recommended for new designs. device is in production to support existing customers, but ti does not recommend using this part in a new design. preview: device has been announced but is not in production. samples may or may not be available. obsolete: ti has discontinued the production of the device. (2) eco plan - the planned eco-friendly classification: pb-free (rohs), pb-free (rohs exempt), or green (rohs & no sb/br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. tbd: the pb-free/green conversion plan has not been defined. pb-free (rohs): ti's terms "lead-free" or "pb-free" mean semiconductor products that are compatible with the current rohs requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. where designed to be soldered at high temperatures, ti pb-free products are suitable for use in specified lead-free processes.
package option addendum www.ti.com 10-aug-2016 addendum-page 3 pb-free (rohs exempt): this component has a rohs exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. the component is otherwise considered pb-free (rohs compatible) as defined above. green (rohs & no sb/br): ti defines "green" to mean pb-free (rohs compatible), and free of bromine (br) and antimony (sb) based flame retardants (br or sb do not exceed 0.1% by weight in homogeneous material) (3) msl, peak temp. - the moisture sensitivity level rating according to the jedec industry standard classifications, and peak solder temperature. (4) there may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device. (5) multiple device markings will be inside parentheses. only one device marking contained in parentheses and separated by a "~" will appear on a device. if a line is indented then it is a continuation of the previous line and the two combined represent the entire device marking for that device. (6) lead/ball finish - orderable devices may have multiple material finish options. finish options are separated by a vertical ruled line. lead/ball finish values may wrap to two lines if the finish value exceeds the maximum column width. important information and disclaimer: the information provided on this page represents ti's knowledge and belief as of the date that it is provided. ti bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. efforts are underway to better integrate information from third parties. ti has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. ti and ti suppliers consider certain information to be proprietary, and thus cas numbers and other limited information may not be available for release. in no event shall ti's liability arising out of such information exceed the total purchase price of the ti part(s) at issue in this document sold by ti to customer on an annual basis. other qualified versions of tl1431, tl1431m : ? catalog: tl1431 ? automotive: tl1431-q1 , tl1431-q1 ? enhanced product: tl1431-ep , tl1431-ep ? military: tl1431m ? space: tl1431-sp , tl1431-sp note: qualified version definitions: ? catalog - ti's standard catalog product
package option addendum www.ti.com 10-aug-2016 addendum-page 4 ? automotive - q100 devices qualified for high-reliability automotive applications targeting zero defects ? enhanced product - supports defense, aerospace and medical applications ? military - qml certified for military and defense applications ? space - radiation tolerant, ceramic packaging and qualified for use in space-based application
tape and reel information *all dimensions are nominal device package type package drawing pins spq reel diameter (mm) reel width w1 (mm) a0 (mm) b0 (mm) k0 (mm) p1 (mm) w (mm) pin1 quadrant tl1431cdr soic d 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 q1 tl1431cpwr tssop pw 8 2000 330.0 12.4 7.0 3.6 1.6 8.0 12.0 q1 tl1431cpwrg4 tssop pw 8 2000 330.0 12.4 7.0 3.6 1.6 8.0 12.0 q1 tl1431qdr soic d 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 q1 tl1431qpwrg4 tssop pw 8 2000 330.0 12.4 7.0 3.6 1.6 8.0 12.0 q1 package materials information www.ti.com 28-apr-2016 pack materials-page 1
*all dimensions are nominal device package type package drawing pins spq length (mm) width (mm) height (mm) tl1431cdr soic d 8 2500 340.5 338.1 20.6 tl1431cpwr tssop pw 8 2000 367.0 367.0 35.0 tl1431cpwrg4 tssop pw 8 2000 367.0 367.0 35.0 tl1431qdr soic d 8 2500 340.5 338.1 20.6 tl1431qpwrg4 tssop pw 8 2000 367.0 367.0 35.0 package materials information www.ti.com 28-apr-2016 pack materials-page 2
mechanical data mcer001a january 1995 revised january 1997 post office box 655303 ? dallas, texas 75265 jg (r-gdip-t8) ceramic dual-in-line 0.310 (7,87) 0.290 (7,37) 0.014 (0,36) 0.008 (0,20) seating plane 4040107/c 08/96 5 4 0.065 (1,65) 0.045 (1,14) 8 1 0.020 (0,51) min 0.400 (10,16) 0.355 (9,00) 0.015 (0,38) 0.023 (0,58) 0.063 (1,60) 0.015 (0,38) 0.200 (5,08) max 0.130 (3,30) min 0.245 (6,22) 0.280 (7,11) 0.100 (2,54) 0 15 notes: a. all linear dimensions are in inches (millimeters). b. this drawing is subject to change without notice. c. this package can be hermetically sealed with a ceramic lid using glass frit. d. index point is provided on cap for terminal identification. e. falls within mil std 1835 gdip1-t8

www.ti.com package outline c typ 6.6 6.2 1.2 max 6x 0.65 8x 0.30 0.19 2x 1.95 0.15 0.05 (0.15) typ 0 - 8 0.25 gage plane 0.75 0.50 a note 3 3.1 2.9 b note 4 4.5 4.3 4221848/a 02/2015 tssop - 1.2 mm max height pw0008a small outline package notes: 1. all linear dimensions are in millimeters. any dimensions in parenthesis are for reference only. dimensioning and tolerancing per asme y14.5m. 2. this drawing is subject to change without notice. 3. this dimension does not include mold flash, protrusions, or gate burrs. mold flash, protrusions, or gate burrs shall not exceed 0.15 mm per side. 4. this dimension does not include interlead flash. interlead flash shall not exceed 0.25 mm per side. 5. reference jedec registration mo-153, variation aa. 1 8 0.1 c a b 5 4 pin 1 id area seating plane 0.1 c see detail a detail a typical scale 2.800
www.ti.com example board layout (5.8) 0.05 max all around 0.05 min all around 8x (1.5) 8x (0.45) 6x (0.65) (r ) typ 0.05 4221848/a 02/2015 tssop - 1.2 mm max height pw0008a small outline package symm symm land pattern example scale:10x 1 4 5 8 notes: (continued) 6. publication ipc-7351 may have alternate designs. 7. solder mask tolerances between and around signal pads can vary based on board fabrication site. metal solder mask opening non solder mask defined solder mask details not to scale solder mask opening metal under solder mask solder mask defined
www.ti.com example stencil design (5.8) 6x (0.65) 8x (0.45) 8x (1.5) (r ) typ 0.05 4221848/a 02/2015 tssop - 1.2 mm max height pw0008a small outline package notes: (continued) 8. laser cutting apertures with trapezoidal walls and rounded corners may offer better paste release. ipc-7525 may have alternate design recommendations. 9. board assembly site may have different recommendations for stencil design. symm symm 1 4 5 8 solder paste example based on 0.125 mm thick stencil scale:10x
mechanical data mpsf001f ? january 1996 ? revised january 2002 1 post office box 655303 ? dallas, texas 75265 ktp (r-psfm-g2) powerflex ? plastic flange-mount package 0.228 (5,79) 0.218 (5,54) 0.233 (5,91) 0.243 (6,17) 0.001 (0,02) 0.005 (0,13) 0.070 (1,78) seating plane 0.080 (2,03) 0.010 (0,25) nom gage plane 0.010 (0,25) 4073388/m 01/02 0.037 (0,94) 0.047 (1,19) 0.247 (6,27) 0.237 (6,02) nom 0.215 (5,46) 0.371 (9,42) 0.381 (9,68) 0.090 (2,29) 0.100 (2,54) 0.287 (7,29) 0.031 (0,79) 0.032 (0,81) max 0.277 (7,03) 0.025 (0,63) 0.130 (3,30) nom 0.090 (2,29) 0.180 (4,57) m 0.010 (0,25) 0.004 (0,10) 2 ? 6 0.040 (1,02) 0.050 (1,27) thermal tab (see note c) 0.010 (0,25) nom notes: a. all linear dimensions are in inches (millimeters). b. this drawing is subject to change without notice. c. the center lead is in electrical contact with the thermal tab. d. dimensions do not include mold protrusions, not to exceed 0.006 (0,15). e. falls within jedec to-252 variation ac. powerflex is a trademark of texas instruments.

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