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this is information on a product in full production. january 2014 docid023303 rev 3 1/16 TLVH431 programmable shunt voltage reference datasheet - production data features ? adjustable output voltage: 1.24 v to 18 v ? low operating current: 100 a at 25 c ? 0.25%, 0.5% and 1.5% voltage precision ? sink current capability up to 60 ma ? -40 to +125 c temperature range ? 100 ppm/c maximum temperature coefficient ? available in sot23-3l, sot23-5l and sot323-6l packages applications ? computers ? battery chargers ? switch mode power supplies ? battery operated equipment ? data acquisition systems ? energy management description the TLVH431 is a low power programmable shunt voltage reference, with guaranteed temperature stability over the entire operating temperature range. the output voltage may be set to any value between 1.24 v and 18 v by means of an external resistor divider. the TLVH431 operates with a wide current range from 100 a to 60 ma with a typical dynamic impedance of 0.22 . available in sot23-3l, sot23-5l and sot323- 6l surface mounted packages, it can be designed in applications where space saving is a critical issue. the low operating current is a key advantage for power restricted designs. sot323-6l sot23-3l sot23-5l table 1. device summary part number precision package temperature range TLVH431ail3t 0.5% sot23-3l -40 to +125c TLVH431bil3t 0.25% TLVH431lil3t 1.5% TLVH431ail5t 0.5% sot23-5l TLVH431bil5t 0.25% TLVH431lil5t 1.5% TLVH431aict 0.5% sot323-6l TLVH431bict 0.25% TLVH431lict 1.5% www.st.com
contents TLVH431 2/16 docid023303 rev 3 contents 1 pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5 package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 6 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
docid023303 rev 3 3/16 TLVH431 pin configuration 16 1 pin configuration figure 1. pin configuration (top view) sot23-5l sot23-3l sot323-6l am12710v1 am12711v1 am12712v1
maximum ratings TLVH431 4/16 docid023303 rev 3 2 maximum ratings note: absolute maximum ratings are those values beyond which damage to the device may occur. functional operation under these conditions is not implied. table 2. absolute maximum ratings symbol parameter value unit vka cathode to anode voltage 22 v i k continuous cathode current range - 100 to +100 ma i ref reference input current range - 0.05 to +3 ma t stg storage temperature - 65 to +150 c esd human body model (hbm) 2 kv machine model (mm) 200 v charged device model 1500 v t lead lead temperature (soldering) 10 sec 260 c t j max. junction temperature +150 c table 3. thermal data symbol parameter sot323-6l sot23-3l sot23-5l unit r thja thermal resistance junction-ambient 221 248 157 c/w r thjc thermal resistance junction-case 110 136 67 c/w table 4. operating conditions symbol parameter value unit v ka cathode to anode voltage v ref to 18 v i kmin minimum operating current 100 a i kmax maximum operating current 60 ma t oper operating free air temperature range -40 to +125 c
docid023303 rev 3 5/16 TLVH431 electrical characteristics 16 3 electrical characteristics i k = 10 ma, t amb = 25 c (unless otherwise specified). note: limits are 100% production tested at 25 c. limits over the temperature range are guaranteed through correlation and by design. table 5. electrical characteristics for TLVH431 symbol parameter test conditions min. typ. max. unit v ref reference voltage v ka = v ref TLVH431a 0.5% TLVH431b 0.25% TLVH431l 1.5% 1.234 1.237 1.222 1.24 1.246 1.243 1.258 v v ref reference voltage variation overtemperature range (1) - 40 c < t amb < +125 c TLVH431a 0.5% TLVH431b 0.25% TLVH431l 1.5% -26.7 -23.5 -39 +26.7 +23.5 +39 mv v ka / t average temperature coefficient v ka = v ref, - 40 c < t amb < +125 c 30 100 ppm/c i kmin minimum cathode current for regulation v ka = v ref 60 100 a v ka = v kamax 160 200 i kmin minimum cathode current variation overtemperature range v ka = v ref , - 40 c < t amb < +125 c 70 100 a v ka = v kamax, - 40 c < t amb < +125c 100 200 i ref reference input current r 1 = 10 k , r 2 = 1.5 2.5 a i ref reference current variation overtemperature range r 1 = 10 k , r 2 = - 40 c < t amb < + 125 c 2.5 3.5 a ratio of change in reference input voltage to change in cathode to anode voltage v ka = 18 v to v ref -2 mv/v v ka = 18 v to v ref - 40 c < t amb < +125 c -2.5 i off off-state cathode current v ka = v kamax, v ref = gnd 10 80 na i off off-state cathode current overtemperature range v ka = v kamax, v ref = gnd - 40 c < t amb < +125 c 1000 2000 na ? r ka ? static impedance v ka = v ref, i k = 100 a to 60 ma 0.14 0.62 w ? z ka ? dynamic impedance (2) v ka = v ref, i k = 10 ma to 60 ma, f 1 khz 0.22 0.85 w e n wide band noise i k = 10 ma; 10 hz < f < 100 khz 30 mv rms t on turn-on setting time v ka = v ref, i k = 10 ma 40 70 sec 1. the overtemperature tolerance values are calculated as: vk 25 c x {tolerance 25 c +[(ppm max / c) x ( t)]}. example: TLVH431a v k = 1.24 x (0.5% + 100 ppm/ c x 165 c) = 1.24 x (0.5%+1.65%)= 1.24 x 2.15% = 26.7 mv. 2. the dynamic impedance is defined as ? z ka ?= v ka / i k. vref vka ------------
typical performance characteristics TLVH431 6/16 docid023303 rev 3 4 typical performance characteristics the following plots are referred to the typical application circuit and, unless otherwise noted, at t a = 25 c. figure 2. test circuit for v ka = v ref figure 3. test circuit for v ka > v ref figure 4. reference voltage vs. temperature figure 5. minimum cathode current for regulation vs. temperature figure 6. off-state cathode current vs. temperature figure 7. reference input current vs. temperature am11713v1 am11714v1 am11715v1 1220 1225 1230 1235 1240 1245 1250 1255 1260 -40 -25 0 25 70 105 125 v ref [mv] temperature c v ka = v ref , i k = 10 ma am11716v1 30 40 50 60 70 80 90 100 -40 -25 0 25 70 105 125 minmum cathode current [a] temperature c v ka = v ref am11717v1 0 20 40 60 80 100 120 140 160 180 200 -40 -25 0 25 70 105 125 off-state cathode current [ na ] temperature c v ka = 18 v, v ref = gnd am11718v1 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 -40 -25 0 25 70 105 125 reference input current [a] temperature c i k = 10 ma , r1 = 10 k , r 2 =
docid023303 rev 3 7/16 TLVH431 typical performance characteristics 16 figure 8. cathode current vs. cathode voltage figure 9. v ref vs. v ka am11719v1 1.e+01 1.e+02 1.e+03 1.e+04 1.e+05 0.7 0.8 0.9 1 1.1 1.2 1.3 1.4 cathode current ik [a] reference voltage [mv] v ka = v ref am11720v1 v ref vs. v ka ,i k =10 ma -16 -14 -12 -10 -8 -6 -4 -2 0 0 5 10 15 20 25 cathode voltage v ka [v] v ref [mv] figure 10. wideband noise figure 11. gain and phase vs. frequency am11721v1 0 50 100 150 200 250 300 350 400 450 500 0.1 1 10 100 1000 10000 frequency (khz) noise [ nv / sqr (hz)] i k = 10 ma, no c out am11722v1 -20 -10 0 10 20 30 40 50 0.1 1 10 100 1000 frequency (khz) gain (db) -80 -60 -40 -20 0 20 40 60 80 100 120 140 160 180 200 phase ( ) i k =10ma, v ka =v ref ,noc out gain phase figure 12. turn-on (no c load ) figure 13. turn-on (c load = 10 nf) v in from 0 to 4 v, i k = 1 ma, no c load v in from 0 to 4 v, i k = 1 ma, c load = 10 nf
package mechanical data TLVH431 8/16 docid023303 rev 3 5 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. figure 14. sot23-3l drawing dimensions 7110469_b
docid023303 rev 3 9/16 TLVH431 package mechanical data 16 table 6. sot23-3l mechanical data dim. mm min. typ. max. a 0.89 1.12 a1 0.01 0.10 a2 0.88 0.95 1.02 b 0.30 0.50 c 0.08 0.20 d 2.80 2.90 3.04 e 2.10 2.64 e1 1.20 1.30 1.40 e0.95 e1 1.90 l 0.40 0.50 0.60 l1 0.54 k0 8
package mechanical data TLVH431 10/16 docid023303 rev 3 figure 15. sot23-5l drawing dimensions 7049676_i
docid023303 rev 3 11/16 TLVH431 package mechanical data 16 table 7. sot23-5l mechanical data dim. mm min. typ. max. a 0.90 1.20 1.45 a1 0.15 a2 0.90 1.05 1.30 b 0.35 0.40 0.50 c 0.09 0.15 0.20 d 2.80 2.90 3.00 d1 1.90 e0.95 e 2.60 2.80 3.00 f 1.50 1.60 1.75 l 0.10 0.35 0.60 k 0 10
package mechanical data TLVH431 12/16 docid023303 rev 3 figure 16. sot323-6l drawing dimensions 7095021_f
docid023303 rev 3 13/16 TLVH431 package mechanical data 16 figure 17. sot23-5l footprint recommended data (dimensions are in mm) table 8. sot323-6l mechanical data dim. mm min. typ. max. a 0.80 1.10 a1 0 0.10 a2 0.80 1.00 b 0.15 0.30 c 0.10 0.18 d 1.80 2.20 e 1.15 1.35 e0.65 he 1.80 2.40 l 0.10 0.40 q1 0.10 0.40 7049676_i
package mechanical data TLVH431 14/16 docid023303 rev 3 figure 18. sot323-6l footprint recommended data (dimensions are in mm) 7095021_f
docid023303 rev 3 15/16 TLVH431 revision history 16 6 revision history table 9. document revision history date revision changes 13-jun-2012 1 initial release. 23-jan-2014 2 updated the features in cover page, table 1: device summary and table 5: electrical characteristics for TLVH431 . minor text changes. 28-jan-2014 3 updated the min. value of v ref in table 5: electrical characteristics for TLVH431 .
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