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may 2017 docid2573 rev 15 1 / 24 this is information on a product in full production. www.st.c om lexx very low - dropout voltage regulator with inhibit function datasheet - production data features ? very low - dropout voltage (0.2 v typ.) ? very low quiescent current (typ. 50 a in off mode, 0.5 ma in on mode, no load) ? output current up to 100 ma ? output voltages: 3 v, 3.3 v, 4.5 v, 5 v, 8 v ? internal current and thermal limit ? small 2.2 f capacitor for stability ? available in 1% (a) or 2% (c) selection at 25 c ? supply voltage rejection: 80 db (typ.) ? temperature range: - 40 to 125 c description the lexx is a very low - dropout voltage regulator available in so - 8, to - 92 packages and over a wide range of output voltages. the very low - dropout voltage (0.2 v) and low quiescent current make it particularly suitab le for low - noise, low - power applications and in battery - powered systems. this device is pin - to - pin compatible with the l78l series. furthermore, in the 8 - pin configuration (so - 8), it uses a shutdown logic control (pin 5, ttl compatible). this means that wh en the device is used as a local regulator, a part of the board can be put in standby, decreasing the total power consumption. in the three - terminal configuration (to - 92), the device is always in on - state. it requires a 2.2 f capacitor for stability, re ducing the component size and cost. table 1: device summary order code output voltage (v) so - 8 to - 92 (ammopack) to - 92 (tape and reel) le30cd - tr 3 le33cd - tr le33cz - ap le33c z - tr 3.3 le45cd - tr 4.5 le50abd - tr le33abz - ap 5 le50cd - tr 5 le80cd - tr 8
contents lexx 2 / 24 docid2573 rev 15 contents 1 diagram ................................ ................................ ............................ 3 2 pin configur ation ................................ ................................ ............. 4 3 maximum ratings ................................ ................................ ............. 5 4 electrical characteristics ................................ ................................ 6 5 typ ical performance characteristics ................................ ........... 13 6 package information ................................ ................................ ..... 16 6.1 so - 8 package information ................................ .............................. 16 6.2 so - 8 packing information ................................ ................................ 18 6.3 to - 92 packing information ................................ .............................. 19 6.4 to - 92 ammopak packing informat ion ................................ ............. 21 7 revision history ................................ ................................ ............ 23
lexx diagram docid2573 rev 15 3 / 24 1 diagram figure 1 : block diagram
pin configuration lexx 4 / 24 docid2573 rev 15 2 pin configuration figure 2 : pin connections (so - 8 top view, to - 92 bottom view)
lexx maximum ratings docid2573 rev 15 5 / 24 3 maximum ratings table 2: absolute maximum ratings symbol parameter value unit v i dc input voltage 20 v i o output current internally limited (1) p tot power dissipation internally limited t stg storage temperat ure range - 65 to 150 c t op operating junction temperature range - 40 to 125 c notes: (1) our so - 8 package, used for voltage regulators, is modified internally to have pins 2, 3, 6 and 7 electrically fused to the die attach pad. this frame decreases the total thermal resistance of the package and increases its ability to dissipate power when an appropriate area of copper on the printed circuit board is available for heatsinking. the external dimensions are the same as so - 8 standard. table 3: thermal dat a symbol parameter so - 8 to - 92 unit r thjc thermal resistance junction - case 20 c/w r thja thermal resistance junction - ambient 55 200 c/w figure 3 : test circuit if the inhibit pin is left floating, the regulator is in on mo de. however, when the inhibit function is not used, it should be grounded to avoid any noise.
electrica l characteristics lexx 6 / 24 docid2573 rev 15 4 electrical characteristics refer to test circuits, t j = 25 c, c i = 0.1 f, c o = 2.2 f unless otherwise specified. table 4: le30ab electrical characteristics symbol parameter test condition min. typ. max. unit v o output voltage i o = 10 ma v i = 5 v 2.970 3 3.030 v i o = 10 ma v i = 5 v t j = - 25 to 85 c 2.940 3.060 v i op erating input voltage i o = 100 ma 18 v i o output current limit 150 ma ? v o line regulation v i = 3.7 to 18 v i o = 0.5 ma 3 15 mv ? v o load regulation v i = 4 v i o = 0.5 to 100 ma 3 15 mv i d quiescent current v i = 4 to 18 v i o = 0 ma on mode 0.5 1 m a v i = 4 to 18 v i o = 100 ma 1.5 3 v i = 6 v off mode 50 100 a svr supply voltage rejection i o = 5 ma v i = 5 1 v f = 120 hz 81 db f = 1 khz 76 f = 10 khz 60 en output noise voltage b = 10 hz to 100 khz 50 v v d dropout volt age i o = 100 ma 0.2 0.4 v i o = 100 ma t j = - 40 to 125 c 0.5 v il control input logic low t j = - 40 to 125 c 0.8 v v ih control input logic high t j = - 40 to 125 c 2 v i i control input current v i = 6 v v c = 6 v 10 a c o output bypass capacit ance esr = 0.1 to 10 ? i o = 0 to 100 ma 2 10 f
lexx electrical characteristics docid2573 rev 15 7 / 24 refer to test circuits, t j = 25 c, c i = 0.1 f, c o = 2.2 f unless otherwise specified. table 5: le30c electrical characteristics symbol parameter test condition min. typ. max. unit v o output voltage i o = 10 ma v i = 5 v 2.940 3 3.060 v i o = 10 ma v i = 5 v t j = - 25 to 85 c 2.880 3.120 v i operating input voltage i o = 100 ma 18 v i o output current limit 150 ma ? v o line regulation v i = 3.7 to 18 v i o = 0.5 ma 3 20 mv ? v o load regulation v i = 4 v i o = 0.5 to 100 ma 3 25 mv i d quiescent current v i = 4 to 18 v i o = 0 ma on mode 0.5 1 ma v i = 4 to 18 v i o = 100 ma 1.5 3 v i = 6 v off mode 50 100 a svr supply voltage rejection i o = 5 ma v i = 5 1 v f = 120 hz 81 db f = 1 khz 76 f = 10 khz 60 en output noise voltage b = 10 hz to 100 khz 50 v v d dropout voltage i o = 100 ma 0.2 0.4 v i o = 100 ma t j = - 40 to 125 c 0.5 v il control input logic low t j = - 40 to 125 c 0.8 v v ih control input logic high t j = - 40 to 125 c 2 v i i control input current v i = 6 v v c = 6 v 10 a c o output bypass capacitance esr = 0.1 to 10 ? i o = 0 to 100 ma 2 10 f
electrical characteristics lexx 8 / 24 docid2573 rev 15 refer to test circuits, t j = 25 c, c i = 0.1 f, c o = 2.2 f unless otherwise specified. table 6: le33c electrical characteristics symbol parameter test condition min. typ. max. unit v o output voltage i o = 1 0 ma v i = 5.3 v 3.234 3.3 3.366 v i o = 10 ma v i = 5.3 v t j = - 25 to 85 c 3.168 3.432 v i operating input voltage i o = 100 ma 18 v i o output current limit 150 ma ? v o line regulation v i = 4 to 18 v i o = 0.5 ma 3 20 mv ? v o load regulation v i = 4.3 v i o = 0.5 to 100 ma 3 25 mv i d quiescent current v i = 4.3 to 18 v i o = 0 ma on mode 0.5 1 ma v i = 4.3 to 18 v i o = 100 ma 1.5 3 v i = 6 v off mode 50 100 a svr supply voltage rejection i o = 5 ma v i = 5.3 1 v f = 120 hz 80 db f = 1 khz 75 f = 10 khz 60 en output noise voltage b = 10 hz to 100 khz 50 v v d dropout voltage i o = 100 ma 0.2 0.4 v i o = 100 ma t j = - 40 to 125 c 0.5 v il control input logic low t j = - 40 to 125 c 0.8 v v ih control input logic high t j = - 40 to 125 c 2 v i i control input current v i = 6 v v c = 6 v 10 a c o output bypass capacitance esr = 0.1 to 10 ? i o = 0 to 100 ma 2 10 f
lexx electrical characteristics docid2573 rev 15 9 / 24 refer to test circuits, t j = 25 c, c i = 0.1 f, c o = 2.2 f unless otherwise specified. table 7: le45c electrical characteristics symbol parameter test condition min. typ. max. unit v o output voltage i o = 1 0 ma v i = 6.5 v 4.41 4.5 4.59 v i o = 10 ma v i = 6.5 v t j = - 25 to 85 c 4.32 4.68 v i operating input voltage i o = 100 ma 18 v i o output current limit 150 ma ? v o line regulation v i = 5.2 to 18 v i o = 0.5 ma 4 30 mv ? v o load regulation v i = 5. 5 v i o = 0.5 to 100 ma 3 25 mv i d quiescent current v i = 5.5 to 18 v i o = 0 ma on mode 0.5 1 ma v i = 5.5 to 18 v i o = 100 ma 1.5 3 v i = 6 v off mode 50 100 a svr supply voltage rejection i o = 5 ma v i = 6.5 1 v f = 120 hz 77 db f = 1 khz 72 f = 10 khz 60 en output noise voltage b = 10 hz to 100 khz 50 v v d dropout voltage i o = 100 ma 0.2 0.4 v i o = 100 ma t j = - 40 to 125 c 0.5 v il control input logic low t j = - 40 to 125 c 0.8 v v ih control input logic high t j = - 40 to 125 c 2 v i i control input current v i = 6 v v c = 6 v 10 a c o output bypass capacitance esr = 0.1 to 10 ? i o = 0 to 100 ma 2 10 f
electri cal characteristics lexx 10 / 24 docid2573 rev 15 refer to test circuits, t j = 25 c, c i = 0.1 f, c o = 2.2 f unless otherwise specified. table 8: le50ab electrical characteristics symbol parameter test condition min. typ. max. unit v o output voltage i o = 10 ma v i = 7 v 4.95 5 5.05 v i o = 10 ma v i = 7 v t j = - 25 to 85 c 4.9 5.1 v i operating input voltage i o = 100 ma 18 v i o output current limit 150 350 425 ma ? v o line regulation v i = 5.7 to 18 v i o = 0.5 ma 4 20 mv ? v o load regulation v i = 6 v i o = 0.5 to 100 ma 3 15 mv i d quiescent current v i = 6 to 18 v i o = 0 ma on mode 0.5 1 ma v i = 6 to 18 v i o = 100 ma 1.5 3 v i = 6 v off mode 50 100 a svr supply voltage rejection i o = 5 ma v i = 7 1 v f = 120 hz 76 db f = 1 khz 71 f = 10 khz 60 en output noise voltage b = 10 hz to 100 khz 50 v v d dropout voltage i o = 100 ma 0.2 0.4 v i o = 100 ma t j = - 40 to 125 c 0.5 v il control input logic low t j = - 40 to 125 c 0.8 v v ih control input logic high t j = - 40 t o 125 c 2 v i i control input current v i = 6 v v c = 6 v 10 a c o output bypass capacitance esr = 0.1 to 10 ? i o = 0 to 100 ma 2 10 f
lexx electrical characteristics docid2573 rev 15 11 / 24 refer to test circuits, t j = 25 c, c i = 0.1 f, c o = 2.2 f unless otherwise specified. table 9: le50c electrical characteristics symbol parameter test condition min. typ. max. unit v o output voltage i o = 1 0 ma v i = 7 v 4.9 5 5.1 v i o = 10 ma v i = 7 v t j = - 25 to 85 c 4.8 5.2 v i operating input voltage i o = 100 ma 18 v i o output current limit 150 350 425 ma ? v o line regulation v i = 5.7 to 18 v i o = 0.5 ma 4 30 mv ? v o load regulation v i = 6 v i o = 0.5 to 100 ma 3 25 mv i d quiescent current v i = 6 to 18 v i o = 0 ma on mode 0.5 1 ma v i = 6 to 18 v i o = 100 ma 1.5 3 v i = 6 v off mode 50 100 a svr supply voltage rejection i o = 5 ma v i = 7 1 v f = 120 hz 76 db f = 1 khz 71 f = 10 khz 60 en output noise voltage b = 10 hz to 100 khz 50 v v d dropout voltage i o = 100 ma 0.2 0.4 v i o = 100 ma t j = - 40 to 125 c 0.5 v il control input logic low t j = - 40 to 125 c 0.8 v v ih control input logic high t j = - 40 to 1 25 c 2 v i i control input current v i = 6 v v c = 6 v 10 a c o output bypass capacitance esr = 0.1 to 10 ? i o = 0 to 100 ma 2 10 f
electrical characteristics lexx 12 / 24 docid2573 rev 15 refer to test circuits, t j = 25 c, c i = 0.1 f, c o = 2.2 f unless otherwise specified. table 10: le80c electrical characteristics symbol parameter test condition min. typ. max. unit v o output voltage i o = 10 ma v i = 10 v 7.84 8 8.16 v i o = 10 ma v i = 10 v t j = - 25 to 85 c 7.68 8.32 v i operating input voltage i o = 100 ma 18 v i o output current limit 150 ma ? v o line regulation v i = 8.7 to 18 v i o = 0.5 ma 5 35 mv ? v o load regulation v i = 9 v i o = 0.5 to 100 ma 3 25 mv i d quiescent current v i = 9 to 18 v i o = 0 ma on mode 0.7 1.6 ma v i = 9 to 18 v i o = 100 ma 1.7 3.6 v i = 9 v off mode 70 140 a svr supply voltage rejection i o = 5 ma v i = 10 1 v f = 120 hz 72 db f = 1 khz 6 6 f = 10 khz 57 en output noise voltage b = 10 hz to 100 khz 50 v v d dropout voltage i o = 100 ma 0.2 0.4 v i o = 100 ma t j = - 40 to 125 c 0.5 v il control input logic low t j = - 40 to 125 c 0.8 v v ih control input logic high t j = - 4 0 to 125 c 2 v i i control input current v i = 9 v v c = 6 v 10 a c o output bypass capacitance esr = 0.1 to 10 ? i o = 0 to 100 ma 2 10 f
lexx typical performance characteristics docid2573 rev 15 13 / 24 5 typical performance characteristics unless otherwise specified, v o(nom) = 3.3 v. figure 4 : dropout voltage vs output current figure 5 : dropout voltage vs temperature figure 6 : shutdown current vs temperature figure 7 : supply current vs input voltage
typical performance characteristics lexx 14 / 24 docid2573 rev 15 figur e 8 : short - circuit current vs dropout voltage figure 9 : svr vs frequency figure 10 : logic - controlled precision 3.3/5.0 v selectable output
lexx typical performance characteristics docid2573 rev 15 15 / 24 figure 11 : sequential multi - output supply figure 12 : basic inhibit functions
package information lexx 16 / 24 docid2573 rev 15 6 package information in order to meet environmental requirements, st offers these d evices 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. 6.1 so - 8 package information figure 13 : so - 8 package outline
lexx package in formation docid2573 rev 15 17 / 24 table 11: so - 8 mechanical data dim. mm min. typ. max. a 1.75 a1 0.10 0.25 a2 1.25 b 0.31 0.51 b1 0.28 0.48 c 0.10 0.25 c1 0.10 0.23 d 4.80 4.90 5.00 e 5.80 6.00 6.20 e1 3.80 3.90 4.00 e 1.27 h 0.25 0.50 l 0.40 1.27 l1 1.04 l2 0.25 k 0 8 ccc 0.10 figure 14 : so - 8 recommended footprint (dimensions are in mm)
package information lexx 18 / 24 docid2573 rev 15 6.2 so - 8 packing information figure 15 : so - 8 tape and reel dimensions table 12: so - 8 tape and reel mechanical data dim. mm min. typ. max. a - 330 c 12.8 13.2 d 20.2 n 60 t 22.4 ao 8.1 8.5 bo 5.5 5.9 ko 2.1 2.3 po 3.9 4.1 p 7.9 8.1
lexx package information docid2573 rev 15 19 / 24 6.3 to - 92 packing information figure 16 : to - 92 tape and reel outline
package information lexx 20 / 24 docid2573 rev 15 table 13: to - 92 tape and reel mechanical data dim. mm min. typ. max. a1 4.80 t 3.80 t1 1.60 t2 2.30 d 0.45 0.47 0.48 p0 12.50 12.70 12.90 p2 5.65 6.35 7.05 f1, f2 2.40 2.50 2.94 f3 4.9 8 5.08 5.48 delta h - 2.00 2.00 w 17.50 18.00 19.00 w0 5.5 6.00 6.5 w1 8.50 9.00 9.25 w2 0.50 h 18.50 21 h3 0.5 1 2 h0 15.50 16.00 18.8 h1 25.0 27.0 d0 3.80 4.00 4.20 t 0.90 l 11.00 i1 3.00 delta p - 1.00 1.00 ?1 352 355 358 ?2 28 30 32 u 44 47 50
lexx package information docid2573 rev 15 21 / 24 6.4 to - 92 ammopak packing information figure 17 : to - 92 ammopak tape and reel outline
package information lexx 22 / 24 docid2573 rev 15 table 14: to - 92 ammopak tape and r eel mechanical data dim. mm min. typ. max. a1 4.80 t 3.80 t1 1.60 t2 2.30 d 0.45 0.47 0.48 p0 12.50 12.70 12.90 p2 5.65 6.35 7.05 f1, f2 2.40 2.50 2.94 f3 4.98 5.08 5.48 delta h - 2.00 2.00 w 17.50 18.00 19.00 w0 5.5 6.00 6.5 w1 8.50 9.00 9.25 w2 0.50 h 18.50 21 h3 0.5 1 2 h0 15.50 16.00 18.8 h1 25.0 27.0 d0 3.80 4.00 4.20 t 0.90 l 11.00 i1 3.00 delta p - 1.00 1.00
lexx revision history docid2573 rev 15 23 / 24 7 revision history tab le 15: document revision history date revision changes 09 - jul - 2004 6 i o typ. and max. are changed in tab. 24 and 25 - pag. 14. 16 - mar - 2005 7 add tape & reel for to - 92 - note on table 3. 12 - feb - 2007 8 change value t op on table 2. 26 - jul - 2007 9 add table 1 in cover page. 29 - nov - 2007 10 modified: table 25. 12 - feb - 2008 11 modified: table 25. 10 - jul - 2008 12 modified: table 1 and table 25. 22 - may - 2012 13 updated: table 1 on page 1. changed: ta in tj test conditions from table 4 to table 10. 14 - mar - 2014 1 4 changed the part numbers lexxab and lexxc to lexx. updated the title. added the ammopack package to the figure in cover page. updated the table 1: device summary. updated the description. updated figure 3. changed the title of figure 6. updated mechanica l data. 03 - may - 2017 15 updated table 1: "device summary" and section 6: "package information" . minor text changes.
lexx 24 / 24 docid2573 rev 15 important notice C please read carefully stmicroelectronics nv and its subsidiaries (st) reserve the right to make changes, corrections, enhancements, modifications , and improvements to st products and/or to this document at any time w ithout notice. purchasers should obtain the latest relevant information on st products before placing orders. st products are sold pursuant to sts terms and conditions of sale in place at the time of or der acknowledgement. purchasers are solely respons ible for the choice, selection, and use of st products and st assumes no liability for application assistance or the design of purchasers products. no license, express or implied, to any intellectual property right is granted by st herein. resale of st products with provisions different from the information set forth herein shall void any warranty granted by st f or such product. st and the st logo are trademarks of st. all other product or service names are the property of their respective owners. information in this document supersedes and replaces information previously supplied in any prior versions of this document. ? 2017 stmicroelectronics C all rights reserved

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