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this is information on a product in full production. march 2014 docid2573 rev 14 1/27 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 suitable 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 when 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, reducing the component size and cost. so-8 to-92 1 2 3 to-92 tape and reel bag ammopack table 1. device summary order codes output voltages so-8 to-92 (bag) to-92 (ammopack) to-92 (tape and reel) le30abz-tr 3 v le30cd-tr 3 v le33cd-tr le33cz le33cz-ap le33cz-tr 3.3 v le45cd-tr 4.5 v le50abd-tr le33abz-ap 5 v le50cd-tr 5 v le80cd-tr 8 v www.st.com
contents LEXX 2/27 docid2573 rev 14 contents 1 diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5 typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 6 package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 7 packaging information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 8 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
docid2573 rev 14 3/27 LEXX diagram 27 1 diagram figure 1. block diagram
pin configuration LEXX 4/27 docid2573 rev 14 2 pin configuration figure 2. pin connections (so-8 top view, to-92 bottom view) to-92 so-8 pin 1 = v out pin 2 = gnd pin 3 = v in
docid2573 rev 14 5/27 LEXX maximum ratings 27 3 maximum ratings figure 3. test circuit note: if the inhibit pin is left floating, the regulator is in on mode. however, when the inhibit function is not used, it should be grounded to avoid any noise. table 2. absolute maximum ratings symbol parameter value unit v i dc input voltage 20 v i o output current internally limited (1) 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 decreas es the total thermal resistance of the package and increases its ability to dissipate power when an appropr iate area of copper on the printed circuit board is available for heatsinking. the external di mensions are the same as so-8 standard. p tot power dissipation internally limited t stg storage temperature range -65 to 150 c t op operating junction temperature range -40 to 125 c table 3. thermal data 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 LEXX
electrical characteristics LEXX 6/27 docid2573 rev 14 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 conditions 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 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 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 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
docid2573 rev 14 7/27 LEXX electrical characteristics 27 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 conditions 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 8/27 docid2573 rev 14 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 conditions min. typ. max. unit v o output voltage i o = 10 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
docid2573 rev 14 9/27 LEXX electrical characteristics 27 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 conditions min. typ. max. unit v o output voltage i o = 10 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
electrical characteristics LEXX 10/27 docid2573 rev 14 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 conditions 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 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
docid2573 rev 14 11/27 LEXX electrical characteristics 27 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 conditions min. typ. max. unit v o output voltage i o = 10 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 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 12/27 docid2573 rev 14 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 conditions 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 66 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 = -40 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
docid2573 rev 14 13/27 LEXX typical performance characteristics 27 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 14/27 docid2573 rev 14 figure 8. short-circuit current vs. dropout voltage figure 9. svr vs. frequency figure 10. logic-controlled precision 3.3/5.0 v selectable output
docid2573 rev 14 15/27 LEXX typical performance characteristics 27 figure 11. sequential multi-output supply figure 12. basic inhibit functions LEXX LEXX LEXX LEXX
package mechanical data LEXX 16/27 docid2573 rev 14 6 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 13. so-8 drawings 0016023_g_fu
docid2573 rev 14 17/27 LEXX package mechanical data 27 table 11. so-8 mechanical data dim. mm min. typ. max. a 1.75 a1 0.10 0.25 a2 1.25 b0.31 0.51 b1 0.28 0.48 c0.10 0.25 c1 0.10 0.23 d4.804.905.00 e5.806.006.20 e1 3.80 3.90 4.00 e1.27 h0.25 0.50 l0.40 1.27 l1 1.04 l2 0.25 k0 8 ccc 0.10
package mechanical data LEXX 18/27 docid2573 rev 14 figure 14. so-8 recommended footprint footprint_0016023_g_fu
docid2573 rev 14 19/27 LEXX package mechanical data 27 figure 15. to-92 bag drawings table 12 to-92 bag mechanical data dim. mm min. typ. max. a4.32 4.95 b0.36 0.51 d4.45 4.95 e3.30 3.94 e2.41 2.67 e1 1.14 1.40 l 12.70 15.49 r2.16 2.41 s1 0.92 1.52 w0.41 0.56 v5 0102782 d
packaging information LEXX 20/27 docid2573 rev 14 7 packaging information figure 16. so-8 tape and reel drawings
docid2573 rev 14 21/27 LEXX packaging information 27 table 13 so-8 tape and reel mechanical data dim. mm min. typ. max. a 330 c 12.8 13.2 d20.2 n60 t 22.4 ao 8.1 8.5 bo 5.5 5.9 ko 2.1 2.3 po 3.9 4.1 p7.9 8.1
packaging information LEXX 22/27 docid2573 rev 14 figure 17. to-92 tape and reel drawings w w1 w0 w2 a1 d d0 h1 h h0 l l1 f1 f2 p2 p0 delta p t2 t1 delta h t t
docid2573 rev 14 23/27 LEXX packaging information 27 table 14. 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 4.98 5.08 5.48 delta h -2.00 2.00 w 17.50 18.00 19.00 w0 5.56.006.5 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 l1 3.00 delta p -1.00 1.00 ?1 352 355 358 ?2 28 30 32 u444750
packaging information LEXX 24/27 docid2573 rev 14 figure 18. to-92 ammopack w w1 w0 w2 a 1 d d0 h1 h h0 l l1 f1 f2 p2 p0 delta h t2 t1 t t f3 h3 0050910s_rev_u
docid2573 rev 14 25/27 LEXX packaging information 27 table 15. to-92 ammopack 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 5.56.006.5 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 l1 3.00 delta p -1.00 1.00
revision history LEXX 26/27 docid2573 rev 14 8 revision history table 16. 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: t a in t j test conditions from table 4 to table 10. 14-mar-2014 14 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 mechanical data.
docid2573 rev 14 27/27 LEXX 27 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. st products are not designed or authorized for use in: (a) safety critical applications such as life supporting, active implanted devices or systems with product functional safety requirements; (b) aeronautic applications; (c) automotive applications or environments, and/or (d) aerospace applications or environments. where st products are not designed for such use, the purchaser shall use products at purchaser?s sole risk, even if st has been informed in writing of such usage, unless a product is expressly designated by st as being intended for ?automotive, automotive safety or medical? industry domains according to st product design specifications. products formally escc, qml or jan qualified are deemed suitable for use in aerospace by the corresponding governmental agency. resale of st products with provisions different from the statem ents 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. ? 2014 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 - swed en - switzerland - united kingdom - united states of america www.st.com

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