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february 2016 docid2511 rev 18 1 / 24 this is information on a product in full production. www.st.com L79L negative voltage regulators datasheet - production data features ? output current up to 100 ma ? output voltages of - 5; - 8; - 12; - 15 v ? thermal overload protection ? short - circuit protection ? no external components are required ? available in 5% (ac) or 10% (c) selection description the L79L series of three - terminal negative regulators employ internal current limiting and thermal shutdown, making them essentially indestructible. if adequate heat - sink is provided, they can deliver up to 100 ma output current. they are intended as fixe d voltage regulators in a wide range of applications including local or on - card regulation for elimination of noise and distribution problems associated with single - point regulation. in addition, they can be used with power pass elements to make high - curre nt voltage regulators. the L79L series used as zener diode/resistor combination replacement, offers an effective output impedance improvement of typically two orders of magnitude, along with lower quiescent current and lower noise.
contents L79L 2 / 24 docid2511 rev 18 contents 1 diagram ................................ ................................ ............................ 3 2 pin configuration ................................ ................................ ............. 4 3 max imum ratings ................................ ................................ ............. 5 4 electrical characteristics ................................ ................................ 6 5 package information ................................ ................................ ..... 10 5.1 to - 92 package information ................................ ............................. 10 5.2 to - 92 packing infor mation ................................ .............................. 11 5.3 to - 92 ammopak package information ................................ ............ 13 5.4 so - 8 package information ................................ .............................. 15 5.5 so - 8 packing information ................................ ................................ 17 5.6 sot - 89 package inform ation ................................ .......................... 18 5.7 sot - 89 packing information ................................ ............................ 21 6 ordering information ................................ ................................ ..... 22 7 revision history ................................ ................................ ............ 23
L79L diagram docid2511 rev 18 3 / 24 1 diagram figure 1 : schematic diagram
pin configuration L79L 4 / 24 docid2511 rev 18 2 pin configuration figure 2 : pin connection (top view, bottom view for to - 92) figure 3 : test circuit
L79L maximum ratings docid2511 rev 18 5 / 24 3 maximum ratings table 1: absolute maximum ratings symbol parameter value unit v i dc input voltage v o = - 5 to - 9 v - 30 v v o = - 12 to - 15 v - 35 i o output current 100 ma p d power dissipation internally limited (1) mw t stg storage temperature range - 40 to 150 c t op operating junction temperature range for L79Lxxac 0 to 125 c for L79Lxxab - 40 to 125 notes: (1) our so - 8 package used for voltage regulators is modified internally to have pins 2, 3, 6 and 7 electrically communed to the die attach flag. this particular 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 heat - sinking. the external dimensions are the same as for the standard so - 8. table 2: thermal data symbol parameter so - 8 to - 92 sot - 89 unit r thjc thermal resistance junction - case (max) 20 15 c/w r thja thermal resistance junction - ambient (max) 55 (1) 200 115 c/w notes: (1) considering 6 cm 2 of copper board heat - sink.
electrical characteristics L79L 6 / 24 docid2511 rev 18 4 electrical characteristics refer to the test circuits, v i = - 10 v, i o = 40 ma, c i = 0.33 f, c o = 0.1 f, t j = 0 to 125 c for L79L05ac, t j = - 40 to 125 c for L79L05ab, unless otherwise speci fied. table 3: electrical characteristics of L79L05ac and L79L05ab symbol parameter test conditions min. typ. max. unit v o output voltage t j = 25 c - 4.8 - 5 - 5.2 v v o output voltage i o = 1 to 40 ma, v i = - 7 to - 20 v - 4.75 - 5.25 v i o = 1 to 70 ma, v i = - 10 v - 4.75 - 5.25 ? v o line regulation v i = - 7 to - 20 v, t j = 25 c 150 mv v i = - 8 to - 20 v, t j = 25 c 100 ? v o load regulation i o = 1 to 100 ma, t j = 25 c 60 mv i o = 1 to 40 ma, t j = 25 c 30 i d quiescent current t j = 25 c 6 ma t j = 125 c 5.5 ma ? i d quiescent current change i o = 1 to 40 ma 0.1 ma v i = - 8 to - 20 v 1.5 en output noise voltage b = 10 hz to 100 khz, t j = 25 c 40 v svr supply voltage rejection v i = - 8 to - 18 v, f = 120 hz i o = 40 ma, t j = 25 c 41 49 db v d dropout voltage 1.7 v
L79L electrical characteristics docid2511 rev 18 7 / 24 refer to the test circuits, v i = - 14 v, i o = 40 ma, c i = 0.33 f, c o = 0.1 f, t j = 0 to 125 c for L79L08ac t j = - 40 to 125 c for L79L08ab, unless otherwise specified. table 4: electrical characteristics of L79L08ac and L79L08ab symbol parameter test conditions min. typ. max. unit v o output voltage t j = 25 c - 7.68 - 8 - 8.32 v v o output voltage i o = 1 to 40 ma, v i = - 10.5 to - 23 v - 7.6 - 8.4 v i o = 1 to 70 ma, v i = - 14 v - 7.6 - 8.4 ? v o line regulation v i = - 10.5 to - 23 v, t j = 25 c 175 mv v i = - 11 to - 23 v, t j = 25 c 125 ? v o load regulation i o = 1 to 100 ma, t j = 25 c 80 mv i o = 1 to 40 ma, t j = 25 c 40 i d quiescent current t j = 25 c 6 ma t j = 125 c 5.5 ma ? i d quiescent current change i o = 1 to 40 ma 0.1 ma v i = - 11 to - 23 v 1.5 en output noise voltage b = 10 hz to 100 khz, t j = 25 c 60 v svr supply voltage rejection v i = - 12 to - 23 v, f = 120 hz, i o = 40 ma, t j = 25 c 37 45 db v d dropout voltage 1.7 v
electrical characteristics L79L 8 / 24 docid2511 rev 18 refer to the test circuits, v i = - 19 v, i o = 40 ma, c i = 0.33 f, c o = 0.1 f, t j = 0 to 125 c for L79L12ac, t j = - 40 to 125 c for L79L12ab, unless otherwise specified. table 5: electrical characteristics of L79L12ac and L79L12ab symbol parameter test conditions min. typ. max. unit v o output voltage t j = 25c - 11.5 - 12 - 12.5 v v o output voltage i o = 1 to 40 ma, v i = - 14.5 to - 27 v - 11.4 - 12.6 v i o = 1 to 70 ma, v i = - 19 v - 11.4 - 12.6 ? v o line regulation v i = - 14.5 to - 27 v, t j = 25 c 250 mv v i = - 16 to - 27 v, t j = 25 c 200 ? v o load regulation i o = 1 to 100 ma, t j = 25 c 100 mv i o = 1 to 40 ma, t j = 25 c 50 i d quiescent current t j = 25 c 6.5 ma t j = 125 c 6 ma ? i d quiescent current change i o = 1 to 40 ma 0.1 ma v i = - 16 to - 27 v 1.5 en output noise voltage b = 10 hz to 100 khz, t j = 25 c 80 v svr supply voltage rejection v i = - 15 to - 25 v, f = 120 hz i o = 40 ma, t j = 25 c 37 42 db v d dropout voltage 1.7 v
L79L electrical characteristics docid2511 rev 18 9 / 24 refer to the test circuits, v i = - 23 v, i o = 40 ma, c i = 0.33 f, c o = 0.1 f, t j = 0 to 125 c for L79L15ac, t j = - 40 to 125 c for L79L15ab, unless otherwise specified. table 6: electrical characteristics of L79L15ac and L79L15ab symbol parameter test conditions min. typ. max. unit v o output voltage t j = 25c - 14.4 - 15 - 15.6 v v o output voltage i o = 1 to 40 ma, v i = - 17.5 to - 30 v - 14.25 - 15.75 v i o = 1 to 70 ma, v i = - 23 v - 14.25 - 15.75 ? v o line regulation v i = - 17.5 to - 30 v, t j = 25 c 300 mv v i = - 20 to - 30 v, t j = 25 c 250 ? v o load regulation i o = 1 to 100 ma, t j = 25 c 150 mv i o = 1 to 40 ma, t j = 25 c 75 i d quiescent current t j = 25 c 6.5 ma t j = 125 c 6 ma ? i d quiescent current change i o = 1 to 40 ma 0.1 ma v i = - 20 to - 30 v 1.5 en output noise voltage b = 10 hz to 100 khz, t j = 25 c 90 v svr supply voltage rejection v i = - 18.5 to - 28.5.v, f = 120 hz i o = 40 ma, t j = 25 c 34 39 db v d dropout voltage 1.7 v
package information L79L 10 / 24 docid2511 rev 18 5 package information in order to meet environmental requirements, st offers these devices in different grades of ecopack ? packages, depending on their level of environmental compliance. ecopack ? speci fications, grade definitions and product status are available at: www.st.com . ecopack ? is an st trademark. 5.1 to - 92 package information figure 4 : to - 92 package outline table 7: to - 92 mechanical data dim. mm min. typ. max. a 4.32 4.95 b 0.36 0.51 d 4.45 4.95 e 3.30 3.94 e 2.41 2.67 e1 1.14 1.40 l 12.70 15.49 r 2.16 2.41 s1 0.92 1.52 w 0.41 0.56 v 5
L79L package information docid2511 rev 18 11 / 24 5.2 to - 92 packing information figure 5 : to - 92 tape and reel outline
package information L79L 12 / 24 docid2511 rev 18 table 8: 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 5.5 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
L79L package information docid2511 rev 18 13 / 24 5.3 to - 92 ammopak package information figure 6 : to - 92 ammopak tape and reel outline
package information L79L 14 / 24 docid2511 rev 18 table 9: to - 92 ammopak 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 5.5 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
L79L package information docid2511 rev 18 15 / 24 5.4 so - 8 package information figure 7 : so - 8 package outline
package information L79L 16 / 24 docid2511 rev 18 table 10: 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 8 : so - 8 recommended footprint (dimensions are in mm)
L79L package information docid2511 rev 18 17 / 24 5.5 so - 8 packing information figure 9 : so - 8 tape and reel dimensions table 11: 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
package information L79L 18 / 24 docid2511 rev 18 5.6 sot - 89 package information figure 10 : sot - 89 package outline
L79L package information docid2511 rev 18 19 / 24 table 12: sot - 89 mechanical data dim. mm min. typ. max. a 1.40 1.60 b 0.44 0.56 b1 0.36 0.48 c 0.35 0.44 c1 0.35 0.44 d 4.40 4.60 d1 1.62 1.83 d3 0.90 e 2.29 2.60 e 1.42 1.57 e1 2.92 3.07 h 3.94 4.25 h1 2.70 3.10 k 1 8 l 0.89 120 r 0.25 90
package information L79L 20 / 24 docid2511 rev 18 figure 11 : sot - 89 recommended footprint
L79L package information docid2511 rev 18 21 / 24 5.7 sot - 89 packing information figure 12 : sot - 89 carrier tape outline table 13: sot - 89 carrier tape mechanical data dim. mm value tolerance ao 4.91 0.10 bo 4.52 0.10 ko 1.90 0.10 f 5.50 0.10 e 1.75 0.10 w 12 0.30 p2 2 0.10 po 4 0.10 p1 8 0.10 t 0.30 0.10 d ? 1.55 0.05 d1 ? 1.60 0.10
ordering information L79L 22 / 24 docid2511 rev 18 6 ordering information table 14: order codes so - 8 to - 92 (bag) to - 92 (ammopak) to - 92 (tape and reel) sot - 89 output voltage (v) L79L05abd13tr L79L05acz L79L05abz - ap L79L05abutr - 5 L79L05acd13tr L79L08acz - ap L79L05acz - tr L79L05acutr - 5 L79L08acd13tr - 8 L79L12acd13tr L79L12acz - tr L79L12acutr - 12 L79L15abd13tr - 15 L79L15acd13tr L79L15acutr - 15
L79L revision histo ry docid2511 rev 18 23 / 24 7 revision history table 15: document revision history date revision changes 14 - mar - 2005 9 add tape and reel for to - 92. 15 - mar - 2005 10 add note on table 3. 23 - dec - 2005 11 mistake on ordering table in header. 12 - sep - 2006 12 order codes updated. 25 - jul - 2007 13 pin connection for sot - 89 updated on figure 2. 04 - dec - 2007 14 modified: table 14. 14 - jul - 2008 15 modified: table 14 on page 24. 29 - jul - 2009 16 modified: table 14 on page 24. 17 - apr - 2014 17 part numbers L79Lxxab, l78lxxac, l78lxxc changed to L79L. removed table 1: device summary. updated the features and description in cover page. updated figure 1: schematic diagram, table 1: absolute maximum ratings and table 14: order codes. added section 5: packaging mechanical data. minor text changes. 12 - feb - 2016 18 updated section 5: package information . minor text changes.
L79L 24 / 24 docid2511 rev 18 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 without 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 responsible for the choice, selection, and use of st products and s t 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 se t forth herein shall void any warranty granted by st for 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. ? 2016 stmicroelectronics C all rights reserved

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