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d r a ft this is information on a product in full production. 19 march 2014 docid4337 rev 13 1/21 KFXX very low drop voltage regulators with inhibit datasheet - production data features ? very low dropout voltage (0.4 v) ? very low quiescent current (typ. 50 a in off mode, 500 a in on mode) ? output current up to 500 ma ? logic-controlled electronic shutdown ? output voltages of 2.5; 3.3; 5; 8 v ? internal current and thermal limit ? only 2.2 f for stability ? available in 2 % accuracy at 25 c ? supply voltage rejection: 70 db (typ.) ? temperature range: - 40 to 125 c description the kf series are very low drop regulators available in so-8 and dpak packages and in a wide range of output voltages. the very low dropout voltage (0.4 v) and the very low quiescent current make them particularly suitable for low noise, low power applications and especially in battery powered systems. a shutdown logic control function is available (pin 5, ttl compatible). this means that when the device is used as a local regulator, it is possible to put a part of the board in standby, decreasing the total power consumption. it requires only a 2.2 f capacitor for stability allowing space and cost saving. dpak so-8 table 1. device summary order codes output voltages so-8 (tape and reel) dpak (tape and reel) kf25bd-tr kf25bdt-tr 2.5 v kf33bd-tr kf33bdt-tr 3.3 v kf50bd-tr kf50bdt-tr 5 v kf80bdt-tr 8 v www.st.com
d r a ft contents KFXX 2/21 docid4337 rev 13 contents 1 diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5 typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 6 package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 7 packaging mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 8 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
docid4337 rev 13 3/21 d r a ft KFXX diagram 21 1 diagram figure 1. schematic diagram
d r a ft pin configuration KFXX 4/21 docid4337 rev 13 2 pin configuration figure 2. pin connections (top view) dpak so-8
docid4337 rev 13 5/21 d r a ft KFXX maximum ratings 21 3 maximum ratings note: absolute maximum ratings are those values beyond which damage to the device may occur. functional operation under these condition is not implied. table 2. absolute maximum ratings symbol parameter value unit v i dc input voltage - 0.5 to 20 v i o output current internally limited p tot power dissipation internally limited t stg storage temperature range - 40 to 150 c t op operating junction temperature range - 40 to 125 c table 3. thermal data symbol parameter dpak so-8 unit r thjc thermal resistance junction-case 8 20 c/w r thja thermal resistance junction-ambient 100 55 c/w figure 3. test circuit
d r a ft electrical characteristics KFXX 6/21 docid4337 rev 13 4 electrical characteristics refer to the test circuits, t j = 25 c, c i = 0.1 f, c o = 2.2 f unless otherwise specified. table 4. electrical characteristics (v o = 2.5 v) symbol parameter test conditions min. typ. max. unit v o output voltage i o = 50 ma, v i = 4.5 v 2.45 2.5 2.55 v i o = 50 ma, v i = 4.5 v, t a = -25 to 85c 2.4 2.6 v i operating input voltage i o = 500 ma 20 v i o output current limit 1 a v o line regulation v i = 3.5 to 20 v, i o = 5 ma 2 12 mv v o load regulation v i = 3.8 v, i o = 5 to 500 ma 2 50 mv i d quiescent current v i = 3.5 to 20v, i o = 0ma on mode 0.5 1 ma v i = 3.8 to 20v, i o =500ma 12 v i = 6 v off mode 50 100 a svr supply voltage rejection i o = 5 ma, v i = 4.5 1 v f = 120 hz 82 db f = 1 khz 77 f = 10 khz 60 en output noise voltage b = 10 hz to 100 khz 50 v v d dropout voltage i o = 200 ma 0.2 0.35 v i o = 500 ma 0.4 0.7 v il control input logic low t a = -40 to 125c 0.8 v v ih control input logic high t a = -40 to 125c 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 500 ma 2 10 f
docid4337 rev 13 7/21 d r a ft KFXX electrical characteristics 21 refer to the test circuits, t j = 25 c, c i = 0.1 f, c o = 2.2 f unless otherwise specified. table 5. electrical characteristics (v o = 3.3 v) symbol parameter test conditions min. typ. max. unit v o output voltage i o = 50 ma, v i = 5.3 v 3.234 3.3 3.366 v i o = 50 ma, v i = 5.3 v, t a = -25 to 85c 3.168 3.432 v i operating input voltage i o = 500 ma 20 v i o output current limit 1 a v o line regulation v i = 4.3 to 20 v, i o = 5 ma 2 12 mv v o load regulation v i = 4.6 v, i o = 5 to 500 ma 2 50 mv i d quiescent current v i = 4.3 to 20v, i o = 0ma on mode 0.5 1 ma v i = 4.6 to 20v, i o =500ma 12 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 = 200 ma 0.2 0.35 v i o = 500 ma 0.4 0.7 v il control input logic low t a = -40 to 125c 0.8 v v ih control input logic high t a = -40 to 125c 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 500 ma 2 10 f
d r a ft electrical characteristics KFXX 8/21 docid4337 rev 13 refer to the test circuits, t j = 25 c, c i = 0.1 f, c o = 2.2 f unless otherwise specified. table 6. electrical characteristics (v o = 5 v) symbol parameter test conditions min. typ. max. unit v o output voltage i o = 50 ma, v i = 7 v 4.9 5 5.1 v i o = 50 ma, v i = 7 v, t a = -25 to 85c 4.8 5.2 v i operating input voltage i o = 500 ma 20 v i o output current limit 1 a v o line regulation v i = 6 to 20 v, i o = 5 ma 3 18 mv v o load regulation v i = 6.3 v, i o = 5 to 500 ma 2 50 mv i d quiescent current v i = 6 to 20v, i o = 0ma on mode 0.5 1 ma v i = 6.3 to 20v, i o =500ma 12 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 = 200 ma 0.2 0.35 v i o = 500 ma 0.4 0.7 v il control input logic low t a = -40 to 125c 0.8 v v ih control input logic high t a = -40 to 125c 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 500 ma 2 10 f
docid4337 rev 13 9/21 d r a ft KFXX electrical characteristics 21 refer to the test circuits, t j = 25 c, c i = 0.1 f, c o = 2.2 f unless otherwise specified. table 7. electrical characteristics (v o = 8 v) symbol parameter test conditions min. typ. max. unit v o output voltage i o = 50 ma, v i = 10 v 7.84 8 8.16 v i o = 50 ma, v i = 10 v, t a = -25 to 85c 7.68 8.32 v i operating input voltage i o = 500 ma 20 v i o output current limit 1 a v o line regulation v i = 9 to 20 v, i o = 5 ma 4 24 mv v o load regulation v i = 9.3 v, i o = 5 to 500 ma 2 50 mv i d quiescent current v i = 9 to 20v, i o = 0ma on mode 0.7 1.5 ma v i = 9.3 to 20v, i o =500ma 12 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 67 f = 10 khz 60 en output noise voltage b = 10 hz to 100 khz 50 v v d dropout voltage i o = 200 ma 0.2 0.35 v i o = 500 ma 0.4 0.7 v il control input logic low t a = -40 to 125c 0.8 v v ih control input logic high t a = -40 to 125c 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 500 ma 2 10 f
d r a ft typical performance characteristics KFXX 10/21 docid4337 rev 13 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. supply current vs. input voltage (i out = 500 ma) figure 7. supply current vs. input voltage (i out = 0 ma) figure 8. short circuit current vs. input voltage figure 9. svr vs. output current (f= 120 hz)
docid4337 rev 13 11/21 d r a ft KFXX package mechanical data 21 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.
d r a ft package mechanical data KFXX 12/21 docid4337 rev 13 figure 10. dpak (to-252) type a drawing 0068772_m_type_a
docid4337 rev 13 13/21 d r a ft KFXX package mechanical data 21 table 8. dpak (to-252) type a mechanical data dim. mm min. typ. max. a2.20 2.40 a1 0.90 1.10 a2 0.03 0.23 b0.64 0.90 b4 5.20 5.40 c0.45 0.60 c2 0.48 0.60 d6.00 6.20 d1 5.10 e6.40 6.60 e1 4.70 e2.28 e1 4.40 4.60 h 9.35 10.10 l1.00 1.50 (l1) 2.80 l2 0.80 l4 0.60 1.00 r0.20 v2 0 8
d r a ft package mechanical data KFXX 14/21 docid4337 rev 13 figure 11. dpak (to-252) type a footprint (a) a. all dimensions are in millimeters footprint_rev_m_type_a
docid4337 rev 13 15/21 d r a ft KFXX package mechanical data 21 figure 12. so-8 drawing table 9. 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 0016023_g_fu
d r a ft package mechanical data KFXX 16/21 docid4337 rev 13 figure 13. so-8 recommended footprint (b) k0 8 ccc 0.10 b. all dimensions are in millimeters. table 9. so-8 mechanical data (continued) dim. mm min. typ. max. footprint_0016023_g_fu
docid4337 rev 13 17/21 d r a ft KFXX packaging mechanical data 21 7 packaging mechanical data figure 14. tape for dpak (to-252) p1 a0 d1 p0 f w e d b0 k0 t user direction of feed p2 10 pitches cumulative tolerance on tape +/- 0.2 mm user direction of feed r bending radius b1 for machine ref. only including draft and radii concentric around b0 am08852v1 top cover tape
d r a ft packaging mechanical data KFXX 18/21 docid4337 rev 13 figure 15. reel for dpak (to-252) table 10. dpak (to-252) tape and reel mechanical data tape reel dim. mm dim. mm min. max. min. max. a0 6.8 7 a 330 b0 10.4 10.6 b 1.5 b1 12.1 c 12.8 13.2 d 1.5 1.6 d 20.2 d1 1.5 g 16.4 18.4 e 1.65 1.85 n 50 f 7.4 7.6 t 22.4 k0 2.55 2.75 p0 3.9 4.1 base qty. 2500 p1 7.9 8.1 bulk qty. 2500 p2 1.9 2.1 r40 t 0.25 0.35 w 15.7 16.3 a d b full radius g measured at hub c n reel dimensions 40mm min. access hole at slot location t tape slot in core for tape start 25 mm min. width am08851v2
docid4337 rev 13 19/21 d r a ft KFXX packaging mechanical data 21 figure 16. 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 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
d r a ft revision history KFXX 20/21 docid4337 rev 13 8 revision history table 12. document revision history date revision changes 06-jun-2007 9 order codes updated. 14-dec-2007 10 modified: table 1 . 21-feb-2008 11 modified: table 1 . 23-oct-2012 12 change title description in cover page. updated: table 1 on page 1 . added: r thja value for dpak and so-8 table 3 on page 5 . modified: titles figure 6 and figure 7 on page 10 . 19-mar-2014 13 the part numbers kf25b, kf33b, kf50b, kf80b changed to kf. updated section 6: package mechanical data and section 7: packaging mechanical data . minor text changes.
docid4337 rev 13 21/21 d r a ft KFXX 21 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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