kf00 series very low drop voltage regulators with inhibit june 1998 n very low dropout voltage (0.4v) n very low quiescent current (typ. 50 m a in off mode, 500 m ainon mode) n output current up to 500 ma n logic-controlled electronic shutdown n output voltages of 1.25; 1.5; 2.5; 2.7; 3; 3.3; 3.5; 4; 4.5; 4.7; 5; 5.2; 5.5; 6; 8; 8.5; 12v n internal current and thermal limit n only 2.2 m f for stability n available in 2% accuracy at 25 o c n supply voltage rejection: 70 db (typ.) n temperature range: -40 to 125 o c description the kf00 series are very low drop regulators available in so-8 package and in a wide range of output voltages. the very low drop voltage (0.4v) and the very low quiescent current make them particularly suitable for low noise, low power applications and specially 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 m f capacitor for stability allowing space and cost saving. schematic diagram 1 3 dpak so-8 ? 1/16
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 o c t op operating junction temperature range - 40 to 125 o c connection diagram (top view) thermal data symbol parameter dpak so-8 unit r thj-case thermal resistance junction-case 8 20 o c/w dpak so-8 kf00 2/16
ordering numbers type so-8 dpak output voltage kf12 (*) kf15 (*) kf25 kf27 kf30 kf33 kf35 (*) kf40 kf45 (*) kf47 KF50 kf52 kf55 (*) kf60 kf80 kf85 kf120 kf12bd kf15bd kf25bd kf27bd kf30bd kf33bd kf35bd kf40bd kf45bd kf47bd KF50bd kf52bd kf55bd kf60bd kf80bd kf85bd kf120bd kf12bdt kf15bdt kf25bdt kf27bdt kf30bdt kf33bdt kf35bdt kf40bdt kf45bdt kf47bdt KF50bdt kf52bdt kf55bdt kf60bdt kf80bdt kf85bdt kf120bdt 1.25 v 1.5 v 2.5 v 2.7 v 3v 3.3 v 3.5 v 4v 4.5 v 4.75 v 5v 5.2 v 5.5 v 6v 8v 8.5v 12 v (*) available on request test circuits kf00 3/16
electrical characteristics for kf12 (refer to the test circuits, t j =25 o c, c i = 0.1 m f, c o = 2.2 m f unless otherwise specified) symbol parameter test conditions min. typ. max. unit v o output voltage i o =50ma, v i = 3.3 v i o =50ma, v i = 3.3 v -25 electrical characteristics for kf25 (refer to the test circuits, t j =25 o c, c i = 0.1 m f, c o = 2.2 m f unless otherwise specified) symbol parameter test conditions min. typ. max. unit v o output voltage i o =50ma, v i = 4.5 v i o =50ma, v i = 4.5 v -25 electrical characteristics for kf30 (refer to the test circuits, t j =25 o c, c i = 0.1 m f, c o = 2.2 m f unless otherwise specified) symbol parameter test conditions min. typ. max. unit v o output voltage i o =50ma, v i =5v i o =50ma, v i = 5 v -25 electrical characteristics for kf35 (refer to the test circuits, t j =25 o c, c i = 0.1 m f, c o = 2.2 m f unless otherwise specified) symbol parameter test conditions min. typ. max. unit v o output voltage i o =50ma, v i = 5.5 v i o =50ma, v i = 5.5 v -25 electrical characteristics for kf45 (refer to the test circuits, t j =25 o c, c i = 0.1 m f, c o = 2.2 m f unless otherwise specified) symbol parameter test conditions min. typ. max. unit v o output voltage i o =50ma, v i = 6.5 v i o =50ma, v i = 6.5 v -25 electrical characteristics for KF50 (refer to the test circuits, t j =25 o c, c i = 0.1 m f, c o = 2.2 m f unless otherwise specified) symbol parameter test conditions min. typ. max. unit v o output voltage i o =50ma, v i =7v i o =50ma, v i = 7 v -25 electrical characteristics for kf55 (refer to the test circuits, t j =25 o c, c i = 0.1 m f, c o = 2.2 m f unless otherwise specified) symbol parameter test conditions min. typ. max. unit v o output voltage i o =50ma, v i = 7.5 v i o =50ma, v i = 7.5 v -25 electrical characteristics for kf80b (refer to the test circuits, t j =25 o c, c i = 0.1 m f, c o = 2.2 m f unless otherwise specified) symbol parameter test conditions min. typ. max. unit v o output voltage i o =50ma, v i =10v i o =50ma, v i = 10 v -25 electrical characteristics for kf120b (refer to the test circuits, t j =25 o c, c i = 0.1 m f, c o = 2.2 m f unless otherwise specified) symbol parameter test conditions min. typ. max. unit v o output voltage i o =50ma, v i =14v i o =50ma, v i = 14 v -25 dropout voltage vs output current supply current vs input voltage short circuit current vs input voltage supply current vs input voltage supply voltage rejection vs input voltage typical performance characteristics (unless otherwise specified v o(nom) = 3.3v) dropout voltage vs temperature kf00 13/16
dim. mm inch min. typ. max. min. typ. max. a 1.75 0.068 a1 0.1 0.25 0.003 0.009 a2 1.65 0.064 a3 0.65 0.85 0.025 0.033 b 0.35 0.48 0.013 0.018 b1 0.19 0.25 0.007 0.010 c 0.25 0.5 0.010 0.019 c1 45 (typ.) d 4.8 5.0 0.188 0.196 e 5.8 6.2 0.228 0.244 e 1.27 0.050 e3 3.81 0.150 f 3.8 4.0 0.14 0.157 l 0.4 1.27 0.015 0.050 m 0.6 0.023 s 8 (max.) 0016023 so-8 mechanical data kf00 14/16
dim. mm inch min. typ. max. min. typ. max. a 2.2 2.4 0.086 0.094 a1 0.9 1.1 0.035 0.043 a2 0.03 0.23 0.001 0.009 b 0.64 0.9 0.025 0.035 b2 5.2 5.4 0.204 0.212 c 0.45 0.6 0.017 0.023 c2 0.48 0.6 0.019 0.023 d 6 6.2 0.236 0.244 e 6.4 6.6 0.252 0.260 g 4.4 4.6 0.173 0.181 h 9.35 10.1 0.368 0.397 l2 0.8 0.031 l4 0.6 1 0.023 0.039 == d l2 l4 13 == b e == b2 g 2 a c2 c h a1 detail oao a2 detail oao to-252 (dpak) mechanical data 0068772-b kf00 15/16
information furnished is believed to be accurate and reliable. however, stmicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of stmicroelectronics. specification mentioned in this publication are subject to change without notice. this publication supersedes and replaces all information previously supplied. stmicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of stmicroelectronics. the st logo is a trademark of stmicroelectronics ? 1998 stmicroelectronics printed in italy all rights reserved stmicroelectronics group of companies australia - brazil - canada - china - france - germany - italy - japan - korea - malaysia - malta - morocco - the netherlands - singapore - spain - sweden - switzerland - taiwan - thailand - united kingdom - u.s.a. . kf00 16/16
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