le00ab/c series very low drop voltage regulators with inhibit ? september 2002 n very low dropout voltage (0.2v typ.) n very low quiescent current (typ. 50 m a in off mode, 0.5ma in on mode, no load) n output current up to 100 ma 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; 8v n internal current and thermal limit n only 2.2 m f for stability n available in 1% (a) or 2% (c) selection at 25 o c n supply voltage rejection: 80 db (typ.) n temperature range: -40 to 125 o c description the le00 regulator series are very low drop regulators available in so-8 and to-92 packages and in a wide range of output voltages. the very low drop voltage (0.2v) and the very low quiescent current make them particularly suitable for low noise low power applications and specially in battery powered systems. they are pin to pin compatible with the older l78l00 series. furthermore in the 8 pin configuration (so-8) they employ a shutdown logic control (pin 5, ttl compatible). this means that when the device is used as a local regulator, its possible to put in stand by a part of the board even more decreasing the total power consumption. in the three terminal configuration (to-92) the device is even in on state, mantaining the same electrical performances. it needs only 2.2 m f capacitor for stability allowing room and cost saving effect. schematic diagram so-8 to-92 1/25
absolute maximum rating symbol parameter value unit v i dc input voltage 20 v i o output current internally limited (*) p tot power dissipation internally limi ted (*) t stg storage temperature range - 40 to 150 o c t op operating junction temperature range - 40 to 125 o c (*) our so-8 package used for voltage regulators is modified internally to have pins 2, 3, 6 and 7 electrically commoned 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 heatsinking. the external dimensions are the same as f or the standard so-8 test circuits note: if the inhibit pin is left floating, the regualtor is in on mode. however, to avoid any noise picking-up, it is suggested to ground it when le00ab/c 2/25
connection diagram and ordering numbers (top view) ordering numbers type so-8 to-92 output voltage le12ab le12c le15ab le15c le25ab le25c le27ab le27c le30ab le30c le33ab le33c le35ab le35c le40ab le40c le45ab le45c le47ab le47c le50ab le50c le52ab le52c le55ab le55c le60ab (*) le60c (*) le80ab (*) le80c (*) le120ab (*) le120c (*) le12abd le12cd le15abd le15cd le25abd le25cd le27abd le27cd le30abd LE30CD le33abd le33cd le35abd le35cd le40abd le40cd le45abd le45cd le47abd le47cd le50abd le50cd le52abd le52cd le55abd le55cd le60abd le60cd le80abd le80cd le120abd le120cd le12abz le12cz le15abz le15cz le25abz le25cz le27abz le27cz le30abz le30cz le33abz le33cz le35abz le35cz le40abz le40cz le45abz le45cz le47abz le47cz le50abz le50cz le52abz le52cz le55abz le55cz le60abz le60cz le80abz le80cz le120abz le120cz 1.25 v 1.25 v 1.5 v 1.5 v 2.5 v 2.5 v 2.7 v 2.7 v 3 v 3 v 3.3 v 3.3 v 3.5 v 3.5 v 4 v 4 v 4.5 v 4.5 v 4.7 v 4.7 v 5 v 5 v 5.2 v 5.2 v 5.5 v 5.5 v 6 v 6 v 8 v 8 v 12 v 12 v (*) available on request so-8 to-92 pin 1 = out pin 2 = gnd pin 3 = in bottom view le00ab/c 3/25
electrical characteristics for le12ab (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 = 10 ma, v i = 3.3 v i o = 10 ma, v i = 3.3 v -25 electrical characteristics for le15ab (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 = 10 ma, v i = 3.5 v i o = 10 ma, v i = 3.5 v -25 electrical characteristics for le25ab (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 = 10 ma, v i = 4.5 v i o = 10 ma, v i = 4.5 v -25 electrical characteristics for le27ab (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 = 10 ma, v i = 4.7 v i o = 10 ma, v i = 4.7 v -25 electrical characteristics for le30ab (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 = 10 ma, v i = 5 v i o = 10 ma, v i = 5 v -25 electrical characteristics for le33ab (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 = 10 ma, v i = 5.3 v i o = 10 ma, v i = 5.3 v -25 electrical characteristics for le35ab (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 = 10 ma, v i = 5.5 v i o = 10 ma, v i = 5.5 v -25 electrical characteristics for le40ab (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 = 10 ma, v i = 6 v i o = 10 ma, v i = 6 v -25 electrical characteristics for le45ab (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 = 10 ma, v i = 6.5 v i o = 10 ma, v i = 6.5 v -25 electrical characteristics for le47ab (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 = 10 ma, v i = 6.7 v i o = 10 ma, v i = 6.7 v -25 electrical characteristics for le50ab (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 = 10 ma, v i = 7 v i o = 10 ma, v i = 7 v -25 electrical characteristics for le52ab (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 = 10 ma, v i = 7.2 v i o = 10 ma, v i = 7.2 v -25 electrical characteristics for le55ab (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 = 10 ma, v i = 7.5 v i o = 10 ma, v i = 7.5 v -25 electrical characteristics for le60c (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 = 10 ma, v i = 8 v i o = 10 ma, v i = 8 v -25 electrical characteristics for le80ab (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 = 10 ma, v i = 10 v i o = 10 ma, v i = 10 v -25 electrical characteristics for le120ab (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 = 10 ma, v i = 14 v i o = 10 ma, v i = 14 v -25 dropout voltage vs output current supply current vs temperature short circuit current vs dropout voltage supply current vs input voltage s.v.r. vs frequency typical performance characteristics (unless otherwise specified t j =25 o c) dropout voltage vs temperature le00ab/c 20/25
logic controlled precision 3.3/5.0v selectable output sequential multi-output supply le00ab/c 21/25
multiple supply with on/off toggle switch basic inhibit functions le00ab/c 22/25
dim. mm inch min. typ. max. min. typ. max. a1.750.068 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 e1.27 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 m0.60.023 s 8 (max.) 0016023 so-8 mechanical data le00ab/c 23/25
dim. mm inch min. typ. max. min. typ. max. a 4.58 5.33 0.180 0.210 b 4.45 5.2 0.175 0.204 c 3.2 4.2 0.126 0.165 d 12.7 0.500 e1.27 0.050 f 0.4 0.51 0.016 0.020 g 0.35 0.14 to-92 mechanical data le00ab/c 24/25
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