3.3 - 1 three t erminal, 3.3 v olt positive fixed low dropout v oltage regulator in hermetic jedec t o-257aa and surface mount packages 9 01 r1supersedes 8 07 r0 1.3 amp low dropout 3.3 fixed volt age regulator approved to smd 5962-98590 features ? similar to industry standard l t1086 -3.3 ? approved to ds c c standardized military drawing number 5962-98590 ? built in thermal overload protection ? short circuit current limiting ? a vailable in isolated package ? output v oltage t olerance is guaranteed to 1% ? guaranteed dropout v oltage at multiple current levels descriptionthis 3.3 volt fixed voltage regulator is designed to provide 1.3a of current with a higher e f ficiency than conventional voltage regulators. this device is designed to operate down to 1 volt input to output dif ferential and the 1.5v dropout voltage is guaranteed at the maximum output current. this device is ideally suited for those systems where high reliability , small size and low weight are required. the isolated package simplifies the system assembly methods.absolute maximum ra tings @ 25c input v o ltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . 30 v output current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . 1.3 a operating junction te mperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .- 65c to + 150c storage te mperature r ange . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 6 5c t o + 1 50c lead te mperature (soldering 10 seconds) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300c power dissipation (p d ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . internally limi ted thermal resistance: q jc (isolated) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.2c/w q ja . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42c/w om3957nmm om3957stmom3957smm part number designator standard military drawing omnirel part number 5962-9859001mma om3957smm 5962-9859001m u a om3957stm 5962-9859001mna om3957nmm please see mechanical outlines herein downloaded from: http:///
om3957nmm om3957stmom3957smm electrical characteristics -55c t a 125c (unless otherwise specified) parameter symbol test conditions min. max. unit output voltage v out v in = 5 .0 v , i out = 10 ma 3.267 3.333 v t a = 25 c 4.75 v v in 18 v, ? 3.235 3.365 v 10 ma i out 1.3 a line regulation 3v out 4.5v v in 18 v, i out = 0 a, t a = 25 c 10 m v (note 1) 3v in 4.5v v in 18 v, i out = 0 a ? 12 load regulation 3v out v in = 5.0 v, 0a i out 1.3 a 15 m v (note 1) 3 i out t a = 25 c v in = 5.0 v, 0a i out 1.3 a ? 25 m v dropout voltage v do i out = 1.3 a, 3v ref = 1% ? 1.5 v thermal regulation - 30 ms pulse, t a = +25 c 0.04 % / w ripple rejection 3v in f = 120 hz, c adj = 25 f, ? 60 d b 3v out c out = 25 f (tantalum), i out = 1.3 a, v in = 6.3 v quiescent current i q v in = 18 v ? 10 m a current limit i lim v in = 8.3 v ? 1.3 2.5 a v in = 28.3 v ? .050 - -a temperature stability 3v out -55 c t j +125 c 1.5 % (note 2) 3 t long term stability 3v out t a = +125 c, t = 1000 hrs 1.0 % (note 2) 3 t notes:1 . line and load regulation are measured at a constant junction temperature using a low duty cycle pulse technique. although power dissipation is internally limited, regulation is guaranteed up to the maximum power dissipation of 13 w. power dissipation is determined by the input/output differential voltage and the output current. guaranteed maximum power dissipation will not be available over the full input/output voltage range. 2 . guaranteed by design, characterization or correlation to other tested parameters. 3 . the ? denotes the specifications which apply over the full operating temperature range. downloaded from: http:///
205 craw ford street, leominster, ma 01453 usa (978) 534-5776 fax (978) 537-4246 visit our web site at www.omnirel.com om3957nmm om3957stmom3957smm 123 4 pin out 1 ground 2v out 3v in 4 isolated connection diagram .430.410 .200.190 .038 max. .005 .120 typ. .537.527 .665.645 .420.410 .150.140 .750.500 .100 typ. .035.025 .045.035 mechanical outline notes ? case is metal/hermetically sealed ? isolated tab mechanical outline mechanical outline .425 .200 .100 .350 min. .080 .160 .020 .020 .035 wideflat 3 plcs. .115 .425 1 2 3 front view pin 1 - ground pin 2 - v in pin 3 - v out tab - isolated om3957stm om3957smm om3957nmm .450 .140 .415 .157 .015 .140 .140 .050 .050 .037 .375 .030 min. .625 12 3 front view pin 1 - v in pin 2 - ground pin 3 - v out downloaded from: http:///
thank you for your interest thank you for your interest in omnirel in omnirel s products! s products! 205 craw ford street, leominster, ma 01453 usa (978) 534-5776 fax (978) 537-4246 visit our web site at www.omnirel.com downloaded from: http:///
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