3.5 - 57 3.5 isolated hermetic surface mount package three terminal, fixed voltage, 1 amp low dropout voltage regulator 4 11 r0 surface mount 0.5 volt low dropout positive regulator features ? similar to industry standard lm2940 ? dropout voltage typically 0.5v @ i o = 1a ? output current up to 1a ? reverse battery protection ? internal short circuit protection ? isolated hermetic surface mount package description these three terminal fixed voltage regulators are designed to provide 1.0a with high efficiency. it has the ability to source 1a of output current with a typical dropout voltage of .5v and a maximum of 1v over the entire temperature range. it is supplied in a hermetic surface mount package and is ideally suited for military applications where small size and high reliability are required. absolute maximum ratings @ 25c input voltage ..............................................26 vdc output voltage................................... +5v, +12v, +15 vdc operating junction temperature range ...................- 55 c to + 125c storage temperature range ...........................- 65 c to + 150c lead temperature (soldering 10 seconds) .........................300c thermal resistance: jc (isolated) ............................................15c/w maximum output current ....................................... 1.0a a om2940-15sm om2940-05smom2940-12sm downloaded from: http:///
3.5 - 58 om2940-05sm - om2940-15sm 3.5 electrical characteristics, p/n om2940-12sm (12 volts) -55c t a 125c, v in = 17 v, i o = 1 a, c out = 22 f (unless otherwise specified). parameter symbol test conditions notes min. max. unit output voltage v out v in = 17 v, i out = 5 ma 1 11.64 12.36 2 11.40 12.60 v v in = 13.6 v, i out = 5 ma 1 11.64 12.36 2 11.40 12.60 v in = 14 v, i out = 5 ma 1 11.64 12.36 2 11.40 12.60 v in = 26 v, i out = 5 ma 1 11.64 12.36 2 11.40 12.60 v in = 17 v, i out = 1 a 1 11.64 12.36 2 11.40 12.60 v in = 13.6 v, i out = 1 a 1 11.64 12.36 2 11.40 12.60 v in = 13.6 v, i out = 50 ma 1 11.64 12.36 2 11.40 12.60 v in = 17 v, i out = 50 ma 1 11.64 12.36 2 11.40 12.60 maximum line transient v lt v o 13 v, r o = 100 , t = 20 ms 1, 2 40 v reverse polarity v rin r o = 100 1, 2 -15 v input voltage dcreverse polarity v rit r o = 100 , t =20 ms 1, 2 -45 v input voltage transient quiescent current i q v in = 17 v, i out = 5 ma 12 0 ma 23 0 v in = 14 v, i out = 5 ma 12 0 23 0 v in = 26 v, i out = 5 ma 12 0 23 0 v in = 17 v, i out = 1 a 17 0 21 2 0 line regulation v rln 14 v v in 26 v, 1 110 mv i out = 5 ma 2 180 load regulation v rld v in = 17 v, 50 ma i out 1 a 1 1 6 0 mv 2 2 2 0 dropout voltage v do i out = 1 a 1. 7 v 21 i out = 100 ma 11 5 0 mv 22 0 0 output noise voltage v on v in = 17 v, i o = 5 ma, 1 1000 v rms 10 hz - 100 hz output impedance r o v in = 17 v, i out = 100 ma dc 1, 2 1 and 20 ma ac, f o = 120 hz short circuit current i os v in = 17 v 1 1.2 a 2 1.0 ripple rejection r r v in = 17 v + 1 v rms, 1 52 db i out = 5 ma, f = 1 khz 2 46 notes: 1. t a = 25c . 2. over full operating temperature range. electrical characteristics, p/n om2940-5sm (5 volts) -55c t a 125c, v in = 10 v, i o = 1 a, c out = 22 f (unless otherwise specified). parameter symbol test conditions notes min. max. unit output voltage v out v in = 10 v, i out = 5 ma 1 4.85 5.15 2 4.75 5.25 v v in = 6 v, i out = 5 ma 1 4.85 5.15 2 4.75 5.25 v in = 7 v, i out = 5 ma 1 4.85 5.15 2 4.75 5.25 v in = 26 v, i out = 5 ma 1 4.85 5.15 2 4.75 5.25 v in = 10 v, i out = 1 a 1 4.85 5.15 2 4.75 5.25 v in = 6 v, i out = 1 a 1 4.85 5.15 2 4.75 5.25 v in = 6 v, i out = 50 ma 1 4.85 5.15 2 4.75 5.25 v in = 10 v, i out = 50 ma 1 4.85 5.15 2 4.75 5.25 maximum line transient v lt v o 6 v, r o = 100 , t = 20 ms 1, 2 40 v reverse polarity v rin r o = 100 1, 2 -15 v input voltage dcreverse polarity v rit r o = 100 , t =20 ms 1, 2 -45 v input voltage transient quiescent current i q v in = 10 v, i out = 5 ma 12 0 ma 23 0 v in = 7 v, i out = 5 ma 12 0 23 0 v in = 26 v, i out = 5 ma 12 0 23 0 v in = 10 v, i out = 1 a 17 0 2 120 line regulation v rln 7 v v in 26 v, 1 55 mv i out = 5 ma 2 80 load regulation v rld v in = 10 v, 50 ma i out 1 a 1 6 5 mv 2 120 dropout voltage v do i out = 1 a 1. 7 v 21 i out = 100 ma 1 150 mv 2 200 output noise voltage v on v in = 10 v, i o = 5 ma, 1, 2 700 v rms 10 hz - 100 hz output impedance r o v in = 10 v, i out = 100 ma dc 1, 2 1 and 20 ma ac, f o = 120 hz short circuit current i os v in = 10 v 1 1.2 a 2 1.0 ripple rejection r r v in = 10 v + 1 v rms, 1 60 db i out = 5 ma, f = 1 khz 2 50 notes: 1. t a = 25c . 2. over full operating temperature range. downloaded from: http:///
3.5 - 59 om2940-05sm - om2940-15sm 3.5 electrical characteristics, p/n om2940-15sm (15 volts) -55c t a 125c, v in = 20 v, i o = 1 a, c out = 22 f (unless otherwise specified). parameter symbol test conditions notes min. max. unit output voltage v out v in = 20 v, i out = 5 ma 1 14.55 15.45 2 14.25 15.75 v v in = 16.75 v, i out = 5 ma 1 14.55 15.45 2 14.25 15.75 v in = 17 v, i out = 5 ma 1 14.55 15.45 2 14.25 15.75 v in = 26 v, i out = 5 ma 1 14.55 15.45 2 14.25 15.75 v in = 20 v, i out = 1 a 1 14.55 15.45 2 14.25 15.75 v in = 16.75 v, i out = 1 a 1 14.55 15.45 2 14.25 15.75 v in = 16.75 v, i out = 50 ma 1 14.55 15.45 2 14.25 15.75 v in = 20 v, i out = 50 ma 1 14.55 15.45 2 14.25 15.75 maximum line transient v lt v o 16 v, r o = 100 , t = 20 ms 1, 2 40 v reverse polarity v rin r o = 100 1, 2 -15 v input voltage dcreverse polarity v rit r o = 100 , t =20 ms 1, 2 -45 v input voltage transient quiescent current i q v in = 20 v, i out = 5 ma 12 0 ma 23 0 v in = 17 v, i out = 5 ma 12 0 23 0 v in = 26 v, i out = 5 ma 12 0 23 0 v in = 20 v, i out = 1 a 17 0 2 120 line regulation v rln 17 v v in 26 v, 1 125 mv i out = 5 ma 2 350 load regulation v rld v in = 20 v, 50 ma i out 1 a 1 200 mv 2 400 dropout voltage v do i out = 1 a 1. 7 v 21 i out = 100 ma 1 150 mv 2 200 output noise voltage v on v in = 20 v, i o = 5 ma, 1 1000 v rms 10 hz - 100 hz output impedance r o v in = 20 v, i out = 100 ma ac 1, 2 1 and 20 ma dc, f o = 120 hz short circuit current i os v in = 20 v 1 1.2 a 2 1.0 ripple rejection r r v in = 20 v + 1 v rms, 1 48 db i out = 5 ma, f = 1 khz 2 42 notes: 1. t a = 25c . 2. over full operating temperature range. mechanical outline pin connection .450 sq. .300 4 plcs. .050 24 plcs. .305 sq. .02 x 45 .090 max. .05 x 45 max. 3 plcs. .009 r. 28 plcs. .035 pin 1 pin 28 bottom top side 41 26 1218 pin 1, 15 thru 28: in pin 2, 3, 13, and 14: gnd pin 4 thru 12: out downloaded from: http:///
om2940-05sm - om2940-15sm 3.5 typical applications 0. 9 inout - output differential (v) 0 output current (ma) dropout voltage t j = 25 c 200 1000 800 600 400 0. 8 0. 7 0. 6 0. 5 0. 4 0. 3 0. 2 0 0. 1 1. 0 dropout voltage (v) -40 temperature ( c) dropout voltage vs temperature 1 a 0 160 120 40 0. 9 0. 8 0. 7 0. 6 0. 5 0. 4 0. 3 0. 2 0. 1 0 80 500 ma 100 ma 5. 10 output voltage (5v) -40 temperature ( c) output voltage vs temperature 0 160 120 40 5. 08 5. 06 5. 04 5. 02 5. 00 4. 98 4. 96 4. 94 4. 92 4. 90 80 30 -10 time ( s) line transient response 0 0v 20 10 0 -10 -20 -30 3v output voltage deviation (mv) input voltage change (v) 10 20 30 40 50 60 200 quiescent current (ma) 0 input voltage (v) quiescent current 1 a 180 160 140 120 100 80 60 40 20 0 500 ma 100 ma 5 101520253035 50 quiescent current (ma) temperature ( c) quiescent current vs temperature v in = v out +5v 0 40 30 20 10 -40 0 160 120 40 80 1 a 500 ma 10 ma 50 quiescent current (ma) 0 load current (a) quiescent current 0. 2 1. 0 0. 8 0. 4 40 30 20 10 0 0. 6 v in = 14v v out = 5v t j = 25 c 95 ripple rejection (db) 1 frequency (hz) ripple rejection 10 100k 10k 100 35 1k 1m 45 55 65 75 85 v in = 10v c out = 22 f i out = 10ma v out =5v 0. 5 -10 time ( s) load transient response 04 0 30 10 0 20 0. 4 0. 3 0. 2 0. 1 0 -0. 1 -0. 2 -0. 3 -0. 4 -0. 5 1. 0 0. 5 output voltage deviation (v) load current change (a) v in = 10v, c out = 22 f t j = 25 c, v out =5v downloaded from: http:///
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