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r1112n 2 block diagram r1112nxx1a r1112nxx1b vref current limit v dd 15 2 3 v out gnd ce vref current limit v dd 15 2 3 v out gnd ce selection guide # %
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r1112n 3 pin configuration sot-23-5 54 v out nc (mark side) 123 v dd gnd ce pin description pin no. symbol description 5 !(# >( a4 a (>( - #(>( c ((
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r1112n 4 electrical characteristics ? r1112nxx1a # 7 . symbol item conditions min. typ. max. unit 5 # 5 5 75 f5 '3 ! -'3 5 69 5 5 ! # ( 5 5 75 . '3 ? 5 ? ! 2 ( 5 75 f5 '3 ! 9'3 c '5 5
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r1112n 6 operation r1112nxx1a r1112nxx1b v dd 15 2 3 v out gnd r2 r1 ce current limit vref v dd 15 2 3 v out gnd r2 r1 ce current limit vref !(!%*
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r1112n 7 test circuits r1112nxx1b series v dd 5 1 2 3 v out i out in out gnd ce 2.2 f r1112nxx1b series v dd 5 1 2 3 v out i ss in out gnd ce 2.2 f fig.1 standard test circuit fig.2 supply current test circuit r1112nxx1b series v dd 5 1 p. g 2 3 v out i out in out gnd ce r1112nxx1b series v dd 5 1 2 3 v out in out gnd i1 i2 ce 2.2 f fig.3 ripple rejection, line transient response fig.4 load transient response test circuit test circuit
r1112n 8 typical application r1112nxx1a series v out out in v dd gnd ce cap. cap. r1112nxx1b series v out out in v dd gnd ce cap. cap. /&( '# ((0 # #
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r1112n 9 typical characteristics 1) output voltage vs. output current r11x2n151b r11x2n201b output voltage v out (v) v in =2.0v v in =2.5v v in =3.5v output current i out (ma) 0 100 200 300 500 400 1.6 1.8 1.4 1.2 1 0.8 0.4 0.2 0.6 0 output voltage v out (v) v in =2.3v v in =2.5v v in =3.0v v in =4.0v output current i out (ma) 0 100 200 300 500 400 2.5 2 1.5 0.5 1 0 r11x2n301b r11x2n401b output voltage v out (v) v in =3.3v v in =3.5v v in =4.0v v in =5.0v output current i out (ma) 0 100 200 300 500 400 3.5 3 2.5 0.5 1.5 1 2 0 output voltage v out (v) v in =4.3v v in =4.5v v in =5.0v v in =6.0v output current i out (ma) 0 100 200 300 500 400 5 4 3 1 2 0 r11x2n501b output voltage v out (v) v in =5.3v v in =5.5v v in =6.0v v in =7.0v output current i out (ma) 0 100 200 300 500 400 6 5 4 1 2 3 0
r1112n 10 2) output voltage vs. input voltage r11x2n151b r11x2n201b output voltage v out (v) i out =1ma i out =30ma i out =50ma input voltage v in (v) 12 34 67 5 1.600 1.500 1.400 1.300 1.200 1.100 1.000 output voltage v out (v) i out =1ma i out =30ma i out =50ma input voltage v in (v) 12 34 67 5 2.100 2.000 1.900 1.800 1.700 1.600 1.500 r11x2n301b r11x2n401b output voltage v out (v) i out =1ma i out =30ma i out =50ma input voltage v in (v) 234 67 5 3.100 3.000 2.900 2.800 2.700 2.600 2.500 output voltage v out (v) i out =1ma i out =30ma i out =50ma input voltage v in (v) 234 67 5 4.500 4.000 3.500 3.000 2.500 r11x2n501b output voltage v out (v) i out =1ma i out =30ma i out =50ma input voltage v in (v) 234 67 5 5.500 5.000 4.500 4.000 3.500 3.000 2.500
r1112n 11 3) dropout voltage vs. output current r11x2n151b r11x2n201b dropout voltage v dif (v) topt=-40 c topt=25 c topt=85 c output current i out (ma) 0 50 150 100 0.600 0.500 0.400 0.300 0.200 0.100 0.000 dropout voltage v dif (v) topt=-40 c topt=25 c topt=85 c output current i out (ma) 0 50 150 100 0.600 0.500 0.400 0.300 0.200 0.100 0.000 r11x2n301b r11x2n401b dropout voltage v dif (v) topt=-40 c topt=25 c topt=85 c output current i out (ma) 0 50 150 100 0.600 0.500 0.400 0.300 0.200 0.100 0.000 dropout voltage v dif (v) topt=-40 c topt=25 c topt=85 c output current i out (ma) 0 50 150 100 0.600 0.500 0.400 0.300 0.200 0.100 0.000 r11x2n501b dropout voltage v dif (v) topt=-40 c topt=25 c topt=85 c output current i out (ma) 0 50 150 100 0.600 0.500 0.400 0.300 0.200 0.100 0.000
r1112n 12 4) output voltage vs. temperature r11x2n151a/b r11x2n201b output voltagev out (v) v in =2.5v c in =1 f c out =2.2 f i out =30ma temperature topt ( c) -50 -25 0 25 100 50 75 1.53 1.52 1.51 1.50 1.49 1.47 1.48 output voltagev out (v) v in =3.0v c in =1 f c out =2.2 f i out =30ma temperature topt ( c) -50 -25 0 25 100 50 75 2.10 2.08 2.04 2.06 2.00 2.02 1.98 1.96 1.90 1.94 1.92 r11x2n301a/b r11x2n401a/b output voltagev out (v) v in =4.0v c in =1 f c out =2.2 f i out =30ma temperature topt ( c) -50 -25 0 25 100 50 75 3.06 3.04 3.02 3.00 2.98 2.94 2.96 output voltagev out (v) v in =5.0v c in =1 f c out =2.2 f i out =30ma temperature topt ( c) -50 -25 0 25 100 50 75 4.08 4.06 4.04 4.00 4.02 3.98 3.92 3.96 3.94 r11x2n501a/b output voltagev out (v) v in =6.0v c in =1 f c out =2.2 f i out =30ma temperature topt ( c) -50 -25 0 25 100 50 75 5.10 5.08 5.04 5.06 5.00 5.02 4.98 4.96 4.90 4.94 4.92
r1112n 13 5) supply current vs. input voltage r11x2n151b r11x2n201b supply current i ss ( a) input voltage v in (v) 12 34 7 56 120 100 80 60 40 20 0 supply current i ss ( a) input voltage v in (v) 12 34 7 56 120 100 80 60 40 20 0 r11x2n301b r11x2n401b supply current i ss ( a) input voltage v in (v) 12 34 7 56 120 100 80 60 40 20 0 supply current i ss ( a) input voltage v in (v) 12 34 7 56 120 100 80 60 40 20 0 r11x2n501b supply current i ss ( a) input voltage v in (v) 12 34 7 56 120 100 80 60 40 20 0
r1112n 14 6) supply current vs. temperature r11x2n151a/b r11x2n201a/b supply current i ss ( a) temperature topt ( c) -50 -25 0 25 v in =2.5v c in =1 f c out =2.2 f 100 50 75 200 150 100 50 0 supply current i ss ( a) temperature topt ( c) -50 -25 0 25 v in =3.0v c in =1 f c out =2.2 f 100 50 75 200 150 100 50 0 r11x2n301a/b r11x2n401a/b supply current i ss ( a) temperature topt ( c) -50 -25 0 25 v in =4.0v c in =1 f c out =2.2 f 100 50 75 200 150 100 50 0 supply current i ss ( a) temperature topt ( c) -50 -25 0 25 v in =5.0v c in =1 f c out =2.2 f 100 50 75 200 150 100 50 0 r11x2n501a/b supply current i ss ( a) temperature topt ( c) -50 -25 0 25 v in =6.0v c in =1 f c out =2.2 f 100 50 75 200 150 100 50 0
r1112n 15 7) ripple rejection vs. frequency r11x2n151a/b r11x2n201a/b ripple rejection rr (db) frequency freq (khz) 0.1 1 v in =2.5v+0.5vp-p c out =2.2 f i out =30ma 100 10 90.00 80.00 70.00 60.00 50.00 40.00 30.00 20.00 10.00 0.00 ripple rejection rr (db) frequency freq (khz) 0.1 1 v in =3.0v+0.5vp-p c out =2.2 f i out =30ma 100 10 90.00 80.00 70.00 60.00 50.00 40.00 30.00 20.00 10.00 0.00 r11x2n301a/b r11x2n401a/b ripple rejection rr (db) frequency freq (khz) 0.1 1 v in =4.0v+0.5vp-p c out =2.2 f i out =30ma 100 10 90.00 80.00 70.00 60.00 50.00 40.00 30.00 20.00 10.00 0.00 ripple rejection rr (db) frequency freq (khz) 0.1 1 v in =5.0v+0.5vp-p c out =2.2 f i out =30ma 100 10 90.00 80.00 70.00 60.00 50.00 40.00 30.00 20.00 10.00 0.00 r11x2n501a/b ripple rejection rr (db) frequency freq (khz) 0.1 1 v in =6.0v+0.5vp-p c out =2.2 f i out =30ma 100 10 90.00 80.00 70.00 60.00 50.00 40.00 30.00 20.00 10.00 0.00
r1112n 16 8) ripple rejection vs. input voltage (dc bias) r11x2n301b r11x2n301b ripple rejection rr (db) input voltage v in (v) 3.10 3.20 3.30 3.40 c out =ceramic 2.2 f i out =1ma 3.50 90.00 f=400hz f=1khz f=10khz 80.00 70.00 60.00 50.00 40.00 30.00 20.00 10.00 0.00 ripple rejection rr (db) input voltage v in (v) 3.10 3.20 3.30 3.40 c out =ceramic 2.2 f i out =10ma 3.50 90.00 f=400hz f=1khz f=10khz 80.00 70.00 60.00 50.00 40.00 30.00 20.00 10.00 0.00 r11x2n301b ripple rejection rr (db) input voltage v in (v) 3.10 3.20 3.30 3.40 c out =ceramic 2.2 f i out =50ma 3.50 90.00 f=400hz f=1khz f=10khz 80.00 70.00 60.00 50.00 40.00 30.00 20.00 10.00 0.00 9) input transient response r11x2n151b 2 1 ch1 1.00v ch2 ch1 20.0mv m20.0 s v in v out tek run : 2.50ms/s average 5 7.5 ? -.5 ! 7-'3 7( ( 7 j *7. # 7 .
r1112n 17 r11x2n201b 2 1 1.00v ch2 ch1 20.0mv m20.0 s v in v out tek run : 2.50ms/s average r11x2n301b 2 1 1.00v ch2 ch1 20.0mv m20.0 s v in v out tek run : 2.50ms/s average r11x2n401b 2 1 1.00v ch2 ch1 20.0mv m20.0 s v in v out tek run : 2.50ms/s average 5 7-5 ? c5 ! 7-'3 7( ( 7 j *7. # 7 . 5 7c5 ? .5 ! 7-'3 7( ( 7 j *7. # 7 . 5 7.5 ? 5 ! 7-'3 7( ( 7 j *7. # 7 .
r1112n 18 r11x2n501b 2 1 1.00v ch2 ch1 20.0mv m20.0 s v in v out tek run : 2.50ms/s average 10) load transient response r11x2n151b 2 1 500mv ch2 ch1 50.0mv m20.0 s i out v out tek run : 2.50ms/s average r11x2n201b 2 1 500mv ch2 ch1 50.0mv m20.0 s i out v out tek run : 2.50ms/s average 5 7 5 ? d5 ! 7-'3 7( ( 7 j *7. # 7 . ! 7.'3 ? '3 5 7.5 7 j 7 j *7. # 7 . ! 7.'3 ? '3 5 7-5 7 j 7 j *7. # 7 .
r1112n 19 r11x2n301b 2 1 500mv ch2 ch1 50.0mv m20.0 s i out v out tek run : 2.50ms/s average r11x2n401b 2 1 500mv ch2 ch1 50.0mv m20.0 s i out v out tek run : 2.50ms/s average r11x2n501b 2 1 500mv ch2 ch1 50.0mv m20.0 s i out v out tek run : 2.50ms/s average ! 7.'3 ? '3 5 7c5 7 j 7 j *7. # 7 . ! 7.'3 ? '3 5 7.5 7 j 7 j *7. # 7 . ! 7.'3 ? '3 5 7 5 7 j 7 j *7. # 7 .
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r1112n 21 r11x2n301b r11x2n301b 0.01 0.1 1 100 10 03060 i out (ma) c out =2.2 f,c in =2.2 f esr ( ? ) 120 90 150 0.01 0.1 1 100 10 03060 i out (ma) c out =4.7 f,c in =2.2 f esr ( ? ) 120 90 150

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