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no. ea-057-0006 /2: # 12,6( #483 p$ # /'2 5(*8/$725 5 4444 1 # 6(5,(6 $33/,&$7,21 # 0$18$/
low noise 150ma ldo regulator 5 4444 1 # 6(5,(6 1 outline 7kh # 5 4444 1 # 6hulhv # duh # yrowdjh # uhjxodwru # ,&v # zlwk # kljk # rxwsxw # yrowdjh # dffxudf\ /# h[wuhpho\ # orz # vxsso\ # fxuuhqw /# orz 21 0 uhvlvwdqfh /# dqg # kljk # 5lssoh # 5hmhfwlrq # e\ # &026 # surfhvv 1# (dfk # ri # wkhvh # yrowdjh # uhjxodwru # ,&v # frqvlvwv # ri # d # yrowdjh uhihuhqfh # xqlw /# dq # huuru # dpsolilhu /# uhvlvwruv /# d # fxuuhqw # olplw # flufxlw /# dqg # d # fkls # hqdeoh # flufxlw 1 7khvh # ,&v # shuirup # zlwk # orz # gursrxw # yrowdjh # dqg # d # fkls # hqdeoh # ixqfwlrq 1# 7kh # olqh # wudqvlhqw # uhvsrqvh # dqg # ordg # wudq 0 vlhqw # uhvsrqvh # ri # wkh # 5 4444 1 # 6hulhv # duh # h[fhoohqw /# wkxv # wkhvh # ,&v # duh # yhu\ # vxlwdeoh # iru # wkh # srzhu # vxsso\ # iru # kdqg 0 khog frppxqlfdwlrq # htxlsphqw 1 7kh # rxwsxw # yrowdjh # ri # wkhvh # ,&v # lv # il[hg # zlwk # kljk # dffxudf\ 1# 6lqfh # wkh # sdfndjh # iru # wkhvh # ,&v # duh # 627 05608#+ 0lql 0 prog ,# sdfndjh #/# kljk # ghqvlw\ # prxqwlqj # ri # wkh # ,&v # rq # erdugv # lv # srvvleoh 1 features 8owud 0 /rz # 6xsso\ # &xuuhqw 11111111111111111111111111111111111111111111111111 7<3 1#68 m $ 6wdqge\ # 0rgh 1111111111111111111111111111111111111111111111111111111111111111111111 7<3 1#314 m $ /rz # 'ursrxw # 9r o w d j h 1111111111111111111111111111111111111111111111111111111111 7<3 1#315 9 + , 287 433 p$ , +ljk # 5lssoh # 5hmhfwlrq 111111111111111111111111111111111111111111111111111111111 7<3 1#:3 g% + i 4 n+] , /rz # 7hpshudwxuh 0 'uliw # &rhiilflhqw # ri # 2xwsxw # 9r o w d j h 111111 7<3 1# ? 433 ssp 2 & ([fhoohqw # /lqh # 5hjxodwlrq 111111111111111111111111111111111111111111111111111 7<3 1#3138(2 9 +ljk # 2xwsxw # 9r o w d j h # $ffxudf\ 1111111111111111111111111111111111111111111 ? 513( ([fhoohqw # /lqh # 7udqvlhqw # 5hvsrqvh # dqg # /rdg # 7udqvlhqw # 5hvsrqvh 6pdoo # 3dfndjh # 111111111111111111111111111111111111111111111111111111111111111111111 627 05608+ 0lql 0 prog , 2xwsxw # 9r o w d j h 111111111111111111111111111111111111111111111111111111111111111111111 6whszlvh # vhwwlqj # zlwk # d # vwhs # ri #314 9 # lq # wkh # udqjh # ri #418 9 # wr 813 9 # lv # srvvleoh %xlow 0 lq # fkls # hqdeoh # flufxlw ##+#5# w\shv ># $ =# dfwlyh # / /# % =# dfwlyh # + , 3lqrxw 11111111111111111111111111111111111111111111111111111111111111111111111111111111111 6lplodu # wr # wkh # /3 5<;3 applications 3rzhu # vrxufh # iru # fhooxodu # skrqhv # vxfk # dv # *60 / &'0$ # dqg # ydulrxv # nlqg # ri # 3&6v 1 3rzhu # vrxufh # iru # hohfwulfdo # dssoldqfhv # vxfk # dv # fdphudv /# 9&5v # dqg # fdpfrughuv 1 3rzhu # vrxufh # iru # edwwhu\ 0 srzhuhg # htxlsphqw 1
r1111n 2 block diagram r1111nxx1a r1111nxx1b 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 7kh # rxwsxw # yrowdjh /# wkh # dfwlyh # w\sh /# wkh # sdfnlqj # w\sh /# dqg # wkh # wdslqj # w\sh # iru # wkh # ,&v # fdq # eh # vhohfwhg # dw # wkh xvhu * v # uhtxhvw 1# 7kh # vhohfwlrq # fdq # eh # pdgh # e\ # ghvljqdwlqj # wkh # sduw # qxpehu # dv # vkrzq # ehorz #= 5 4444 ;;; 4 ; 0 ;; ? 3duw # 1xpehu ---- defg code contents d 'hvljqdwlrq # ri # 3dfndjh # 7\ s h #= 1 = 627 05608#+ 0lql 0 prog , e 6hwwlqj # 2xwsxw # 9r o w d j h #+ 9 287 ,#= 6whszlvh # vhwwlqj # zlwk # d # vwhs # ri #314 9 # lq # wkh # udqjh # ri #418 9 # wr #813 9 # lv # srvvleoh 1 f 'hvljqdwlrq # ri # $fwlyh # 7\ s h #= $ #= / # dfwlyh # w\sh % #= + # dfwlyh # w\sh g 'hvljqdwlrq # ri # 7dslqj # 7\ s h #= ([ 1# 75 /# 7/ #+ uhihu # wr # 7dslqj # 6shflilfdwlrqv #> 75 # w\sh # lv # wkh # vwdqgdug # gluhfwlrq 1,
r1111n 3 pin configuration sot-23-5 54 v out nc (mark side) 123 v dd gnd ce pin description pin no. symbol description 4 9 '' ,qsxw # 3lq 5 *1' *urxqg # 3lq 6 &( # ru # &( &kls # (qdeoh # 3lq 7 1& 1r # &rqqhfwlrq 8 9 287 2xwsxw # slq absolute maximum ratings item symbol rating unit ,qsxw # 9r o w d j h 9 ,1 < 9 ,qsxw # 9r o w d j h + &( # ru # &( # 3lq , 9 &( 0316# a # 9 ,1 .316 9 2xwsxw # 9r o w d j h 9 287 0316# a # 9 ,1 .316 9 3rzhu # 'lvvlsdwlrq 3 ' 583 p: 2shudwlqj # 7hpshudwxuh 5dqjh 7r s w 073# a #;8 & 6wrudjh # 7hpshudwxuh # 5dqjh 7vwj 088# a #458 &
r1111n 4 electrical characteristics r1111nxx1a 7r s w 58 & symbol item conditions min. typ. max. unit 9 287 2xwsxw # 9r o w d j h 9 ,1 # # 6hw # 9 287 .4 9 4 p$ # # , 287 # #63 p$ 9 287 31<; 9 287 4135 9 , 287 2xwsxw # &xuuhqw 5hihu # wr # wkh # (/(&75,&$/ # &+$5$&7(5,67,&6 # e\ # 287387 92/7$*( d 9 287 2 d , 287 /rdg # 5hjxodwlrq 9 ,1 # # 6hw # 9 287 .4 9 4 p$ # # , 287 # #;3 p$ 45 73 p9 9 ',) 'ursrxw # 9r o w d j h 5hihu # wr # wkh # (/(&75,&$/ # &+$5$&7(5,67,&6 # e\ # 287387 92/7$*( , 66 6xsso\ # &xuuhqw 9 ,1 # # 6hw # 9 287 .4 9 68 :3 m $ ,vwdqge\ 6xsso\ # &xuuhqw #+ 6wdqge\ , 9 ,1 # # 9 &( # # 6hw # 9 287 .4 9 314 413 m $ d 9 287 2 d 9 ,1 /lqh # 5hjxodwlrq 6hw # 9 287 .318 9 # # 9 ,1 # #; 9 , 287 # #63 p$ 3138 3153 (2 9 55 5lssoh # 5hmhfwlrq i # #4 n+] /# 5lssoh #318 9s 0 s 9 ,1 # # 6hw # 9 287 .4 9 :3 g% 9 ,1 ,qsxw # 9r o w d j h ; 9 d 9 287 2 d 7 2xwsxw # 9r o w d j h 7hpshudwxuh # &rhiilflhqw , 287 # #63 p$ 073 & # # 7r s w # #;8 & ? 433 ssp 2 & ,olp 6kruw # &xuuhqw # /lplw 9 287 # #3 9 83 p$ 5 38 &( # 3xoo 0 xs # 5hvlvwdqfh 518 8 43 0 w 9 &(+ &( # ,qsxw # 9r o w d j h # + 418 9 ,1 9 9 &(/ &( # ,qsxw # 9r o w d j h # / 3 3158 9 hq 2xwsxw # 1rlvh %: # #43 +] # ~ #433 n+] 63 m 9upv
r1111n 5 r1111nxx1b 7r s w 58 & symbol item conditions min. typ. max. unit 9 287 2xwsxw # 9r o w d j h 9 ,1 # # 6hw # 9 287 .4 9 4 p$ # # , 287 # #63 p$ 9 287 31<; 9 287 4135 9 , 287 2xwsxw # &xuuhqw 5hihu # wr # wkh # (/(&75,&$/ # &+$5$&7(5,67,&6 # e\ # 287387 92/7$*( d 9 287 2 d , 287 /rdg # 5hjxodwlrq 9 ,1 # # 6hw # 9 287 .4 9 4 p$ # # , 287 # #;3 p$ 45 73 p9 9 ',) 'ursrxw # 9r o w d j h 5hihu # wr # wkh # (/(&75,&$/ # &+$5$&7(5,67,&6 # e\ # 287387 92/7$*( , 66 6xsso\ # &xuuhqw 9 ,1 # # 6hw # 9 287 .4 9 68 :3 m $ ,vwdqge\ 6xsso\ # &xuuhqw #+ 6wdqge\ , 9 ,1 # # 6hw # 9 287 .4 9 9 &( *1' 314 413 m $ d 9 287 2 d 9 ,1 /lqh # 5hjxodwlrq 6hw # 9 287 .318 9 # # 9 ,1 # #; 9 , 287 # #63 p$ 3138 3153 (2 9 55 5lssoh # 5hmhfwlrq i # #4 .+] /# 5lssoh #318 9s 0 s 9 ,1 # # 6hw # 9 287 .4 9 :3 g% 9 ,1 ,qsxw # 9r o w d j h ; 9 d 9 287 2 d 7 2xwsxw # 9r o w d j h 7hpshudwxuh # &rhiilflhqw , 287 # #63 p$ 073 & # # 7r s w # #;8 & ? 433 ssp 2 & ,olp 6kruw # &xuuhqw # /lplw 9 287 # #3 9 83 p$ 5 3' &( # 3xoo 0 grzq # 5hvlvwdqfh 518 8 43 0 w 9 &(+ &( # ,qsxw # 9r o w d j h # + 418 9 ,1 9 9 &(/ &( # ,qsxw # 9r o w d j h # / 3 3158 9 hq 2xwsxw # 1rlvh %: # #43 +] # ~ #433 n+] 63 m 9upv
r1111n 6 electrical characteristics by output voltage 7r s w # #58 & output current i out (ma) output voltage condition min. 418# # 9 287 # #41: 433 41;# # 9 287 # #813 9 ,1 # 0# 9 287 # #413 9 483 7r s w # #58 & dropout voltage v dif (v) output voltage v out (v) condition min. typ. max. 418 318 419 317 41: 316 41;# # 9 287 # #41< 3193 4173 513# # 9 287 # #517 3168 31:3 518# # 9 287 # #51: 3157 3168 51;# # 9 287 # #616 3153 3163 617# # 9 287 # #813 , 287 # #433 p$ 314: 3159
r1111n 7 operation r1111nxx1a r1111nxx1b 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 ,q # wkhvh # ,&v /# ioxfwxdwlrq # ri # 2xwsxw # 9r o w d j h /# 9 287 # lv # ghwhfwhg # e\ # )hhg 0 edfn # 5hjlvwhuv # 5 4/# 5 5/# dqg # wkh # uhvxow # lv frpsduhg # zlwk # d # uhihuhqfh # yrowdjh # e\ # (uuru # $psolilhu /# vr # wkdw # d # frqvwdqw # yrowdjh # lv # rxwsxw 1# $ # fxuuhqw # olplw # flufxlw # iru 3urwhfwlrq # dw # vkruw # prgh # dqg # d # fkls # hqdeoh # flufxlw # duh # lqfoxghg 1
r1111n 8 test circuits r1111nxx1b series v dd 5 1 2 3 v out i out in out gnd ce 0.1 m f 2.2 m f r1111nxx1b series v dd 5 1 2 3 v out i ss in out gnd ce 0.1 m f 2.2 m f fig.1 standard test circuit fig.2 supply current test circuit r1111nxx1b series v dd 5 1 p. g 2 3 v out i out in out gnd ce r1111nxx1b series v dd 5 1 2 3 v out in out gnd i1 i2 ce 1 m f fig.3 ripple rejection, line transient response test circuit fig.4 load transient response test circuit
r1111n 9 typical characteristics 1) output voltage vs. output current r1111n181b r1111n301b 2.0 1.8 1.6 1.0 0.8 0.6 0.4 0.2 1.4 1.2 0.0 output current i out (ma) 0 200 300 400 500 100 output voltage v out (v) 3.8v 2.8v 2.3v v in = 2.1v topt = 25 c 3.5 2.5 1.5 1.0 0.5 2.0 3.0 0.0 output current i out (ma) 0 200 300 400 500 100 output voltage v out (v) 5.0v 4.0v 3.5v v in = 3.3v topt = 25 c r1111n401b r1111n501b 5.0 4.5 4.0 2.5 2.0 1.5 1.0 0.5 3.5 3.0 0.0 output current i out (ma) 0 200 300 400 500 100 output voltage v out (v) 6.0v 5.0v 4.5v v in = 4.3v topt = 25 c 6.0 5.0 3.0 2.0 1.0 4.0 0.0 output current i out (ma) 0 200 300 400 500 100 output voltage (v) 7.0v 6.0v 5.5v v in = 5.3v topt = 25 c 2) output voltage vs. input voltage r1111n181b r1111n301b 2.0 1.9 1.8 1.7 1.6 1.5 1.4 1.2 1.3 input voltage v in (v) 1.0 4.0 5.0 6.0 7.0 8.0 2.0 3.0 output voltage v out (v) i out = 1ma 30ma 50ma topt = 25 c 3.1 3.0 2.9 2.8 2.7 2.5 2.6 input voltage v in (v) 2.0 4.0 5.0 6.0 7.0 8.0 3.0 output voltage v out (v) topt = 25 c 30ma 50ma i out =1ma
r1111n 10 r1111n401b r1111n501b 4.5 4.0 3.5 3.0 2.5 intput voltage v in (v) 2.0 4.0 5.0 6.0 8.0 7.0 3.0 output voltage v out (v) i out = 1ma 30ma 50ma topt = 25 c 5.5 5.0 4.0 3.5 3.0 4.5 2.5 intput voltage v in (v) 2.0 4.0 5.0 6.0 8.0 7.0 3.0 output voltage v out (v) i out = 1ma 30ma 50ma topt = 25 c 3) dropout voltage vs. output current r1111n181b r1111n301b 1.20 1.00 0.80 0.60 0.40 0.20 0.00 output current i out (ma) 0 50 100 150 dropout voltage v dif (v) topt = 85 c 25 c -40 c 0.40 0.35 0.30 0.20 0.15 0.10 0.05 0.25 0.00 output current i out (ma) 0 50 100 150 dropout voltage v dif (v) topt = 85 c 25 c -40 c r1111n401b r1111n501b 0.40 0.35 0.30 0.25 0.20 0.15 0.00 0.05 0.10 output current i out (ma) 0 50 100 150 dropout voltage v dif (v) topt = 85 c 25 c -40 c 0.40 0.35 0.30 0.25 0.20 0.15 0.00 0.05 0.10 output current i out (ma) 0 50 100 150 dropout voltage v dif (v) topt = 85 c 25 c -40 c
r1111n 11 4) output voltage vs. temperature r1111n181b r1111n301b 1.90 1.88 1.86 1.80 1.78 1.76 1.74 1.72 1.84 1.82 1.70 temperature topt -50 0 25 50 100 75 -25 output voltage v out (v) v in = 2.8v i out = 30ma 3.10 3.08 3.06 3.00 2.98 2.96 2.94 2.92 3.04 3.02 2.90 temperature topt -50 0 25 50 100 75 -25 output voltage v out (v) i out = 30ma v in = 4.0v r1111n401b r1111n501b 4.10 4.08 4.06 4.00 3.98 3.96 3.94 3.92 4.04 4.02 3.90 temperature topt -50 0 25 50 100 75 -25 output voltage v out (v) i out = 30ma v in = 5.0v 5.10 5.08 5.06 5.00 4.98 4.96 4.94 4.92 5.04 5.02 4.90 temperature topt -50 0 25 50 100 75 -25 output voltage v out (v) i out = 30ma v in = 6.0v 5) supply current vs. input voltage r1111n181b r1111n301b 60 50 40 30 20 0 10 input voltage v in (v) 1.0 2.0 4.0 5.0 6.0 7.0 8.0 3.0 supply current i i ss m topt = 25 c 60 50 40 30 20 0 10 input voltage v in (v) 1.0 2.0 4.0 5.0 6.0 7.0 8.0 3.0 supply current i i ss m topt = 25 c
r1111n 12 r1111n401b r1111n501b 60 50 40 30 20 10 0 intput voltage v in (v) 1.0 4.0 5.0 6.0 7.0 8.0 2.0 3.0 supply current i ss m topt = 25 c 60 50 40 30 20 10 0 intput voltage v in (v) 1.0 4.0 5.0 6.0 7.0 8.0 2.0 3.0 supply current i ss m topt = 25 c 6) supply current vs. temperature r1111n181b r1111n301b 50 45 40 35 30 20 25 temperature topt ( c) -50 50 100 0 supply current i ss ( m a) v in = 2.8v 50 45 40 35 30 20 25 temperature topt ( c) -50 50 100 0 supply current i ss ( m a) v in = 4.0v r1111n401b r1111n501b 50 45 40 35 30 20 25 temperature topt ( c) -50 50 100 0 supply current i ss ( m a) v in = 5.0v 50 45 40 35 30 20 25 temperature topt ( c) -50 50 100 0 supply current i ss ( m a) v in = 6.0v
r1111n 13 7) dropout voltage vs. set output voltage r1111n 1b 0.8 0.9 1.0 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 1.0 2.0 3.0 4.0 5.0 i out = 150ma i out = 100ma i out = 50ma i out = 30ma i out = 10ma set output voltage vreg (v) dropout voltage v dif (v) topt = 25 8) ripple rejection vs. frequency r1111n181b r1111n181b 80 70 60 50 40 30 20 10 0 0.1 1 10 100 i out = 1ma i out = 30ma i out = 50ma frequuency f (khz) ripple rejection rr (db) v in = 2.8v dc + 0.5vp-p c out = tantal 1.0 m f 80 70 60 50 40 30 20 10 0 0.1 1 10 100 i out = 1ma i out = 30ma i out = 50ma frequuency f (khz) ripple rejection rr (db) v in = 2.8v dc + 0.5vp-p c out = tantal 2.2 m f r1121n301b r1121n301b 80 70 60 50 40 30 20 10 0 0.1 1 10 100 i out = 1ma i out = 30ma i out = 50ma frequuency f (khz) ripple rejection rr (db) v in = 4v dc + 0.5vp-p c out = tantal 1.0 m f 80 70 60 50 40 30 20 10 0 0.1 1 10 100 i out = 1ma i out = 30ma i out = 50ma frequuency f (khz) ripple rejection rr (db) v in = 4v dc + 0.5vp-p c out = tantal 2.2 m f
r1111n 14 r1111n401b r1111n401b 80 70 60 50 40 30 20 10 0 0.1 1 10 100 i out = 1ma i out = 30ma i out = 50ma frequeney f (khz) ripple rejection rr (db) v in = 5.0v dc + 0.5vp-p c out = tantal 1.0 m f 80 70 60 50 40 30 20 10 0 0.1 1 10 100 i out = 1ma i out = 30ma i out = 50ma frequeney f (khz) ripple rejection rr (db) v in = 5.0v dc + 0.5vp-p c out = tantal 2.2 m f 9) ripple rejection vs. input voltage (dc bias) r1111n301b r1111n301b 80 70 60 50 40 30 20 10 0 3.1 3.2 3.3 3.4 3.5 f = 400hz f = 1khz f = 10khz input voltage v in (v) ripple rejection rr (db) i out = 1ma c out = 2.2 m f 80 70 60 50 40 30 20 10 0 3.1 3.2 3.3 3.4 3.5 f = 400hz f = 1khz f = 10khz input voltage v in (v) i out = 10ma c out = 2.2 m f ripple rejection rr(db) r1111n301b 80 70 60 50 40 30 20 10 0 f = 400hz f = 1khz f = 10khz i out = 50ma c out = 2.2 m f 3.1 3.2 3.3 3.4 3.5 input voltage v in (v) ripple rejection rr(db)
r1111n 15 10) line transient response r1111n301b i out =30ma tr=tf=5 m s c out =tantalum 1.0 m f 2.8 2.9 3.0 3.1 3.2 3.3 3.4 time t ( m s) output voltage v out (v) input voltage v in (v) 0 20 40 60 80 100 120 0 1 6 5 4 3 2 input voltage output voltage r1111n301b i out =30ma tr=tf=5 m s c out =tantalum 2.2 m f 2.8 2.9 3.0 3.1 3.2 3.3 3.4 0 20 40 60 80 100 120 0 1 6 5 4 3 2 output voltage v out (v) input voltage v in (v) time t ( m s) input voltage output voltage r1111n301b i out =30ma tr=tf=5 m s c out =tantalum 4.7 m f 2.8 2.9 3.0 3.1 3.2 3.3 3.4 output voltage v out (v) input voltage v in (v) 0 20 40 60 80 100 120 0 1 6 5 4 3 2 time t ( m s) input voltage output voltage
r1111n 16 11) load transient response r1111n301b v in =4v c in =tantalum 1 m f c out =tantalum 1.0 m f 2.8 2.9 3.0 3.1 3.2 3.3 3.4 time t ( m s) output voltage v out (v) output current i out (ma) 02468 10 12 14 16 18 20 -150 -100 150 100 50 0 -50 output current output voltage r1111n301b v in =4v c in =tantalum 1 m f c out =tantalum 2.2 m f 2.8 2.9 3.0 3.1 3.2 3.3 3.4 02468 10 12 14 16 18 20 -150 -100 150 100 50 0 -50 time t ( m s) output voltage v out (v) output current i out (ma) output current output voltage r1111n301b v in =4v c in =tantalum 1 m f c out =tantalum 4.7 m f 2.8 2.9 3.0 3.1 3.2 3.3 3.4 02468 10 12 14 16 18 20 -150 -100 150 100 50 0 -50 time t ( m s) output voltage v out (v) output current i out (ma) output current output voltage
r1111n 17 technical notes :khq # xvlqj # wkhvh # ,&v /# frqvlghu # wkh # iroorzlqj # srlqwv = ,q # wkhvh # ,&v /# skdvh # frpshqvdwlrq # lv # pdgh # iru # vhfxulqj # vwdeoh # rshudwlrq # hyhq # li # wkh # ordg # fxuuhqw # lv # ydulhg 1# )ru wklv # sxusrvh /# eh # vxuh # wr # xvh # d # fdsdflwru # &287 # zlwk # jrrg # iuhtxhqf\ # fkdudfwhulvwlfv # dqg # (65 #+ (txlydohqw # 6hulhv # 5h 0 vlvwdqfh ,# ri # zklfk # lv # lq # wkh # udqjh # ghvfulehg # dv # iroorzv = v out i out v in v in ce gnd esr r1111n301b s.a. 3 1 2 5 ceramic capacitor 1 m f ceramic capacitor spectrum analyzer measuring circuit for white noise;r 1111n301b 7kh # uhodwlrqv # ehwzhhq # , 287 #+ 2xwsxw # &xuuhqw ,# dqg # (65 # ri # 2xwsxw # &dsdflwru # duh # vkrzq # ehorz 1# 7kh # frqglwlrqv zkhq # wkh # zklwh # qrlvh # ohyho # lv # xqghu #73 m 9 + $yj 1,# duh # pdunhg # dv # wkh # kdwfkhg # duhd # lq # wkh # judsk 1 + qrwh =# :khq # wkh # dgglwlrqdo # fhudplf # fdsdflwruv # duh # frqqhfwhg # wr # wkh # 2xwsxw # 3lq # zlwk # 2xwsxw # fdsdflwru # iru # skdvh # frp 0 shqvdwlrq /# wkh # rshudwlrq # pljkw # eh # xqvwdeoh 1# %hfdxvh # ri # wklv /# whvw # wkhvh # ,&v # zlwk # dv # vdph # h[whuqdo # frpsrqhqwv # dv rqhv # wr # eh # xvhg # rq # wkh # 3&% 1, ? phdvxulqj # frqglwlrqv! +4, 9 ,1 7 9 +5, )uhtxhqf\ # edqg =#43 +] # wr #4 0+] +6, 7hpshudwxuh =#58 & r1111n301b r1111n301b 100.0 10.0 1.0 0.1 0 100 50 150 output current i out (ma) esr ( w ) ceramic 1.0 m f 100.0 10.0 1.0 0.1 output current i out (ma) 0 100 50 150 esr ( w ) ceramic 2.2 m f
r1111n 18 0dnh # 9 '' # dqg # *1' # olqh # vxiilflhqw 1# :khq # wkh # lpshgdqfh # ri # wkhvh # lv # kljk /# wkh # qrlvh # pljkw # eh # slfnhg # xs # ru # qrw # zrun fruuhfwo\ 1 &rqqhfw # wkh # fdsdflwru # zlwk # d # fdsdflwdqfh # ri #4 m ) # ru # pruh # ehwzhhq # 9 '' # dqg # *1' # dv # forvh # dv # srvvleoh 1 6hw # h[whuqdo # frpsrqhqwv /# hvshfldoo\ # 2xwsxw # &dsdflwru /# dv # forvh # dv # srvvleoh # wr # wkh # ,&v # dqg # pdnh # zlulqj # vkruwhvw 1 typical application r1111nxx1a v out out in v dd gnd ce cap. cap. r1111nxx1b v out out in v dd gnd ce cap. cap.

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