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unisonic technologies co., ltd LD1117E linear integrated circuit www.unisonic.com.tw 1 of 13 copyright ? 2010 unisonic technologies co., ltd qw-r102-040.a low drop fixed and adjustable positive voltage regulators ? description the utc LD1117E is a low dropout, 3-terminal positive voltage regulator designed to provide output current up to 1a. there are adjustable voltage version (v ref =1.25v) and various fixed voltage versions. ? features * low dropout voltage * suitable for scsi-2 active termination if v out set to 2.85v * output current up to 1.0a * built-in current limit and over temperature protection * available in 1%(at 25 c) and 2% in all temperature range * low current consumption ? ordering information ordering number lead free halogen free package d pin assignment packing LD1117El-xx-aa3- c - d LD1117Eg-xx-aa3- c - d sot-223 LD1117El-xx-ab3- c - d LD1117Eg-xx-ab3- c - d sot-89 LD1117El-xx-ta3- c - d LD1117Eg-xx-ta3- c - d to-220 LD1117El-xx-tf3- c - d LD1117Eg-xx-tf3- c - d to-220f LD1117El-xx-tn3- c - d LD1117Eg-xx-tn3- c - d to-252 LD1117El-xx-tq2- c - d LD1117Eg-xx-tq2- c - d to-263 LD1117El-xx-tq3- c - d LD1117Eg-xx-tq3- c - d to-263-3 a: goi b: ogi c: gio d: igo LD1117El-xx-s08- c - d LD1117Eg-xx-s08- c - d sop-8 gooixoox r: tape reel t: tube note: pin assignment: i:v in o:v out g:gnd
LD1117E linear integrated circuit unisonic technologies co., ltd 2 of 13 www.unisonic.com.tw qw-r102-040.a ? marking information package voltage code marking sot-89 sot-223 to-220 to-220f to-252 to-263 to-263-3 12 :1.2v 15 :1.5v 18 :1.8v 25 :2.5v 2j :2.85v 30 :3.0v 33 :3.3v 36 :3.6v 50 :5.0v ad :adj ? pin configuration of sop-8 1 nc v in gnd v out v out v out v out nc 2 3 4 5 6 7 8
LD1117E linear integrated circuit unisonic technologies co., ltd 3 of 13 www.unisonic.com.tw qw-r102-040.a ? block diagram
LD1117E linear integrated circuit unisonic technologies co., ltd 4 of 13 www.unisonic.com.tw qw-r102-040.a ? absolute maximum ratings (t a =25c) parameter symbol ratings unit dc input voltage v in 18 v power dissipation p d internally limited junction temperature t j +150 c storage temperature t stg -65 ~ +150 c note: absolute maximum ratings are those values beyond which the device could be permanently damaged. absolute maximum ratings are stress ratings only an d functional device operat ion is not implied. ? recommended operating ratings parameter symbol ratings unit input voltage v in 15 v operating junction temperature t j 0 ~ +125 c ? thermal data parameter symbol ratings unit sot-223 165 c/w sot-89 180 c/w sop-8 150 c/w to-252 112 c/w to-220 54 c/w junction to ambient to-263 ja 64 c/w sot-223 15 c/w sot-89 50 c/w sop-8 20 c/w to-252 12 c/w to-220 4 c/w junction to case to-263 jc 4 c/w
LD1117E linear integrated circuit unisonic technologies co., ltd 5 of 13 www.unisonic.com.tw qw-r102-040.a ? electrical characteristics (ta=25c, refer to the test circuits, t j =0 to 125c, co=10 f unless otherwise specified) for LD1117E-1.2 parameter symbol test conditions min typ max unit output voltage v out v in =3.2v, i out =10ma, t j =25 c 1.176 1.200 1.224 v output voltage v out v in =2.7 to 8v i out =10~1000ma 1.176 1.200 1.224 v line regulation v out v in =2.7 to 8v, i out =0ma 1 6 mv load regulation v out v in =2.7 i out =10~1000ma 9 12 mv temperature stability v out 0.5 % long term stability v out 1000 hrs, t j =125c 0.3 % operating input voltage v in i out =100ma 15 v quiescent current i q v in 10v 5 10 ma current limit i limit v in =6.2v, t j =25c 1000 ma minimum load current i o(min) v in =15v 2 5 ma output noise voltage en b=10hz to 10khz, t j =25c 100 v supply voltage rejection svr i out =40ma, f=120hz, t j =25c, v in =4.2v, v ripple =1vpp 60 75 db i out =100ma 1.00 1.10 i out =500ma 1.15 1.25 i out =800ma 1.20 1.30 dropout voltage v d i out =1a 1.20 1.30 v thermal regulation t a =25c, 30ms pulse 0.01 0.10 %/w for LD1117E-1.5 parameter symbol test conditions min typ max unit output voltage v out v in =3.5v, i out =10ma, t j =25c 1.470 1.500 1.530 v output voltage v out v in =3 to 8v i out =10~1000ma 1.470 1.500 1.530 v line regulation v out v in =3 to 8v, i out =0ma 1 6 mv load regulation v out v in =3v i out =10~1000ma 12 15 mv temperature stability v out 0.5 % long term stability v out 1000 hrs, t j =125 c 0.3 % operating input voltage v in i out =100ma 15 v quiescent current i q v in 10v 5 10 ma current limit i limit v in =6.5v, t j =25 c 1000 ma output noise voltage en b=10hz to 10khz, t j =25 c 100 v supply voltage rejection svr i out =40ma, f=120hz, t j =25 c, v in =4.5v, v ripple =1vpp 60 75 db i out =100ma 1.00 1.10 i out =500ma 1.15 1.25 i out =800ma 1.20 1.30 dropout voltage v d i out =1a 1.20 1.30 v thermal regulation t a =25 c, 30ms pulse 0.01 0.10 %/w
LD1117E linear integrated circuit unisonic technologies co., ltd 6 of 13 www.unisonic.com.tw qw-r102-040.a ? electrical characteristics(cont.) for LD1117E-1.8 parameter symbol test conditions min. typ. max. unit output voltage v out v in =3.8v, i out =10ma, t j =25 c 1.764 1.800 1.836 v output voltage v out v in =3.3 to 8v i out =10~1000ma 1.764 1.800 1.836 v line regulation v out v in =3.3 to 8v, i out =0ma 1 6 mv load regulation v out v in =3.3v i out =10~1000ma 15 18 mv temperature stability v out 0.5 % long term stability v out 1000 hrs, t j =125 c 0.3 % operating input voltage v in i out =100ma 15 v quiescent current i q v in 10v 5 10 ma current limit i limit v in =6.8v, t j =25 c 1000 ma output noise voltage en b=10hz to 10khz, t j =25 c 100 v supply voltage rejection svr i out =40ma, f=120hz, t j =25 c, v in =5.5v, v ripple =1vpp 60 75 db i out =100ma 1.00 1.10 i out =500ma 1.15 1.25 i out =800ma 1.20 1.30 dropout voltage v d i out =1a 1.20 1.30 v thermal regulation t a =25 c, 30ms pulse 0.01 0.10 %/w for LD1117E-2.5 parameter symbol test conditions min. typ. max. unit output voltage v out v in =4.5v, i out =10ma, t j =25 c 2.450 2.500 2.550 v output voltage v out v in =3.9 to 10v i out =10~1000ma 2.450 2.500 2.550 v line regulation v out v in =3.9 to 10v, i out =0ma 1 6 mv load regulation v out v in =3.9v i out =10~1000ma 20 25 mv temperature stability v out 0.5 % long term stability v out 1000 hrs, t j =125 c 0.3 % operating input voltage v in i out =100ma 15 v quiescent current i q v in 10v 5 10 ma current limit i limit v in =7.5v, t j =25 c 1000 ma output noise voltage en b=10hz to 10khz, t j =25 c 100 v supply voltage rejection svr i out =40ma, f=120hz, t j =25 c, v in =5.5v, v ripple =1vpp 60 75 db i out =100ma 1.00 1.10 i out =500ma 1.15 1.25 i out =800ma 1.20 1.30 dropout voltage v d i out =1a 1.20 1.30 v thermal regulation t a =25 c, 30ms pulse 0.01 0.10 %/w
LD1117E linear integrated circuit unisonic technologies co., ltd 7 of 13 www.unisonic.com.tw qw-r102-040.a ? electrical characteristics(cont.) for LD1117E-2.85 parameter symbol test conditions min typ max unit output voltage v out v in =4.85v, i out =10ma, t j =25 c 2.793 2.850 2.907 v output voltage v out v in =4.25 to 10v i out =10~1000ma 2.793 2.850 2.907 v line regulation v out v in =4.25 to 10v, i out =0ma 1 6 mv load regulation v out v in =4.25v i out =10~1000ma 23 28 mv temperature stability v out 0.5 % long term stability v out 1000 hrs, t j =125 c 0.3 % operating input voltage v in i out =100ma 15 v quiescent current i q v in 10v 5 10 ma current limit i limit v in =7.85v, t j =25 c 1000 ma output noise voltage en b=10hz to 10khz, t j =25 c 100 v supply voltage rejection svr i out =40ma, f=120hz, t j =25 c, v in =5.85v, v ripple =1vpp 60 75 db i out =100ma 1.00 1.10 i out =500ma 1.15 1.25 i out =800ma 1.20 1.30 dropout voltage v d i out =1a 1.20 1.30 v thermal regulation t a =25 c, 30ms pulse 0.01 0.10 %/w for LD1117E-3.0 parameter symbol test conditions min. typ. max. unit output voltage v out v in =5v, i out =10ma, t j =25 c 2.940 3.000 3.060 v output voltage v out v in =4.5 to 10v i out =10~1000ma 2.940 3.000 3.060 v line regulation v out v in =4.5 to 12v, i out =0ma 1 6 mv load regulation v out v in =4.5v i out =10~1000ma 24 30 mv temperature stability v out 0.5 % long term stability v out 1000 hrs, t j =125 c 0.3 % operating input voltage v in i out =100ma 15 v quiescent current i q v in 15v 5 10 ma current limit i limit v in =8v, t j =25 c 1000 ma output noise voltage en b=10hz to 10khz, t j =25 c 100 v supply voltage rejection svr i out =40ma, f=120hz, t j =25 c, v in =6v, v ripple =1vpp 60 75 db i out =100ma 1.00 1.10 i out =500ma 1.15 1.25 i out =800ma 1.20 1.30 dropout voltage v d i out =1a 1.20 1.30 v thermal regulation t a =25 c, 30ms pulse 0.01 0.10 %/w
LD1117E linear integrated circuit unisonic technologies co., ltd 8 of 13 www.unisonic.com.tw qw-r102-040.a ? electrical characteristics(cont.) for LD1117E-3.3 parameter symbol test conditions min. typ. max. unit output voltage v out v in =5.3v, i out =10ma, t j =25 c 3.234 3.300 3.366 v output voltage v out v in =4.75 to 10v i out =10~1000ma 3.234 3.300 3.366 v line regulation v out v in =4.75 to 15v, i out =0ma 1 6 mv load regulation v out v in =4.75v i out =10~1000ma 26 33 mv temperature stability v out 0.5 % long term stability v out 1000 hrs, t j =125 c 0.3 % operating input voltage v in i out =100ma 15 v quiescent current i q v in 15v 5 10 ma current limit i limit v in =8.3v, t j =25 c 1000 ma output noise voltage en b=10hz to 10khz, t j =25 c 100 v supply voltage rejection svr i out =40ma, f=120hz, t j =25 c, v in =6.3v, v ripple =1vpp 60 75 db i out =100ma 1.00 1.10 i out =500ma 1.15 1.25 i out =800ma 1.20 1.30 dropout voltage v d i out =1a 1.20 1.30 v thermal regulation t a =25 c, 30ms pulse 0.01 0.10 %/w for LD1117E-3.6 parameter symbol test conditions min. typ. max. unit output voltage v out v in =5.6v, i out =10ma, t j =25 c 3.528 3.600 3.672 v output voltage v out v in =5 to 10v i out =10~1000ma 3.528 3.600 3.672 v line regulation v out v in =5 to 15v, i out =0ma 1 6 mv load regulation v out v in =5v i out =10~1000ma 28 36 mv temperature stability v out 0.5 % long term stability v out 1000 hrs, t j =125 c 0.3 % operating input voltage v in i out =100ma 15 v quiescent current i q v in 15v 5 10 ma current limit i limit v in =8.6v, t j =25 c 1000 ma output noise voltage e n b=10hz to 10khz, t j =25 c 100 v supply voltage rejection svr i out =40ma, f=120hz, t j =25 c, v in =6.6v, v ripple =1vpp 60 75 db i out =100ma 1.00 1.10 i out =500ma 1.15 1.25 i out =800ma 1.20 1.30 dropout voltage v d i out =1a 1.20 1.30 v thermal regulation t a =25 c, 30ms pulse 0.01 0.10 %/w
LD1117E linear integrated circuit unisonic technologies co., ltd 9 of 13 www.unisonic.com.tw qw-r102-040.a ? electrical characteristics(cont.) for LD1117E-5.0 parameter symbol test conditions min. typ. max. unit output voltage v out v in =7v, i out =10ma, t j =25 c 4.900 5.000 5.100 v output voltage v out v in =6.5 to 15v i out =10~1000ma 4.900 5.000 5.100 v line regulation v out v in =6.5 to 15v, i out =0ma 1 6 mv load regulation v out v in =6.5v i out =10~1000ma 40 50 mv temperature stability v out 0.5 % long term stability v out 1000 hrs, t j =125 c 0.3 % operating input voltage v in i out =100ma 15 v quiescent current i q v in 15v 5 10 ma current limit i limit v in =10v, t j =25 c 1000 ma output noise voltage e n b=10hz to 10khz, t j =25 c 100 v supply voltage rejection svr i out =40ma, f=120hz, t j =25 c, v in =8v, v ripple =1vpp 60 75 db i out =100ma 1.00 1.10 i out =500ma 1.15 1.25 i out =800ma 1.20 1.30 dropout voltage v d i out =1a 1.20 1.30 v thermal regulation t a =25 c, 30ms pulse 0.01 0.10 %/w for LD1117E-adj parameter symbol test conditions min typ max unit reference voltage v ref v in -v out =2v, i out =10ma, t j =25 c 1.225 1.25 1.275 v reference voltage v ref v in -v out =1.4 to 10v i out =10~1000ma 1.225 1.25 1.275 v line regulation v out v in -v out =1.5 to 13.75v, i out =10ma 0.035 0.2 % load regulation v out v in -v out =1.5v i out =10~1000ma 1 % temperature stability v out 0.50 % long term stability v out 1000 hrs, t j =125 c 0.3 % operating input voltage v in 15 v adjustment pin current i adj v in 15v 60 120 a adjustment pin current change i adj v in -v out =1.4 to 10v, i out =10~1000ma 1 5 a minimum load current i o(min) v in =15v 2 5 ma current limit i limit v in -v out =5v, t j =25 c 1000 ma output noise (%vo) en b=10hz to 10khz, t j =25 c 0.003 % supply voltage rejection svr i out =40ma, f=120hz, t j =25 c, v in -v out =3v, v ripple =1vpp 60 75 db i out =100ma 1.00 1.10 i out =500ma 1.15 1.25 i out =800ma 1.20 1.30 dropout voltage v d i out =1a 1.20 1.30 v thermal regulation t a =25 c, 30ms pulse 0.01 0.10 %/w
LD1117E linear integrated circuit unisonic technologies co., ltd 10 of 13 www.unisonic.com.tw qw-r102-040.a ? typical applications fig.1 negative supply in gnd utc LD1117E- 2.85v + 22f 10f + 110 110 110 110 18-27 lines 4.75v to 5.25v out fig.2 active terminator for scsi-2 bus fig.3 circuit for increasing output voltage
LD1117E linear integrated circuit unisonic technologies co., ltd 11 of 13 www.unisonic.com.tw qw-r102-040.a ? application note of LD1117E adjustable the LD1117E adjustable has a reference voltage of between the out and adj pins. i adj is 60 a typ. (120a max.) and i adj is 1 a typ. (5a max.). r 1 is normally fixed to 120 . from figure 4 we obtain: v out =v ref +r 2 (i adj +i r1 )=v ref + r 2 (i adj +v ref /r 1 )=v ref (1+r 2 /r 1 ) + r 2 x i adj . usually r 2 value is in the range of few k ? , so the r 2 x i adj product could be neglected; then the above expression becomes: v out =v ref (1+r 2 /r 1 ) for better load regulation, realize a good kelvin connection of r 1 and r 2 is important. particularly r 1 connection must be realized very close to out and adj pin, while r 2 ground connection must be placed as near as possible to the negative load pin. ripple rejection can be improved by introducing a 10 f electrolytic capacitor placed in parallel to the r 2 resistor (see fig. 5) in out adj utc LD1117E + + 10f 10f r 1 120 ? v in v out v ref r 2 fig.4 adjustable output vo ltage application circuit in out adj utc LD1117E + + 10f 10f r 1 120 ? v in v out v ref r 2 + 10f fig.5 adjustable output voltage applic ation with improved ripple rejection.
LD1117E linear integrated circuit unisonic technologies co., ltd 12 of 13 www.unisonic.com.tw qw-r102-040.a ? typical characteristics output voltage deviation (%) dropout voltage (v) input current vs. temperature 2 temperature(c) -50 -25 0 25 50 75 100 125 3 4 5 6 1 short-circuit current 0 0 21012 0.4 0.8 1.2 input/output differential (v) 1.6 2.0 2.4 468 0 output voltage (v) output voltage (v)
LD1117E linear integrated circuit unisonic technologies co., ltd 13 of 13 www.unisonic.com.tw qw-r102-040.a ? typical characteristics (cont.) reference voltage, v ref (v) power (w) ripple rejection (db) adjust pin current (a) utc assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all utc products described or contained herein. utc products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. the information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.

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