jiangsu changjiang electron ics technology co., ltd 1a low dropout linear regulat or cjt1117b-xxx general description the cjt11 17b-xxx is a series of low dropout three-terminal regulator s with a dropout of 1.15v(typ.) at 1a output current. the cjt1117b-xxx series provides current limit ing and thermal shutdown. its circuit includes a trimmed bandgap. reference to assure output voltage accura cy to be within 1.5%. current limit is trimmed to ensure specified. out put current and controlled short-circui t current. on-chip thermal shutdown provides protection against any co mbination of overload and ambient temperature that would create excessive junction temperature. the cjt1117b-xxx has an adjustable ve rsion, that can provide the output voltage from 1.25v to 5v with only 2 external resistors. features z low dropout voltage: 1.15v(typ.) at 1a output current z trimmed current limit z on-chip thermal shutdown z three-terminal adjustable or fixed 1.25v,1.8v, 2.5v, 3.3v, 5v z operation junction temperature: -25 to125 applications z pc motherboard z lcd monitor z graphic card z dvd-video player z nic/switch z telecom modem z adsl modem z printer and other peripheral equipment www.cj-elec.com 1 d,mar,2016 sot C223 1. adj/gnd 2. output 3.in marking
ordering information package operating junction te mperature range part no. cjt1117b-adj cjt1117b-1.8 cjt1117b-2.5 cjt1117b-3.3 sot-223 -25 to 125 cjt1117b-5.0 aboslute maximum ratings (t a =25 unless otherwise noted) note: stresses greater than those listed under ? a bsolute maximum ratings ? may cause permanent damage to the device. these are stre ss ratings only, and functional of t he device at these or any other conditions beyond those indi cated under ?recommended operating cond itions? is not implied. exposure to ?absolute maximum rati ngs? for extended periods may affect device reliability. recommended operating conditions parameter symbol value unit input voltage v i 20 v thermal resistance from junction to ambien t r ja 100 /w junction temperature t j 150 storage temperature t stg -55~+150 lead temperature (solderi ng, 10s) t l 260 esd voltage (machine mod el) v esd 400 v parameter symbol value unit input voltage v i 15 v operating junction temperature t j -25 ~+125 www.cj-elec.com 2 maximum ratings dar6
v in 10v, t j =25 unless otherwise specified. paramet er symbol part no. test conditions min typ max unit i out =10ma, v in =3.23v 1.2 31 1.250 1.269 referenc e voltage v iroc cjt11 17b-adj 10ma i out 1a, 2.75v v in -v out 13.25v 1.2 25 1.250 1.275 v i out =10ma, v in =3.8v 1.773 1.8 1.8 27 cjt111 7b-1.8 10ma i out 1a, 3.3v v in 12v 1.764 1.8 1.8 36 i out =10ma, v in =4.5v 2.463 2.5 2.5 38 cjt111 7b-2.5 10ma i out 1a, 4v v in 12v 2.450 2.5 2.550 i out =10ma, v in =5.3v 3.251 3.3 3.3 50 cjt111 7b-3.3 10ma i out 1a, 4.8v v in 12v 3.234 3.3 3.3 66 i out =10ma, v in =7.0v 4.925 5.0 5.0 75 outpu t voltage v o cjt111 7b-5.0 10ma i out 1a, 6.5v v in 12v 4.9 5.0 5.1 v cjt11 17b-adj i out =10ma, 1. 5v v in -v out 12v 0.2 % cjt111 7b-1.8 i out =10ma, 1. 5v v in -v out 10.2v 7 cjt111 7b-2.5 i out =10ma, 1. 5v v in -v out 9.5v 7 cjt111 7b-3.3 i out =10ma, 1. 5v v in -v out 8.7v 7 line regulat ion lnr cjt1117b-5.0 i out =10ma, 1. 5v v in -v out 7v 10 mv cjt11 17b-adj 0.4 % cjt111 7b-1.8 7.2 cjt111 7b-2.5 10 cjt111 7b-3.3 13.2 load regulat ion ldr cjt1117b-5.0 v in -v out =1.5v , 10ma i out 1a 20 mv dropout vo ltage v d v ref =1%, i out =1.0a 1.3 v adju st pin current 60 120 a minimum load curre nt i l 1.5v v in -v out 12v (adj on ly) 1.7 5 a quiescen t current i q v in = v out +1.25v (a dj except) 10 ma ripple reject ion rr f=120hz,c out =22 ft antalum, v in -v out =3v, i out =1a 60 75 db temperature st ability 0.5 % long-ter m stability t a =125 , 1000h rs 0.3 % rms output n oise (% of vout) t a =25 , 10hz f 10 khz 0.003 % therm al shutdown hysteresis 25 electrical characteristics www.cj-elec.com 3 d,mar,2016
functional block diagram typical application circuit www.cj-elec.com 4 d,mar,2016
min . max. min. max. a ?? 1.800 ?? 0.071 a1 0.020 0.100 0.001 0.004 a2 1.500 1.700 0.059 0.067 b 0.660 0.840 0.026 0.033 b1 2.900 3.100 0.114 0.122 c 0.230 0.350 0.009 0.014 d 6.300 6.700 0.248 0.264 e 6.700 7.300 0.264 0.287 e1 3.300 3.700 0.130 0.146 e l 0.750 ?? 0.030 ?? 0 10 0 10 symbol dimensions in millimeters dimensions in inches 2.300(bsc) 0.091(bsc) sot-223 package outline dimensions sot-223 suggested pad layout www.cj-elec.com 5 d,mar,2016
sot-223 tape and reel www.cj-elec.com 6 c,may,2015
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