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| jiangsu changjiang electronics technology co., ltd 1a low dropout linear regulator general description the cj1117 is a series of low dropout three-terminal regulators with a dropout of 1.15v at 1a output current. the cj1117 series provides current limiting and thermal shutdown. its circuit includes a trimmed bandgap reference to assure output voltage accuracy to be within 1%. current limit is trimmed to ensure specified output current and controlled short-circuit current. on-chip thermal shutdown provides protection against any combination of overload and ambient temperature that would create excessive junction temperature. the cj1117 has an adjustable version, that can provide the output voltage from 1.25v to 12v with only 2 external resistors. the cj1117 series is available in the industry standard sot-223,sot-89,to-220,to-252 and to-263 power packages. features ? low dropout voltage: 1.15v at 1a output current ? trimmed current limit ? on-chip thermal shutdown ? three-terminal adjustable or fixed 1.5v, 1.8v, 2.5v, 3.3v, 5v ? operation junction temperature: 0 to125 applications ? pc motherboard ? lcd monitor ? graphic card ? dvd-video player ? nic/switch ? telecom modem ? adsl modem ? printer and other peripheral equipment to-251 figure 1. package types of cj1117
jiangsu changjiang electronics technology co., ltd 1a low dropout linear regulator pin configurations t package a package (sot-223) (sot-89) p package u package (to-220) (to-252) b package d package (to-263) (to-251) figure 2. pin configurations of cj1117 jiangsu changjiang electronics technology co., ltd 1a low dropout linear regulator functional block diagram figure 3. functional block diagram of cj1117 jiangsu changjiang electronics technology co., ltd 1a low dropout linear regulator ordering information package temperature range part number cjt1117-adj cjt1117-1.5 cjt1117-1.8 cjt1117-2.5 cjt1117-3.3 sot-223 0 to 125 cjt1117-5.0 CJA1117-ADJ cja1117-1.5 cja1117-1.8 cja1117-2.5 cja1117-3.3 sot-89 0 to 125 cja1117-5.0 cjp1117-adj cjp1117-1.5 cjp1117-1.8 cjp1117-2.5 cjp1117-3.3 to-220 0 to 125 cjp1117-5.0 cju1117-adj cju1117-1.5 cju1117-1.8 cju1117-2.5 cju1117-3.3 to-252 0 to 125 cju1117-5.0 cjb1117-adj cjb1117-1.5 cjb1117-1.8 cjb1117-2.5 cjb1117-3.3 to-263 0 to 125 cjb1117-5.0 cjd1117-adj cjd1117-1.5 cjd1117-1.8 cjd1117-2.5 cjd1117-3.3 to-251 0 to 125 cjd1117-5.0 cj 1117- z adj: adjustable output package circuit type 1.5: fixed output 1.5v t: sot-223 u: to-252 1.8: fixed output 1.8v a: sot-89 b: to-263 2.5: fixed output 2.5v p: to-220 d: to-251 3.3: fixed output 3.3v 5.0: fixed output 5.0v jiangsu changjiang electronics technology co., ltd 1a low dropout linear regulator aboslute maximum ratings (note 1) parameter value unit v in 20 v maximum junction temperature 150 storage temperature range -65 to 150 lead temperature (soldering, 10sec.) 300 esd (machine model) 600 v note 1: su=tresses greater than those listed under ?absolute maximum ratings? may cause permanent damage to the device. these are stress ratings only, and functional of the device at these or any other conditions beyond those indicated under ?recommended operating conditions? is not im plied. exposure to ?absolute maximum ratings? for extended periods may affect device reliability. recommended operating conditions parameter min max unit v in 15 v operating junction temperature range 0 125 jiangsu changjiang electronics technology co., ltd 1a low dropout linear regulator electrical characteristics operating conditions: v in 10v, t j =25 unless otherwise specified. parameter conditions min typ max unit reference voltage cj1117-adj i out =10ma, =2v, 10ma i out 1a, 1.4v v in -v out 8v, p maximum power dissipation 1.238 1.225 1.250 1.250 1.262 1.270 v cj1117-1.5,i out =10ma, v in =3.5v 10ma i out 1a, 3.0v v in 10v 1.485 1.470 1.5 1.5 1.515 1.530 v cj1117-1.8, i out =10ma, v in =3.8v 10ma i out 1a, 3.2v v in 10v 1.782 1.746 1.8 1.8 1.818 1.854 v cj1117-2.5, i out =10ma, v in =4.5v 10ma i out 1a, 3.9v v in 10v 2.475 2.450 2.5 2.5 2.525 2.550 v cj1117-3.3, i out =10ma, v in =5.0v 10ma i out 1a, 4.75v v in 10v 3.267 3.235 3.3 3.3 3.333 3.365 v output voltage cj1117-5.0, i out =10ma, v in =7.0v 10ma i out 1a, 6.5v v in 12v 4.950 4.900 5.0 5.0 5.050 5.100 v cj1117-adj iout=10ma, 1.5v v in -v out 10v 0.035 0.2 % cj1117-1.5 iout=10ma, 1.5v v in -v out 10v 1 6 mv cj1117-1.8 iout=10ma, 1.5v v in -v out 10v 1 6 mv cj1117-2.5 iout=10ma, 1.5v v in -v out 10v 1 6 mv cj1117-3.3 iout=10ma, 1.5v v in -v out 10v 1 6 mv line regulation cj1117-5.0 iout=10ma, 1.5v v in -v out 10v 1 6 mv cj1117-adj v in -v out =2v, 10ma i out 1a 0.2 0.4 % cj1117-1.5 v in -v out =2v, 10ma i out 1a 1 10 mv cj1117-1.8 v in -v out =2v, 10ma i out 1a 1 10 mv cj1117-2.5 v in -v out =2v, 10ma i out 1a 1 10 mv cj1117-3.3 v in -v out =2v, 10ma i out 1a 1 10 mv load regulation cj1117-5.0 v in -v out =2v, 10ma i out 1a 1 15 mv jiangsu changjiang electronics technology co., ltd 1a low dropout linear regulator electrical characteristics (continued) operating conditions: v in 10v, t j =25 unless otherwise specified. parameter conditions min typ max unit ? v ref =1%, i out =0.1a 1.00 1.1 v ? v ref =1%, i out =0.5a 1.08 1.18 v dropout voltage ? v ref =1%, i out =1.0a 1.15 1.25 v current limit v in -v out =2v 1.25 1.35 a adjust pin current 60 120 a adjust pin current change 1.4v v in -v out 10v, 10ma i out 1a 0.2 5 a minimum load current (adj) 1.5v v in -v out 10v (adj only) 1.7 5 ma quiescent current v in = v out +1.25v 5 10 ma ripple rejection f=120hz, c out =22f tantalum, v in -v out =3v, i out =1a 60 75 db temperature stability 0.5 % long-term stability ta=125 , 1000hrs 0.3 % rms output noise (% of v out ) ta=25 , 10hz f 10khz 0.003 % thermal resistance, junction to case sot-223 to-252/251 to-220 to-263 15 10 4.5 4 /w thermal shutdown junction temperature 150 thermal shutdown hysteresis 25 jiangsu changjiang electronics technology co., ltd 1a low dropout linear regulator typical characteristics cj1117 jiangsu changjiang electronics technology co., ltd 1a low dropout linear regulator typical characteristics cj1117 jiangsu changjiang electronics technology co., ltd 1a low dropout linear regulator typical characteristics cj1117 jiangsu changjiang electronics technology co., ltd 1a low dropout linear regulator typical applications |
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