1a low dropout linear regulator general description the cj1117 is a series of low dropout three-terminal r egulators 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 with in 1%. current limit is tr immed to ensure specified output current and controlled short-circuit current. on-chip thermal shutdown provides protection against any combination of overload and ambient temperature t hat would create excessive junction temperature. the cj1117 has an adjustable version, that can provi de the output voltage from 1.25v to 5 v 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 1 of 8 sales@zpsemi.com www.zpsemi.com cj1117 series
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 adj/gnd output input 2 of 8 sales@zpsemi.com www.zpsemi.com cj1117 series
1a low dropout linear regulator functional block diagram figure 3. functional block diagram of cj1117 3 of 8 sales@zpsemi.com www.zpsemi.com cj1117 series
1a low dropout linear regulator ordering information package operating junction temperature range p art 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 4 of 8 sales@zpsemi.com www.zpsemi.com cj1117 series
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: stresses greater than those listed under ?a bsolute maximum ratings? may cause permanent damage to the device. these are stress ratings only, and functional of the device at thes e or any other conditions beyond those indicated under ?recommended operating conditions? is no t implied. 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 5 of 8 sales@zpsemi.com www.zpsemi.com cj1117 series
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, v in -v out =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 10 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 6 of 8 sales@zpsemi.com www.zpsemi.com cj1117 series
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 =22 f 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-89 sot-223 to-252/251 to-220 to-263 25 15 10 4.5 4 /w thermal shutdown junction temperature 150 thermal shutdown hysteresis 25 * with package soldering to copper area ove r b ackside ground plane or internal power plane r q ja can vary from 4 6 . c /w to >90 . c /w depending on mounting technique and the size of the copper area. 7 of 8 sales@zpsemi.com www.zpsemi.com cj1117 series
1a low dropout linear regulator typical applications 8 of 8 sales@zpsemi.com www.zpsemi.com cj1117 series
|
