unisonic technologies co., ltd UZ1085 linear integrated circuit www.unisonic.com.tw 1 of 7 copyright ? 2014 unisonic technologies co., ltd qw-r102-013.i 3a adjustable/fixed low dropout linear regulator ? description the utc UZ1085-xx series are low dropout three-terminal regulators with 3a output current capability. these devices have been optimized for low voltage applications including vtt bus termination, where transient response and minimum input voltage are critical. current limit is trimmed to ensu re specified output current and controlled short-circuit current. on-chip thermal limiting provides protection against any combination of overload and ambient temperature that would create ex cessive junction temperatures. ? features *fast transient response *low dropout voltage at up to 3a *load regulation:0.05% typical *trimmed current limit *on-chip thermal limiting to-220 1 1 to-220f to-263 1 1 to-263-3 to-252 1 ? ordering information ordering number package pin assignment packing lead free halogen free 1 2 3 UZ1085l-xx-ta3-t UZ1085g-xx-ta3-t to-220 a/g o i tube UZ1085l-xx-tf3-t UZ1085g-xx-tf3-t to-220f a/g o i tube UZ1085l-xx-tn3-r UZ1085g-xx-tn3-r to-252 a/g o i tape reel UZ1085l-xx-tq2-t UZ1085g-xx-tq2-t to-263 a/g o i tube UZ1085l-xx-tq2-r UZ1085g-xx-tq2-r to-263 a/g o i tape reel UZ1085l-xx-tq3-t UZ1085g-xx-tq3-t to-263-3 a/g o i tube UZ1085l-xx-tq3-r UZ1085g-xx-tq3-r to-263-3 a/g o i tape reel note: 1. xx: output voltage, refer to marki ng information. 2. a: adj (for adjustable regulato r), g: gnd (for fixed regulator), o: v out , i: v in
UZ1085 linear integrated circuit unisonic technologies co., ltd 2 of 7 www.unisonic.com.tw qw-r102-013.i ? marking information package voltage code marking to-220 to-220f to-252 to-263 to-263-3 15 :1.5v 18 :1.8v 25 :2.5v 33 :3.3v 50 :5.0v ad:adj 1 utc UZ1085 xx voltage code date code l: lead free g: halogen free lot code ? block diagram
UZ1085 linear integrated circuit unisonic technologies co., ltd 3 of 7 www.unisonic.com.tw qw-r102-013.i ? absolute maximum ratings parameter symbol ratings unit input voltage v in 18 v junction temperature t j +125 c operating temperature t opr -40 ~ +85 c storage temperature t stg -40 ~ +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. ? thermal data parameter symbol ratings unit junction to ambient to-252 ja 118 c/w to-220/to-220f to-263/ to-263-3 62 junction to case to-252 jc 12 c/w to-220/to-263 to-263-3 4 to-220f 7.6 ? electrical characteristics (t a =25c, c out =22 f, unless otherwise specified.) for UZ1085-adj (adjustable) parameter symbol test conditions min typ max unit reference voltage v ref 1.5v (v in - v out ) 8.25v,10ma i out 3a 1.225 1.25 1.275 v line regulation v out (v out +1.5v) v in 12v, i out =10ma 0.005 0.2 % load regulation v out (v in - v out )=3v, 10ma i out 3a 0.05 0.5 % dropout voltage v d v ref %=1%, l out =3a 1.30 1.40 v current limit i limit (v in -v out )=2v 3.1 4 a adjust pin current i adj 35 120 a adjust pin current change i adj 1.5v (v in - v out ) 12v, 10ma i out 3a 0.2 5 a minimum load current i o ( min ) 1.5v (v in -v out ) 12v 10 ma quiescent current i q v in =12v 4 13 ma ripple rejection rr f=120hz,tantalum,(v in ?v out )=3v i out =3a 60 72 db thermal regulation t a =25c,30ms pulse 0.004 0.02 %/w temperature stability ? v out 0.5 % long-term stability ? v out t a =125c, 1000hr 0.03 1.0 % output noise(% of v out ) en t a =25c,10hz f 10khz 0.003 % thermal shutdown 150 c
UZ1085 linear integrated circuit unisonic technologies co., ltd 4 of 7 www.unisonic.com.tw qw-r102-013.i ? electrical characteristics (t a =25c, c out =22 f, unless otherwise specified.) for UZ1085-xx (fixed voltage) parameter symbol test conditions min typ max unit output voltage UZ1085-15 v out 3.0v v in 8.5v, 10ma i out 3a 1.470 1.5 1.530 v UZ1085-18 3.3v v in 8.8v, 10ma i out 3a 1.764 1.8 1.830 v UZ1085-25 4.0v v in 9.5v, 10ma i out 3a 2.450 2.5 2.550 v UZ1085-33 4.8v v in 10.3v, 10ma i out 3a 3.234 3.3 3.366 v UZ1085-50 6.5v v in 12v, 10ma i out 3a 4.900 5.0 5.100 v line regulation v out (v out +1.5v) v in 12v,i out =10ma 0.005 0.2 % load regulation v out (v in ? v out )=3v, 10ma Q i out 3a 0.05 0.5 % dropout voltage v d v ref %=1%, l out =3a 1.30 1.40 v current limit i limit (v in -v out )=2v 3.1 4 a minimum load current i o ( min ) 1.5v (v in -v out ) 12v 10 ma quiescent current i q v in =12v 4 13 ma ripple rejection rr f=120hz, tantalum, (v in -v out )=3v,i out =3a 60 72 db thermal regulation t a =25c,30ms pulse 0.004 0.02 %/w temperature stability v out t a =125c, 1000hr 0.5 % long-term stability v out 0.03 1.0 % output noise(% of v out ) en t a =25c,10hz f 10khz 0.003 % thermal shutdown 150 c
UZ1085 linear integrated circuit unisonic technologies co., ltd 5 of 7 www.unisonic.com.tw qw-r102-013.i ? typical application circuit v in v out gnd v in =9v + + 3.3v at 3a UZ1085-3.3 22 f 22 f
UZ1085 linear integrated circuit unisonic technologies co., ltd 6 of 7 www.unisonic.com.tw qw-r102-013.i ? typical characteristics d r o p o u t v o l t a g e ( v ) output voltage deviation (%) reference voltage (v) reference voltage (v) minmum load current (ma) adjust pin current ( a)
UZ1085 linear integrated circuit unisonic technologies co., ltd 7 of 7 www.unisonic.com.tw qw-r102-013.i ? typical characteristics(cont.) short-circuit current (a) ripple rejections (db) 10 0 15 0 50 0 10 15 20 5 0 70 60 50 80 90 100 110 maximum power dissipation case temperature (c) 120 130 140 150 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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