unisonic technologies co., ltd uz1086 linear integrated circuit www.unisonic.com.tw 1 of 6 copyright ? 2012 unisonic technologies co., ltd qw-r102-008,k 1.5a adjustable/fixed low dropout linear regulator ? description the utc uz1086 and uz1086 -1.8v, 2.5v, 2.85v, 3.3v and 5v are low dropout three-terminal regulators with 1.5a output current capability. these devices have bee n optimized for low voltage where transient response and minimum input voltage are critical. the 2.85v version is designed specifically to be used in active terminators for scsi bus. 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 temperatures that would create excessive junction temperatures. unlike pnp type regulators where up to 10% of the output current is wasted as quiescent curr ent, the quiescent current of the uz1086 flows into the load, increasing efficiency. ? features * low dropout voltage * load regulation: 0.05% typical * trimmed current limit * on-chip thermal limiting * three-terminal adjustable or fixed 1.8v, 2.5v, 2.85v, 3.3v, 5v ? ordering information ordering number package pin assignment packing lead free halogen-free 1 2 3 uz1086l-xx-aa3-r uz1086g-xx-aa3-r sot-223 a/g o i tape reel uz1086l-xx-ta3-t uz1086g-xx-ta3-t to-220 a/g o i tube uz1086l-xx-tn3-r uz1086g-xx-tn3-r to-252 a/g o i tape reel UZ1086L-XX-TN3-T uz1086g-xx-tn3-t to-252 a/g o i tube uz1086l-xx-tq2-r uz1086g-xx-tq2-r to-263 a/g o i tape reel uz1086l-xx-tq2-t uz1086g-xx-tq2-t to-263 a/g o i tube uz1086l-xx-tq3-r uz1086g-xx-tq3-r to-263-3 a/g o i tape reel uz1086l-xx-tq3-t uz1086g-xx-tq3-t to-263-3 a/g o i tube note: 1. xx: output voltage, refer to marki ng information. 2. a: adj (for adjustable regulat or), g: gnd (for fixed regulator)
uz1086 linear integrated circuit unisonic technologies co., ltd 2 of 6 www.unisonic.com.tw qw-r102-008,k ? marking information package voltage code marking to-220 to-252 to-263 to-263-3 18 :1.8v 25 :2.5v 2j :2.85v 33 :3.3v 50 :5.0v ad :adj 123 utc uz1086 xx voltage code date code l: lead free g: halogen free lot code sot-223
uz1086 linear integrated circuit unisonic technologies co., ltd 3 of 6 www.unisonic.com.tw qw-r102-008,k ? absolute maximum ratings parameter symbol ratings unit input voltage v in 7.5 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 be yond which the device could be permanently damaged. absolute maximum ratings are stress ratings only and functional device oper ation is not implied. ? thermal data parameter symbol ratings unit junction to case to-252 jc 12 c/w to-220 4 c/w to-263 4 c/w sot-223 15 c/w ? electrical characteristics (v in 7v, t j =25c, unless otherwise specified.) parameter symbol test conditions min. typ. max. unit reference voltage v ref * 1.5v (v in -v out ) 5.75v 10ma i out 1a 1.225 1.25 1.275 v output voltage uz1086-1.8 v out * 10ma i out 1a 3.3v v in 7v 1.764 1.80 1.836 v uz1086-2.5 * 4v v in 7v 2.450 2.50 2.550 v uz1086-2.85 * 4.35v v in 7v 2.793 2.85 2.907 v uz1086-3.3 * 4.8v v in 7v 3.234 3.30 3.366 v uz1086-5.0 6.5v v in 7v 4.900 5.00 5.100 v line regulation (note1,2) v out *(v out +1.5v) v in 7v,i out =10ma 0.005 0.2 % load regulation (note1,2) v out *v in -v out =2v, 10ma i out 1a 0.05 0.5 % dropout voltage v d *i out =1.5a 1.30 1.50 v current limit i limit *v in -v out =2v 1.6 2 a adjust pin current i adj * 35 120 a adjust pin current change i adj * 1.5v (v in - v out ) 5.75v, 10ma i out 1a 0.2 5 a minimum load current i o ( min ) *1.5v (v in -v out ) 5.75v 10 ma quiescent current i q *v in =v out +1.25v 4 13 ma ripple rejection rr f=120hz, c out =22 f, tantalum v in -v out =3v, i out =1.5a 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, 1000hrs 0.03 1.0 % rms output noise v out t a =25c, 10hz f 10khz 0.003 % thermal shutdown junction temperature 155 c thermal shutdown hysteresis 10 c note: 1. see thermal regulation specific ations for changes in output voltag e due to heating effects. load and line regulation are measured at a c onstant junction temperature by low duty cycle pulse testing. 2. line and load regulation are guaranteed up to t he maximum power dissipation. power dissipation is determined by input/output different ial and the output current. guaranteed maximum output power will not be available over the full input/output voltage range. * stand for specifications which apply over the designed operating temperature range.
uz1086 linear integrated circuit unisonic technologies co., ltd 4 of 6 www.unisonic.com.tw qw-r102-008,k ? typical application circuit r1 124 10 f 22 f r2 24.9 1.5v at 1.5a v in =3.3v v in v out adj v out =v ref (1+r2/r1)+i adj *r2 10 f 22 f 2.85v at 1.5a v in =5v v in v out gnd uz1086-2.85 uz1086 + + + +
uz1086 linear integrated circuit unisonic technologies co., ltd 5 of 6 www.unisonic.com.tw qw-r102-008,k ? typical characteristics 00.3 0.6 0.9 1.2 0 0.5 0.6 0.7 0.8 0.9 fig. 1 dropout voltage vs. output current dropout voltage (v) output current (a) 1.5 1.0 1.1 1.2 1.3 1.4 1.5 -75 -25 25 75 125 -50 -0.1 0 -0.05 50 fig. 2 load regulation vs. temperature dropout voltage deviation(%) junction temperature(c) 175 0 100 0.05 150 0.1 -0.15 -0.2 i=1a -75 -25 25 75 125 -50 1.22 0 1.225 50 fig. 3 reference voltage vs. temperature reference voltage(v) junction temperature(c) 175 1.23 100 1.235 150 1.25 1.21 1.2 1.205 1.215 1.245 1.24 -75 -25 25 75 125 -50 3.4 0 3.45 50 fig. 4 output voltage vs. temperature reference voltage(v) junction temperature(c) 175 3.5 100 3.55 150 3.7 3.3 3.2 3.25 3.35 3.65 3.6 v out set with 1% resistors v out =3.6v v out =3.3v uz1086 adjustable only -75 -25 25 75 125 -50 2 050 fig. 5 minimum load current vs. temperature minimum load current (ma) junction temperature(c) 175 3 100 150 5 1 0 4 -75 -25 25 75 125 -50 40 0 50 50 fig. 6 adjust pin current vs. temperature adjust pin current ( a) junction temperature(c) 175 60 100 70 150 100 20 0 10 30 90 80 note1.uz1086 only
uz1086 linear integrated circuit unisonic technologies co., ltd 6 of 6 www.unisonic.com.tw qw-r102-008,k ? typical characteristics(cont.) short- circuit current (a) r i p p l e r e j e c t i o n ( d b ) 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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