unisonic technologies co., ltd uz1084 linear integrated circuit www.unisonic.com.tw 1 of 6 copyright ? 2012 unisonic technologies co., ltd qw-r102-010,k 5a a djustable/fixed low dropout linear regulator ? description the utc uz1084 -adj/fixed voltages are low dropout three-terminal regulators with 5a 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. on-chip thermal limiting provides protection against any combination of overload and ambien t temperature that would create excessive junction temperatures. ? features *fast transient response *low dropout voltage at up to 5a *load regulation : 0.5% typical *on-chip thermal limiting ? applications *desktop pcs, risc and embedded processors? supply *gti, sstl logic reference bus supply *low voltage v cc logic supply *battery-powered circuitry *post regulator for switching supply *cable and adsl modems? dsp core supply *set top boxes and web boxes modules? supply 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 uz1084l-xx-ta3-t uz1084g-xx-ta3-t to-220 a/g o i tube uz1084l-xx-tf3-t uz1084g-xx-tf3-t to-220f a/g o i tube uz1084l-xx-tn3-r uz1084g-xx-tn3-r to-252 a/g o i tape reel UZ1084L-XX-TN3-T uz1084g-xx-tn3-t to-252 a/g o i tube uz1084l-xx-tq2-r uz1084g-xx-tq2-r to-263 a/g o i tape reel uz1084l-xx-tq2-t uz1084g-xx-tq2-t to-263 a/g o i tube uz1084l-xx-tq3-r uz1084g-xx-tq3-r to-263-3 a/g o i tape reel uz1084l-xx-tq3-t uz1084g-xx-tq3-t to-263-3 a/g o i tube note: 1. xx: output voltage, re fer to marking information. 2. a: adj (for adjustable regulato r), g: gnd (for fixed regulator), o:v out , i:v in
uz1084 linear integrated circuit unisonic technologies co., ltd 2 of 6 www.unisonic.com.tw qw-r102-010,k ? 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 123 utc uz1084 xx voltage code date code l: lead free g: halogen free lot code
uz1084 linear integrated circuit unisonic technologies co., ltd 3 of 6 www.unisonic.com.tw qw-r102-010,k ? absolute maximum ratings (t a =25 ) parameter symbol ratings unit dc input voltage v in 15 v operating temperature t opr 0 ~ +125 storage temperature t stg -65 ~ 150 note: absolute maximum ratings are those values beyond which the device coul d 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 ambient to-252 ja 112 c/w to-220 54 c/w to-263/to-263-3 64 c/w junction to case to-252 jc 12 c/w to-220 4 c/w to-263/to-263-3 4 c/w ? electrical characteristics for uz1084-adjustable (operating conditions: 4.75 v in 5.25, t j =25 unless otherwise specified) parameter symbol test conditions min typ max unit reference voltage v ref i out =10ma 1.23 1.25 1.27 v line regulation v out l out =10ma 0.5 2 % load regulation v out 10ma l out 5a 0.5 2.5 % dropout voltage v d v ref %=2%, lo=5a 1.5 v current limit i limit (v in -v out )=2v 5.5 6.5 a adjust pin current i adj 35 100 a adjust pin current change i adj 1.5v (v in -v out ) 5.75v, 10ma l out 5a 5 a minimum load current i o ( min ) 1.5v (v in -v out ) 5.75v 5 10 ma thermal shutdown 150 c for uz1084-xx (fixed voltage) (operating conditions: 1.5v (v in -v out ) 5.75v, t j =25 unless otherwise specified) parameter symbol test conditions min. typ max unit output voltage v out uz1084-15 l out =10ma 1% 1.485 1.5 1.515 v 2% 1.470 1.5 1.530 v uz1084-18 l out =10ma 1% 1.782 1.8 1.818 v 2% 1.764 1.8 1.836 v uz1084-25 l out =10ma 1% 2.475 2.5 2.525 v 2% 2.450 2.5 2.550 v uz1084-33 l out =10ma 1% 3.267 3.3 3.333 v 2% 3.234 3.3 3.366 v uz1084-50 l out =10ma 1% 4.950 5.0 5.050 v 2% 4.900 5.0 5.100 v line regulation v out i out =10ma 0.5 2 % load regulation v out 10ma l out 5a 0.5 2.5 % dropout voltage v d v ref %=2%, l out =5a 1.5 v current limit i limit (v in -v out )=2v 5.5 6.5 a minimum load current i adj 1.5v (v in -v out ) 5.75v 5 10 ma quiescent current i q v in =12v 10 13 ma thermal shutdown 150 c
uz1084 linear integrated circuit unisonic technologies co., ltd 4 of 6 www.unisonic.com.tw qw-r102-010,k ? typical application circuits adjustable voltage regulator v in v out adj 22 f v in =12v + r1 124 r2 124 22 f + v out =1.5v at 5a v out =v ref (1+r2/r1)+i adj* r2 uz1084-adj fixed voltage regulator + + gnd v in v out uz1084-1.5 v in =3.3v v out =1.5 v at 5a 10f 22f
uz1084 linear integrated circuit unisonic technologies co., ltd 5 of 6 www.unisonic.com.tw qw-r102-010,k ? typical characteristics quiescent current, iq (ma) temperature ( ) output voltage, v out (v) 040 output voltage v.s. temperature 20 60 80 3.38 3.20 3.36 3.34 3.32 3.30 3.28 3.26 3.24 3.22 3.40 -40 -20 100 120 v out =3.3v temperature ( ) 0 40 20 60 80 2 4 3 -40 -20 100 120 quiescent current v.s. temperature 5 6 7 8 output current, i out (a) 0 dropout voltage, v d (v) 1 3 dropout voltage vs. output current 2 45 t=25 t=125 t=-25 adjust pin current (a) temperature ( ) short-circuit current (a) 040 short-circuit current v.s. temperature 20 60 80 4 6 5 8 -40 -20 100 120 temperature ( ) 040 20 60 80 10 30 20 -40 -20 100 120 adjust pin current v.s. temperature 40 50 60 70 7 minimum load current (ma) temperature ( ) 040 20 60 80 1 3 2 -40 -20 100 120 minimum load current v.s. temperature 4 5 1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1 1.0 0.9 0.8 0.7 0.6 0.5 1.9 2.0 ? typical characteristics(cont.)
uz1084 linear integrated circuit unisonic technologies co., ltd 6 of 6 www.unisonic.com.tw qw-r102-010,k 1.230 1.225 reference voltage (v) reference voltage vs. temperature 1.240 1.235 1.250 1.245 1.260 1.255 1.270 1.265 temperature ( ) 0 40 20 60 80 -40 -20 100 120 output voltage deviation(%) load regulation vs. temperature temperature ( ) 040 20 60 80 -40 -20 100 120 0 0.05 0.10 -0.10 -0.05 -0.20 -0.15 i=5a 90 10 70 0 10 100 1k 10k 100k ripple rejections(db) frequency(hz) ripple rejection vs. frequency 80 60 50 40 30 20 v in -v out =3v, 0.5 < vripple < 2v i out =0.1a 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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