unisonic technologies co., ltd ucv676/a linear i ntegrated circuit www.unisonic.com.tw 1 of 9 copyright ? 20 13 unisonic technologies co., l td qw - r102 - 051. b 400ma low - drop voltage regulator ? description the utc ucv676/a is a low dropout voltage regulator with a 400ma output current used in harsh automotive environments. it can be used in wide input voltage and operating temperature ranges. it has a high peak i nput voltage tolerance and reverse input voltage protection. built - in heat protection circuit, current limiting circuit and inhibit control circuit. the utc ucv676/a family is available in to -2 63-5 and to -252-4 surface mount packages. the output is stable over a wide output capacitance and esr range. ? features * 2.5v and 1.8v 4% output voltage * 3.3v, 5.0v, and adjustable voltage version (from 2.5v ~ 20v) 4% or 2% output voltage * 400ma output current * 500mv (max) dropout voltage (5.0v output) * inhibit c ontrol input * very low current consumption * fault protection +45v peak transient voltage overcurrent overheat to-252-4 1 1 to-263-5 ? ordering information ordering number package packing lead f ree halogen free ucv676 l -t q 5 -r ucv676g -t q 5 -r to -263-5 tape reel ucv676 l - t q 5 - t ucv676g - t q 5 - t to - 263 - 5 tube UCV676A l - t q 5 - r UCV676Ag - t q 5 - r to - 263 - 5 tape reel UCV676A l -t q 5 -t UCV676Ag -t q 5 -t to -263-5 tube ucv676 l -tn 4 -r ucv676 g -tn 4 -r to -252-4 t ape reel ucv676 l - tn 4 - t ucv676 g - tn 4 - t to - 252 - 4 tube UCV676A l - tn 4 - r UCV676A g - tn 4 - r to - 252 - 4 t ape reel ucv6 76a l -tn 4 -t UCV676A g - tn 4 -t to -252-4 tube ucv676l-tn4-r (1)packing type (2)package type (3)lead plating (1) t: tube, r: tape reel (2) tn4: to-252-4, tq5: to-263-5 (3) l: lead free, g: halogen free free datasheet http://
ucv676/a linear integrated circuit unisonic technologies co., ltd 2 of 9 www.unisonic.com.tw qw - r102 - 051. b ? pin description pin no . pin name description 1 v i n input; power supply 2 inh inhibit; set low - to inhibit 3 gnd ground 4 nc/va not connected for fixed voltage version / voltage adj ust input for adjustable voltage version; use an external voltage divider to set the output voltage 5 v out output: bypass with a capacitor to gnd ? block diagram fixed voltage version v in inh nc v out gnd + - thermal shutdown bandgap reference current limit and saturation sense ea adjustable voltage version v in inh va v out gnd + - thermal shutdown bandgap reference current limit and saturation sense ea free datasheet http://
ucv676/a linear integrated circuit unisonic technologies co., ltd 3 of 9 www.unisonic.com.tw qw - r102 - 051. b ? absolute maximum rating (note 1 ) parameter symbol rating s unit input voltage v i n 45 v input peak transient voltage v i n 45 v inhibit inh voltage v inh 45 v voltage adjust input va v va 10 v output voltage v out 40 v ground curre nt i q 100 ma input voltage operating range (note 2 ) v i v out +0.5v or 4.5v~40 v junction temperature t j - 40~150 c storage temperature t stg - 50~150 c note s: 1. absolute maximum ratings are those values beyond which the device could be permanently damag ed. absolute maximum ratings are stress ratings only and functional device operation is not implied. 2 . during the voltage range which exceeds the maximum tested voltage of v i n , operation is assured, but not specified. wider limits may apply. thermal dissipation must be observed closely. ? electrical characteristics (v i n = 13.5 v, t j =25 c , unless otherwise noted.) f or ucv676/a - 1.8 parameter symbol test conditions ucv676 UCV676A unit min typ max min typ max output output voltage v out 5.0ma< i out <400ma , 4.5v< v i n <28 v 1.728 1.8 1.872 - - - v 5.0ma< i out <200ma, 4.5v< v i n < 40v 1.728 1.8 1.872 - - - v output current limitation i out v out = 90% v out( typ ) 400 700 1100 400 700 1100 ma quiescent current (sleep mode) i q i q = i i -i out , v inh =0 v - - 10 - - 10 a quiescent current i q i q = i i - i out i out =1.0 ma - 130 220 - 130 200 a i out =250 ma - 10 15 - 10 15 ma i out =400 ma - 25 35 - 25 35 ma dropout voltage v dr v i n = 4.5 v, i out =250 ma, v dr = v i n - v out - - 2.772 - - - v load regulation v out i out = 5.0 ma ~ 400 ma - 10 35 - 3.0 20 mv line regulation v out v i n =12 v ~ 32 v, i out =5.0 ma - 2.5 25 - 4.0 15 mv power supply ripple rejection psrr f r =100 hz, v r = 0.5 v pp - 60 - - 70 - db temperature coefficient of v o ut v o ut /t - 0.5 - - 0.5 - mv/k inhibit inhibit voltage, output high v inh v out v out( min ) - 2.8 3.5 - 2.3 2.8 v in hibit voltage, output low (off) v inh v out 0.1v 0.5 1.7 - 1.8 2.2 - v input current i inh v inh =5.0v 5.0 10 20 5.0 10 20 a thermal shutdown thermal shutdown temperature (note 2 ) t sd i out =5.0 ma 150 - 210 150 - 210 c free datasheet http://
ucv676/a linear integrated circuit unisonic technologies co., ltd 4 of 9 www.unisonic.com.tw qw - r102 - 051. b ? electrical characteristics (cont.) for ucv676/a - 2.5 parameter symbol test conditions ucv676 UCV676A unit min typ max min typ max output output voltage v out 5.0ma ucv676/a linear integrated circuit unisonic technologies co., ltd 5 of 9 www.unisonic.com.tw qw - r102 - 051. b ? electrical characteristics (cont.) for ucv676/a - 3.3 parameter symbol test conditions ucv676 UCV676A unit min typ max min typ max output output voltage v out 5.0ma ucv676/a linear integrated circuit unisonic technologies co., ltd 6 of 9 www.unisonic.com.tw qw - r102 - 051. b ? electrical characteristics (cont.) for ucv676/a - 5.0 parameter symbol test conditions ucv676 UCV676A unit min typ max min typ max output output voltage v out 5.0ma< i out <400 ma, 6 .0v< v i n <28 v 4.8 5.0 5.2 4.9 5.0 5.1 v 5.0m a< i out < 200 ma, 6 .0v< v i n < 40 v 4.8 5.0 5.2 4.9 5.0 5.1 v output current limitation i out v out = 90% v out ( typ ) 400 700 1100 400 700 1100 ma quiescent current (sleep mode) i q i q = i i -i out , v inh =0 v - - 10 - - 10 a quiescent current i q i q = i i - i out i out =1.0 ma - 130 220 - 130 200 a i out =250 ma - 10 15 - 10 15 ma i out =400 ma - 25 35 - 25 35 ma dropout voltage v dr v i n = 5.0 v, i out =250 ma, v dr = v i n - v out - 250 500 - - - mv dropout voltage (note 1 ) v dr i q =250 ma - - 250 500 mv load regulation v out i out = 5.0 ma ~ 400 ma - 10 35 - 3.0 20 mv line regulation v out v i n =12 v ~ 32 v, i out =5.0 ma - 2.5 25 - 4.0 15 mv power supply ripple rejection psrr f r =100 hz, v r = 0.5 v pp - 60 - - 70 - db temperature coefficient of v o ut v o ut /t - 0.5 - - 0.5 - mv/k inhibit inhibit voltage, output high v inh v out v out( min ) - 2.8 3.5 - 2.3 2.8 v inhibit voltage, output low (off) v inh v out 0.1v 0.5 1.7 - 1.8 2.2 - v input current i inh v inh =5.0v 5.0 10 20 5.0 10 20 a thermal shutdo wn thermal shutdown temperature (note 2 ) t sd i out =5.0ma 150 - 210 150 - 210 c free datasheet http://
ucv676/a linear integrated circuit unisonic technologies co., ltd 7 of 9 www.unisonic.com.tw qw - r102 - 051. b ? electrical characteristics (cont.) for ucv676/a - adj parameter symbol test conditions ucv676 UCV676A unit min typ max min typ max output output voltage, adjustable ver sion av out 5.0ma< i out <400 ma, v out +1< v i n <40 v, v i n > 4.5 v -4% +4% -2% +2% v output current limitation i out v out = 90% v out ( typ ) (v out( typ ) =2.5 v) 400 700 1100 400 700 1100 ma quiescent current (sleep mode) i q i q = i i -i out , v inh =0 v - - 10 - - 10 a quiescent current i q i q = i i - i out i out =1.0 ma - 130 220 - 130 200 a i out =250 ma - 10 15 - 10 15 ma i out =400 ma - 25 35 - 25 35 ma dropout voltage v dr v i n > 4.5 v, i out =250 ma, v dr = v i n - v out - 250 500 - 250 500 mv load regulation v out i out = 5.0 ma ~ 4 00 ma - 10 35 - 3.0 20 mv line regulation v out v i n =12 v~ 32 v, i out =5.0 ma - 2.5 25 - 4.0 15 mv power supply ripple rejection psrr f r =100 hz, v r = 0.5 v pp - 60 - - 70 - db temperature coefficient of v o ut v o ut /t - 0.5 - - 0.5 - mv/k inhibit inhibit vo ltage, output high v inh v out v out( min ) - 2.8 3.5 - 2.3 2.8 v inhibit voltage, output low (off) v inh v out 0.1v 0.5 1.7 - 1.8 2.2 - v input current i inh v inh =5.0v 5.0 10 20 5.0 10 20 a thermal shutdown thermal shutdown temperature (note 2 ) t sd i out = 5.0ma 150 - 210 150 - 210 c notes: 1. measured when the output voltage v out has dropped 100 mv from t he nominal valued obtained at v= 13.5v. 2. guaranteed by design, not tested in production. free datasheet http://
ucv676/a linear integrated circuit unisonic technologies co., ltd 8 of 9 www.unisonic.com.tw qw - r102 - 051. b typical application circuit fixed voltage version v in inh nc v out 1 2 5 4 3 gnd utc ucv676 5.5~45v input i i c i1 1.0f i inh c i2 100nf r l output i out c out 22f adjustable voltage version v in inh va 1 2 5 4 3 gnd utc ucv676 UCV676A input i i c i1 1.0f i inh c i2 100nf r l output i out c out 22f v out =[ ( r1+r2 )v ref ] / r2 c b * r 1 r 2 v out * required if usage of low esr output capacitor cq is demand. free datasheet http://
ucv676/a linear integrated circuit unisonic technologies co., ltd 9 of 9 www.unisonic.com.tw qw - r102 - 051. b ? typical characteristics 10 0 input high voltage holding test current consumption , i leak (ma) input voltage, v in (v) 40 50 70 20 60 0 5 10 15 20 25 time (10ms/div) 0 50 100 0 psrr test curve ch2: 0.01vdiv ch1: v in ch2: v out v in =13.5v, i out = 5ma, vrip =0.5vrms, f=100hz 0 ch1: 0.5v/div 30 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. free datasheet http://
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