unisonic technologies co., ltd urxx20 linear integrated circuit www.unisonic.com.tw 1 of 6 copyright ? 2013 unisonic technologies co., ltd qw-r102-052.a 2a output type lo w power-loss voltage regulator ? features * low power-loss(dropout voltage: 0.5v(max) at i out =2.0a) * 2.0a output type * output voltage precision: 3.0% * built-in on/off control function and over-current protection circuit. * thermal shutdown protection. to-252 1 ? ordering information ordering number package pin assignment packing lead free halogen free 1 2 3 urxx20l-tn3-d-t urxx20g-tn3-d-t to-252 i g o tube urxx20l-tn3-d-r urxx20g-tn3-d-r to-252 i g o tape reel note: pin assignment: i: input g: gnd o: output
urxx20 linear integrated circuit unisonic technologies co., ltd 2 of 6 www.unisonic.com.tw qw-r102-052.a ? marking information package voltage code marking to-252 1 2 : 1 2 v ? block diagram
urxx20 linear integrated circuit unisonic technologies co., ltd 3 of 6 www.unisonic.com.tw qw-r102-052.a absolute maximum ratings (t a =25c, unless otherwise specified.) parameter symbol ratings unit input voltage(note1) v in 20 v output current i out 2.0 a power dissipation p d 0.7 w junction temperature (note2) t j 150 c operating temperature t opr -40 ~ +85 c storage temperature t stg -40 ~ +150 c note 1: all are open except gnd and applicable terminals. note 2: overheat protection may operate at 125 Q t j Q 150 c ? electrical characteristics (refer to the test circuits, unless otherwise specified, t a =25c) for UR1220(12v) parameter symbol test conditions min typ max unit output voltage v out v in =14v, i out =1a 11.64 12.0 12.36 v line regulation v out v in =13~19v, i out =5ma 0.5 2.5 % load regulation v out v in =14v, i out =5ma~2.0a 0.1 2.0 % temperature coefficient of output voltage t c v o t j =0~125c, i out =5ma 0.02 %/c ripple rejection rr refer to fig.2 45 55 db dropout voltage v d (note 1), i out =2a 0.5 v quiescent current i q i out =0a, v in =14v 10 ma note: input voltage shall be the value when output volt age is 95% in comparison with the initial value.
urxx20 linear integrated circuit unisonic technologies co., ltd 4 of 6 www.unisonic.com.tw qw-r102-052.a ? test circuits fig.1 v + + v in 0.33 f 47 f i o r l ei eo f=120hz ei=0.5vrms io=0.5a rr=20log (ei/eo) v in =12v(ur1020) 1 2 3 ? typical application
urxx20 linear integrated circuit unisonic technologies co., ltd 5 of 6 www.unisonic.com.tw qw-r102-052.a ? typical characteristics v in =18v io=0.5a -25 100 50 25 0 75 125 -150 -100 -50 0 50 100 150 250 fig.3 output voltage deviation vs .junction temperature (UR1220) output voltage deviation, vo (mv) 200 -200 output voltage, vo (v) 0 25 15 10 520 0 5 10 15 20 i n p u t v o l t a g e , v i n ( v ) fig.4 output voltage vs .input voltage (UR1220) r l = ? r l =12 r l =6 j u n c t i o n t e m p e r a t u r e , t j ( c ) i n p u t v o l t a g e , v i n ( v ) fig.6 dropout voltage vs .junction temperature (UR1220) d r o p o u t v o l t a g e , v i - o ( v ) j u n c t i o n t e m p e r a t u r e , t j ( c ) 20 40 60 80 fig.5 circuit operating current vs .input voltage (UR1220) circuit operating current, i bias (ma) 0 25 15 10 520 0 -25 50 0 0.1 0.2 0.3 0.4 125 100 075 25 0.5 r l = ? r l =12 ? r l =6 ?
urxx20 linear integrated circuit unisonic technologies co., ltd 6 of 6 www.unisonic.com.tw qw-r102-052.a ? typical characteristics(cont.) 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.
|
