unisonic technologies co., ltd um606 linear integrated circuit www.unisonic.com.tw 1 of 7 copyright ? 2011 unisonic technologies co., ltd qw-r105-034.d constant voltage and constant current controller ? description the utc um606 , for a constant voltage/ constant current mode smps (switch mode power supplies) application which is a highly integrated solution, it contains one 1.21v voltage reference with 1% accuracy, one current sensing circuit and two operational amplifiers. the utc um606 is an ideal voltage controller for use in adapters and battery chargers because the voltage reference it?s combining with one operational amplifier. and the utc um606 is an ideal current limiter for output low side current sensing because the other low voltage reference is combin ing with the other operational amplifier. ? features *constant voltage and constant current control *precision internal voltage reference *few external components *easy compensation sot-26 4 5 3 2 1 6 ? ordering information ordering number lead free halogen free package packing UM606XL-AG6-R um606xg-ag6-r sot-26 tape reel
um606 linear integrated circuit unisonic technologies co., ltd 2 of 7 www.unisonic.com.tw qw-r105-034.d ? marking package code marking sot-26 (for um606) - ume6 123 4 5 6 g: halogen free l: lead free sot-26 (for um606x) d um6 1 2 3 4 5 6 reference voltage g: halogen free l: lead free ? pin configuration ? pin description pin no. pin name function 1 v ctrl input pin of the voltage control loop 2 gnd ground 3 v out output pin. sinking current only 4 i ctrl input pin of the current control loop 5 v sense input pin of the current control loop 6 v cc power supply
um606 linear integrated circuit unisonic technologies co., ltd 3 of 7 www.unisonic.com.tw qw-r105-034.d ? block diagram
um606 linear integrated circuit unisonic technologies co., ltd 4 of 7 www.unisonic.com.tw qw-r105-034.d ? absolute maximum ratings (t a =25c, unless otherwise specified.) parameter symbol ratings unit dc supply voltage v cc 20 v input voltage v in -0.3 ~ v cc v junction temperature t j +150 c operating temperature t opr -40~+105 c storage temperature t stg -65 ~ +150 c 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 ja 250 c/w junction to case jc 92 c/w ? recommended operating conditions parameter symbol ratings unit supply voltage v cc 2.5 ~ 18 v operating temperature t a -20 ~ +70 c ? electrical characteristics (v cc =5v, t a =25c, unless otherwise specified.) parameter symbol test conditions min typ max unit um606 1.198 1.21 1.222 reference voltage v ref um606d 1.186 1.21 1.234 v um606 196 200 204 current control loop reference v sense i out =2.5ma um606d 66.5 70 73.5 mv um606 200 low output voltage v ol @ 10ma sinking current um606d 100 mv um606 0.6 1.2 total supply current i cc v cc =5v um606d 0.5 1.0 ma input bias current i ib 50 na um606 25 current out of pin i ctrl i ibi @ -200mv um606d 18 a output short circuit current. i os output to v cc . sink current only 27 50 ma transconduction gain (v ctrl ) gmv sink current only 1 3.5 ma/mv transconduction gain (i ctrl ). gmi 1.5 7 ma/mv
um606 linear integrated circuit unisonic technologies co., ltd 5 of 7 www.unisonic.com.tw qw-r105-034.d ? typical application gnd v cc v out v ctrl i ctrl v sense um606 gnd load v out to primary r 1 r 2 r 3 470k r 4 c 1 2.2nf c 2 22pf c 3 2.2nf r 5 22k r 6 500 r 7 6 3 1 2 5 4
um606 linear integrated circuit unisonic technologies co., ltd 6 of 7 www.unisonic.com.tw qw-r105-034.d ? typical performance characteristics
um606 linear integrated circuit unisonic technologies co., ltd 7 of 7 www.unisonic.com.tw qw-r105-034.d ? typical performance characteristics(cont.) output short circuit current vs. ambient temperature ambient temperature, t a (c) v cc =2.5v, v cc =5v, v cc =12.5v 110 -40 -10 140 20 80 50 30 110 100 0 20 90 80 10 70 40 60 50 120 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 writ ten 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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