unisonic technologies co., ltd ucm102 preliminary cmos ic www.unisonic.com.tw 1 of 4 copyright ? 2013 unisonic technologies co., ltd qw-r502-934.a high-side current monitor ? description the utc ucm102 is a high-side current sense monitor. it uses utc?s advanced technology to provide customers with a minimum operating current, high accuracy and high side voltage, etc. the utc ucm102 is suitable for portable battery equipment. ? features * low operating current * high side voltage (2.5~20v) * high accuracy (typ=1%) ? ordering information ordering number package packing lead free halogen free ucm102l-ae2-r UCM102G-AE2-R sot-23-3 tape reel ucm102l-ae2-r (1)packing type (2)package type (1) r: tape reel (2) ae2: sot-23-3 (3) l: lead free, g: halogen free (3)lead free ? marking
ucm102 preliminary cmos ic unisonic technologies co., ltd 2 of 4 www.unisonic.com.tw qw-r502-934.a ? pin configuration ? pin description pin no. pin name description 1 v sense- connection to load/battery 2 v sense+ supply voltage 3 i out output current, proportional to v in -v load ? block diagram
ucm102 preliminary cmos ic unisonic technologies co., ltd 3 of 4 www.unisonic.com.tw qw-r502-934.a ? absolute maximum rating parameter symbol ratings unit voltage on any pin (relative to i out ) -0.6~20 v continuous output current i out 25 ma continuous sense voltage (note 2) v sense -0.5~+5 v power dissipation (t a =25c) derate to zero at 125c p d 450 mw operating temperature t a -40~85 c storage temperature t stg -55~125 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. ? electrical characteristics (test conditions t a =25c, v in =5v, r out =100 ? .) parameter symbol test conditions min typ max unit v cc range v in 2.5 20 v output current i out (note 1) v sense =0v 1 4 15 a v sense =10mv 90 104 120 a v sense =100mv 0.975 1.002 1.025 ma v sense =200mv 1.95 2.0 2.05 ma v sense =1v 9.6 9.98 10.2 ma sense voltage v sense (note 2) 0 2500 mv v sense - input current i sense - 100 na accuracy acc r sense =0.1 ? , v sense =200mv -2.5 2.5 % transconductance, i out /v sense gm 10000 a/v bandwidth bw v sense(dc) =10mv, pin=-40dbm (note 3) 300 khz v sense(dc) =100mv, pin= -20dbm (note 3) 2 mhz notes: 1. includes input offset voltage contribution 2. v sense is defined as the differential voltage between v sense+ and v sense- . v sense =v sense+ - v sense- = v in - v load = i load x r sense 3. -20dbm=63mvp-p into 50 ?
ucm102 preliminary cmos ic unisonic technologies co., ltd 4 of 4 www.unisonic.com.tw qw-r502-934.a ? typical application circuit v sense +v sense - utc ucm102 i out v in r sense to load 2 3 1 v out r out r load v out = v sense 100r out 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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