unisonic technologies co., ltd us212 preliminary cmos ic www.unisonic.com.tw 1 of 4 copyright ? 2016 unisonic technologies co., lt qw-r129-018.a 0.5a single channel current-limited power switch ? description the utc us212 is integrated high-side power switches optimized for universal serial bus (usb) and other hot-swap applications. the utc us212 complies with usb 2.0. both polarities of enable input are available. the utc us212 offers current and thermal limiting and short circuit protection, as well as controlled rise time and under-voltage lockout functionality. the open-drain flag output with a pull-up resistance to in have a blanking time, 7ms typically, for preventing false over-current reporting, and does not require any external components. the utc us212 is generally used in lcd tvs & monitors, game machines, set-top-boxes, gps systems, smartphones, laptops, desktops, servers, prin ters, docking stations, hubs and so on. ? features * single usb port power switches * over-current and thermal protection * 0.8a accurate current limiting * reverse current blocking * 110 m ? on-resistance * input voltage range: 2.7v~5.5v * 0.6ms typical rise time * very low shutdown current: 1a (max) * fault report (flg) with 7ms deglitch capability * active high or active low enable * ambient temperature range -40c~+85c sop-8 ? ordering information ordering number lead free halogen free package packing us212xl-xx-s08-r us212xg-xx-s08-r sop-8 tape reel
us212 preliminary cmos ic unisonic technologies co., ltd 2 of 4 www.unisonic.com.tw qw-r129-018.a ? marking ? pin configuration ? pin description pin no. pin name description 1 gnd ground 2, 3 in voltage input pin (all in pi ns must be tied together externally). 4 en enable input. active low or active high. 5 flg over-current and over-temperature fault report. open-drain flag is active low when triggered 6, 7 out voltage output pin (all out pi ns must be tied together externally). 8 nc no internal connection; recommend tie to out pins ? block diagram in en out flg uvlo driver thermal sense current limit current sense deglitch gnd
us212 preliminary cmos ic unisonic technologies co., ltd 3 of 4 www.unisonic.com.tw qw-r129-018.a ? absolute maximum ratings t a =+25c, unless otherwise specified.) parameter symbol ratings unit input voltage v in 6.5 v output voltage v out v in +0.3 v enable voltage v en , v flg 6.5 v maximum continuous load current i load internal limited a maximum junction temperature t j(max) 150 c storage temperature range (note 1) t st -65~+150 c notes: 1. absolute maximum ratings are those values beyond which the device could be permanently damaged. absolute maximum ratings are stress ratings only and functional device oper ation is not implied. 2. ul recognized rating from -30c to +70c (diodes qualified t st from -65c to +150c). ? recommended operating conditions (t a =+25c, unless otherwise specified.) parameter symbol ratings unit input voltage v in 2.7~5.5 v output current i out 0~500 ma operating ambient temperature t a -40~+85 c en input logic low voltage v il 0~0.8 v en input logic high voltage v ih 2~v in v ? thermal characteristics parameter symbol ratings unit junction to ambient ja 110 c/w note: device mounted on fr-4, 2oz copper, with minimum recommended pad layout. ? electrical characteristics (t a =+25c, v in =+5.0v, unless otherwise specified) parameter symbol test conditions min typ max unit input uvlo v uvlo r load =1k ? 1.6 1.9 2.5 v input shutdown current i shdn disabled, i out =0 0.5 1 a input quiescent current i q enabled, i out =0 45 70 a input leakage current i leak disabled, out grounded 1 a reverse leakage current i rev disabled, v in =0v, v out =5v, i rev at v in 1 a v in =5v, i out = 0.5a 110 140 switch on-resistance (t a =25c) r ds(on) v in =3.3v, i out =0.5a 125 160 m ? short-circuit current limit i short enabled into short circuit, c l =22f 0.6 a over-load current limit i limit v in =5v, v out =4.8v, c l =22f 0.6 0.8 1.0 a current limiting trigger threshold i trig output current slew rate (<100a/s), c l =22f 1.0 a en input leakage i sink v en =5v 1 a output turn-on delay time t d(on) c l =1f, r load =10 ? 0.05 ms output turn-on rise time t r c l =1f, r load =10 ? 0.6 1.5 ms output turn-off delay time t d(off) c l =1f, r load =10 ? 0.01 ms output turn-off fall time t f c l =1f, r load =10 ? 0.05 0.1 ms flg output fet on-resistance r flg i flg =10ma 20 50 ? flg blanking time t blank c in =10f, c l =22f 4 7 15 ms thermal shutdown threshold t shdn enabled, r load =1k ? 140 c thermal shutdown hysteresis t hys 25 c ? typical application circuit
us212 preliminary cmos ic unisonic technologies co., ltd 4 of 4 www.unisonic.com.tw qw-r129-018.a 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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