unisonic technologies co., ltd us206 preliminary cmos ic www.unisonic.com.tw 1 of 4 copyright ? 2016 unisonic technologies co., ltd qw-r129-021.a power distribution switch ? description the utc us206 is a power distribution switch. it particularly designed for self-powered and bus-powered universal serial bus (usb) applications. the r ds (on) of the mosfet switch is as low as 85m ? . oc is open-drain output report over-curr ent or over-temperature event which has deglitch typical 9ms timeout period typically 9ms. the utc us206 incorporates protection circuits including current limiting circuit with foldback function, thermal shutdown circuit designed to prevent catastrophic switch failure due to increasing power dissipation when continuous heavy loads or short circuit occurs. besides, a built-in charge pump is used to drive the n-channel mosfet that is free of parasitic body diode to eliminate any reversed current flow across the switch when it is powered off. the utc us206 is applied in high-side power protection switch, usb power management, usb host and self-powered bubs, usb bus-powered hubs, hot plug-in power supplies, battery-charger circuits. ? features * operating on the range of 3.0v to 5.5v * high-side mosfet with 85m ? r ds(on) * quiescent supply current: 65 a * available with 4 versions of current limits with foldback * rise time: 400 s (typ.) * uvlo (under voltage lockout) * output shutdown pull-low resister * shutdown supply current: 1 a (max.) * logic level enable pin, available with active-high or active-low version * reverse current is not gene rated when in power off state * deglitched open-drain ov er-current flag output ( oc ) sot-25 1 3 5 2 4 ? ordering information ordering number package packing us206xg-xx-af5-r sot-25 tape reel us206xg-xx-af5-r (1)packing type (2)package type (1) r: tape reel (2) af5: sot-25 (3) 10: 1.4a, 15: 2.1a, 20: 2.8a, 25: 3.5a (3)current limit threshold (4)green package (4) g: halogen free and lead free (5)logic level enable pin (5) h: active high, l: active low
us206 preliminary cmos ic unisonic technologies co., ltd 2 of 4 www.unisonic.com.tw qw-r129-021.a ? marking ? pin configuration gnd oc out en / en in 1 23 4 5 ? pin description pin no. pin name description 1 out switch output: output mosfet source. typically connect to switched side of load. 2 gnd ground 3 in input supply: output mosfet drain, which also supplies ic's internal circuitry. connect to positive supply. 4 ) en ( en enable: logic level enable input. make sure en pin never floating. 5 oc overcurrent open-drain oc output ? block diagram
us206 preliminary cmos ic unisonic technologies co., ltd 3 of 4 www.unisonic.com.tw qw-r129-021.a ? absolute maximum ratings parameter symbol ratings unit supply voltage v in 6 v output voltage v out 6 v output current i out internally limited power dissipation (t a = 25c) p d 0.4 w enable input v en -0.3 ~ 6 v storage temperature t s -65 ~ +150 c reflow temperature (soldering, 10sec) 260 c note: absolute maximum ratings are those values beyond which the device could be permanently damaged. absolute maximum ratings are stress ratings only and functional device operation is not implied. ? operating ratings parameter symbol ratings unit supply voltage v in +3 ~ +5.5 v operating temperature t a -40 ~ +85 c ? thermal data parameter symbol ratings unit j unction to ambient ja 250 c/w ? electrical characteristics (v in =5v, c in =1f, c out =1f, r l =10 ? t a =25c, unless otherwise noted.) parameter symbol test conditions min typ max unit input voltage rage v in 5.5 v i out =2a us206-25 i out =1.5a us206-20 i out =1a us206-15 output mos r ds(on) r ds(on) i out =0.5a us206-10 85 95 m ? supply current i on 65 a output turn-on rising time t on r l =10 ? , 90% settling 400 s us206-25 2.0 2.5 3.5 us206-20 1.5 2.0 2.8 us206-15 1.1 1.5 2.1 current limit threshold i oc v out =4v us206-10 0.7 1.0 1.4 a us206-25 0.2 1.6 2.3 us206-20 0.2 1.3 1.9 us206-15 0.2 1.0 1.4 short-circuit current i sc v out =0v us206-10 0.2 0.67 1.0 a en input threshold v en 1.4 1.6 1.8 v shutdown supply current i off 0.1 1 a output leakage current i leak en=?0?, v out =0v 0.5 1 a v in under voltage lockout v uvlo 2.0 2.5 3.0 v v in under voltage hysteresis v uvlo 200 mv thermal limit t ot 135 c thermal limit hysteresis t ot 20 c oc deglitch t oc utc us206, oc assertion or deassertion 4 9 15 ms oc output low voltage v oc utc us206, i oc = 5ma 0.4 v oc off-state current i oc-off utc us206, v oc = 5v 1 a
us206 preliminary cmos ic unisonic technologies co., ltd 4 of 4 www.unisonic.com.tw qw-r129-021.a ? typical application circuit 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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