ver 1.6 apr 12, 2011 tel: 886-3-5788833 http://www.gmt.com.tw 1 G5258 global mixed-mode technology inc. dual power distribution switch features ? 87m high-side mosfet ? available with 4 versions of current limits with foldback ? operating range:2.7v to 5.5v ? 400 s typical rise time ? under voltage lockout ? 65 a quiescent supply current ? 1 a maximum shutdown supply current ? logic level enable pin, available with active-high or active-low version ? no reverse current to vin when power off ? vout off discharge ? deglitched open-drain over-current flag output ( oc ) ? sop-8 package and tdfn3x3-8 package ? ul approved_#e232223 ? nemko iec 60950-1 cb/cca_scheme certifica- tion report #67291 ? csa approved #230321 general description the G5258 is an integrated dual channel 87m power switch for self-powered and bus-powered universal serial bus (usb) applications. several protection features include current limiting with foldback, and thermal shutdown to prevent catas- trophic switch failure caused by increasing power dis- sipation when continuous heavy loads or short circuit occurs. and 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. oc is open-drain output report over-current or over-temperature event and has typical 9ms deglitch timeout period. applications ? 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 pin configuration typical application circuit r ul recognized component r ul recognized component 8 6 5 1 2 3 4 gnd oc1 en1(en1) sop-8 G5258 7 out1 in out2 en2 (en2) 0.1 f 22 f load oc1 en1 (en1) oc2 en2 (en2) 0.1 f 22 f load 1 f power supply 2.7v to 5.5v out1 out2 oc2 in tdfn3x3-8 1 2 3 4 8 7 6 5 thermal pad G5258 note: recommend connecting the thermal pad to the gnd for excellent power dissipation. oc1 out1 out2 oc2 gnd en1(en1) in en2 (en2) 8 6 5 1 2 3 4 gnd oc1 en1(en1) sop-8 G5258 7 out1 in out2 en2 (en2) 0.1 f 22 f load oc1 en1 (en1) oc2 en2 (en2) 0.1 f 22 f load 1 f power supply 2.7v to 5.5v out1 out2 oc2 in tdfn3x3-8 1 2 3 4 8 7 6 5 thermal pad G5258 note: recommend connecting the thermal pad to the gnd for excellent power dissipation. oc1 out1 out2 oc2 gnd en1(en1) in en2 (en2)
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