ver: 0.6 jun 13, 2013 tel: 886-3-5788833 http://www.gmt.com.tw 1 G524a/b/c/d global mixed-mode technology power distribution switch features ? 70m high-side mosfet (G524a,G524b,G524c,G524d) ? available with 4 versions of current limits with foldback ? operating range:2.7v to 5.5v ? 1ms typical rise time ? fast overcurrent response -1.5s (typical) ? under voltage lockout ? 130 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 when power off ? deglitched open-drain over-current flag output ( oc ) ? available with or without output shutdown pull-low resister ? output reverse-voltage protection ? sot-23-5, tsot-23-6, msop-8 and msop-8 (fd) packages ? ul certification_#e232223 ? cb test certification by iec 60950-1:2005 (2nd edition); am 1:2009 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 general description the G524 is an integrated power switch for self-powered and bus-powered universal serial bus (usb) applications. G524a, G524b, G524c, G524d are 70m r ds(on) . several protection features include current limiting and thermal shutdown to prevent catastrophic switch fail- ure caused by increasing power dissipation when con- tinuous heavy loads or short circuit occurs. 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 pow- ered off. when the output voltage is higher than input voltage, the power switch is turned off by internal out- put reverse-voltage comparator. oc is an open-drain output report over-current or over-temperature event and has typical 9ms deglitch timeout period. in addition, oc also reports output reverse-voltage condition with typical 5ms deglitch timeout period. pin configuration typical application circuit 0.1 f 22 f load oc en(en) 1 f power supply 2.7v to 5.5v out in on off * * : 1 f of input capacitor is enough in most application cases. if the pcb trace of power rail to in is long, larger input capacitor is necessary. G524 8 6 5 1 2 3 4 gnd msop-8 G524 7 out en (en) out oc in in out * note: recommend connecting the thermal pad to the gnd for excellent power dissipation. * pin#6 should be considered as out when circuit design and pcb layout, but it is nc pin actually. gnd tsot-23-6 6 1 2 out 4 3 in G524 5out oc en (en) 8 6 5 1 2 3 4 gnd msop-8 (fd) 7 out en (en) out oc in in out * thermal pad sot-23-5 5 1 2 4 3 oc out in gnd G524 G524 en (en) 0.1 f 22 f load oc en(en) 1 f power supply 2.7v to 5.5v out in on off * * : 1 f of input capacitor is enough in most application cases. if the pcb trace of power rail to in is long, larger input capacitor is necessary. G524 8 6 5 1 2 3 4 gnd msop-8 G524 7 out en (en) out oc in in out * note: recommend connecting the thermal pad to the gnd for excellent power dissipation. * pin#6 should be considered as out when circuit design and pcb layout, but it is nc pin actually. gnd tsot-23-6 6 1 2 out 4 3 in G524 5out oc en (en) 8 6 5 1 2 3 4 gnd msop-8 (fd) 7 out en (en) out oc in in out * thermal pad sot-23-5 5 1 2 4 3 oc out in gnd G524 G524 en (en)
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