ver 2.2 mar 19, 2008 tel: 886-3-5788833 http://www.gmt.com.tw 1 g525 global mixed-mode technology inc. usb high-side power switch advance information features ? compliant to usb standard ? typical 130m , low mosfet on resistance, at 5.0v ? 500ma minimum continuous load current ? 3.0v to 5.5v operating range ? 100 a typical on-state supply current ? 25 a typical standby supply current ? output can be forced higher than input when operating in off state. ? 1.2a maximum current limit ? thermal shutdown protection ? 2.4v typical undervoltage lockout (uvlo) ? open-drain fault flag pin ? slow turn-on (soft-start) and fast turnoff ? logic level enable pin, available with active- high or active-low version applications ? high-side power protection switch ? usb power management ? usb host and self-powered hubs ? usb bus-powered hubs ? hot plug-in power supplies ? battery-charger circuits general description the g525 is an integrated high-side power switch op- timized for self-powered and bus-powered universal serial bus (usb) applications. the g525 satisfies the usb standards. the switch ' s low on-resistance meets usb voltage drop require- ments. when the output load exceeds current-limit threshold, g525 switches into constant mode and limit the output current to a safe level, which is typically 900ma, well below the ul 25va safety requirement. an open-drain flag output is also available to indicate fault conditions to the local usb controller. soft start elimi- nates the momentary voltage drop on the upstream port that may occur when the switch is enabled in bus-powered applications. besides, a thermal shutdown circuit is included to pre- vent catastrophic switch failure caused by increasing power dissipation when continuous heavy loads or short circuit occurs. a undervoltage lockout (uvlo) circuit ensures that the device remains off unless there is a valid input voltage present, and an enable input that is compatible with both 3.3v and 5v logic. ordering information order number marking enable temp. range package (pb free) g525-1 g525-1 active high -40 c to +85 c sop-8 g525-2 g525-2 active low -40 c to +85 c sop-8 g525-1p81u g525-1 active high -40 c to +85 c msop-8 g525-2p81u g525-2 active low -40 c to +85 c msop-8 note: p1: sop-8 p8: msop-8 1: bonding code u: tape & reel pin configuration function block g525 gate control (en) 1 (flg) 2 6,8 (out) 7 (in) 3 (gnd) en flg gnd nc 8 6 5 1 2 3 4 sop-8/msop-8 g525 7 out in nc out g525 gate control (en) 1 (flg) 2 6,8 (out) 7 (in) 3 (gnd) en flg gnd nc 8 6 5 1 2 3 4 sop-8/msop-8 g525 7 out in nc out
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