G548S Global Mixed-mode Technology Power Distribution Switch Features General Description 70mΩ High-Side MOSFET Operating Range:2.7V to 5.5V 1mS Typical Rise Time Fast Overcurrent Response 1.5µs (TYP.) Under voltage Lockout 130µA Quiescent Supply Current 1µA Maximum Shutdown Supply Current No Reverse Current when Power Off Deglitched Open-Drain Over-Current Flag The G548S is an integrated power switch for self-powered and bus-powered Universal Serial Bus (USB) applications. Several Protection features include current limiting and thermal shutdown to prevent catastrophic switch failure caused by increasing power dissipation when continuous 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 powered off. When the output voltage is higher than input voltage, the power switch is turned off by internal output reverse-voltage comparator. Output ( OC ) Output Reverse-Voltage Protection SOP-8 Packages 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 OC is 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. Ordering Information ORDER NUMBER MARKING ENABLE Current Limit Output MOS RDS(ON) TEMP. RANGE PACKAGE (Green) G548S1 Active High 1.5A 70mΩ -40oC to +85oC SOP-8 G548S1P11U Note:P1: SOP-8 1: Bonding Code U: Tape & Reel Pin Configuration Typical Application Circuit G548S G548S GND 1 8 OUT IN 2 7 OUT IN 3 6 OUT* EN 4 5 OC Power Supply 2.7V to 5.5V 1µF* OUT Load 0.1µF 22µF OC ON EN OFF SOP-8 *Pin#6 should be considered as OUT when circuit design and PCB layout, but it is NC pin actually. IN *: 1µF 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. TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 0.1 Mar 27, 2013 1