G556 Global Mixed-mode Technology Inc. Dual Power Distribution Switch Features General Description The G556 is an integrated dual channel 100mΩ power switch for self-powered and bus-powered Universal Serial Bus (USB) applications. 100mΩ High-Side MOSFET Available with 4 Versions of Current Limits with Foldback Operating Range:2.7V to 5.5V 400µS Typical Rise Time Under voltage Lockout 65µA Quiescent Supply Current 1µA 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 ) SOP-8 Package OC is open-drain output report over-current or over-temperature event and has typical 9ms deglitch timeout period. Several Protection features include current limiting with foldback, and thermal shutdown to prevent catastrophic switch failure caused by increasing power dissipation 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. 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 Ordering Information ORDER NUMBER MARKING ENABLE Current Limit TEMP. RANGE PACKAGE (Green) G556A1P1U G556A2P1U G556B1P1U G556B2P1U G556A1 G556A2 G556B1 G556B2 Active High Active Low Active High Active Low 2A 2A 1.5A 1.5A -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C SOP-8 SOP-8 SOP-8 SOP-8 G556C1P1U G556C2P1U G556C1 G556C2 Active High Active Low 1A 1A -40°C to +85°C -40°C to +85°C SOP-8 SOP-8 G556D1P1U G556D2P1U G556D1 G556D2 Active High Active Low 0.75A 0.75A -40°C to +85°C -40°C to +85°C SOP-8 SOP-8 Pin Configuration Typical Application Circuit G556 EN1(EN1) 1 8 OUT1 OC1 2 7 IN OC2 3 6 GND EN2 (EN2) 4 5 OUT2 Power Supply 2.7V to 5.5V 7 1µF 2 1 3 4 IN OUT1 8 Load 0.1µF 22µF OC1 EN1 (EN1) OC2 EN2 (EN2) OUT2 5 Load 0.1µF 22µF SOP-8 TEL: 886-3-5788833 http://www.gmt.com.tw Ver 1.3 Sep 29, 2010 1