US202

UNISONIC TECHNOLOGIES CO., LTD US202/A 100mΩ POWER DISTRIBUTION SWITCHES  DESCRIPTION The US202/A is a power distribution switch. It is particularly suitable for self-powered and bus-powered USB (Universal Series bus) applications. It has 28μA low quiescent supply current that meets the requirements of battery-powered portable equipments. A built-in charge pump is used to drive the N-channel N-MOSFET that is free of parasitic body diode to eliminate any reversed current flow across the switch when it is powered off. The US202/A incorporates some protection circuits such as current limit and short protection circuits, soft start circuit, thermal shutdown and UVLO (Under-voltage Lockout) protection circuits. The thermal shutdown circuits protect this device from damage when over current occurs, and the soft start circuits are used to prevent inrush current when plug-in event occurs. The US202/A can be used in such applications such as battery-powered equipments, motherboard USB power switches, USB device power switches, hot-plug power supplies, battery-charger circuits and so on.  FEATURES * Input Voltage Varies From 2.7V to 5.5V * Guaranteed Continuous Current: 1.0A/2.0A * High-Side NMOSFET: 85mΩ (TYP) * Soft Start * Current Limit:1.5A/2.5A * Thermal Protection * Low Supply Current: 28μA  ORDERING INFORMATION Ordering Number Lead Free Halogen Free US202XL-AF5-R US202XG-AF5-R US202AXL-AF5-R US202AXG-AF5-R Package SOT-25 SOT-25 CMOS IC Packing Tape Reel Tape Ree...