US222

UNISONIC TECHNOLOGIES CO., LTD US222 Preliminary LINEAR INTEGRATED CIRCUIT 0.5A TO 2.0A HIGH-SIDE POWER DISTRIBUTION SWITCHES  DESCRIPTION The UTC US222 are low voltage cost-effective high-side power switches with flag function. These devices are particularly suitable for self-powered and bus-powered USB applications. The build-in N-MOSFET’s RDS(ON) which meets the requirements of USB voltage drop is as low as 85 mΩ. The UTC US222 contains a charge pump circuitry to drive the internal MOSFET switch and also incorporate such protection circuits: soft-start circuit protect these devices from being damaged by limiting inrush current during plug-in; thermal shutdown circuit is used to prevent catastrophic switch failure from high-current loads. UVLO is used to ensure that the device remains off unless there is a valid input voltage present. A flag output is designed to indicate fault conditions to the local USB controller.  FEATURES * Low MOSFET On Resistance: 85mΩ * Under-voltage Lockout * Compliant to USB Specifications * Over-current Protection * Available 4 Versions of Continuous Load: 0.5A/1.0A/1.5A/2.0A * Over Temperature Protection * Logic Level Enable Pin: Available with Active-high or Active-low * Load Short Protection with Fold-back Version * Deglitched FLAG Output with Open Drain * Low Supply Current: 68µA (Typ.) * No Reverse Current When Power Off * Low Shutdown Current: 1.0µA (Max) * With Output Shutdown Pull-low Resistor * Soft Start-up  ORDERI...