USB POWER SWITCH

The PI5PD2041B is an integrated 70m? N-channel MOSFET power switches for self-powered and buspowered Universal Series Bus (USB) applications. The devices are equipped with charge pump circuitry to drive the internal MOSFET switch. The switch’s low RDS(on) , 70m? meets USB voltage drop requirements. This power-distribution switch is designed to set current limit at 1.0A typically. When the output load exceeds the current-limit threshold or a short-circuit situation is present, the devices limit the output current by switching into a constant-current mode, pulling the over-current (/OC) logic output low. When continuous heavy overloads and short-circuits increase the power dissipation in the switch, causing the junction temperature to rise, a thermal protection circuit turns off the switch to prevent damage. Recovery from a thermal shutdown is automatic once the device has cooled sufficiently. Internal circuitry ensures that the switch remains off until valid input voltage is present. 70m? High-Side MOSFET 0.5A Continuous Current Thermal and Short-Circuit Protection Accurate Current Limit (1.0A typ.) Operating Range: 2.7V to 5.5V 0.6ms Typical Rise Time Under-Voltage Lockout Deglitched Fault Report (/OC) 1µA Maximum Standby Supply Current Reverse Current Blocking Ambient Temperature Range: -40°C to 85°C Lead free and Green 5-Pin SOT23