AIC1525

AIC1525 USB High-Side Power Switch n FEATURES l l l l l l l l l l l 70mΩ (5V Input) High-Side MOSFET Switch. 500mA Continuous Load Current per Channel. 75µA Typical On-State Supply Current. 1µA Typical Off-State Supply Current. Current-Limit / Short Circuit Protection. Thermal Shutdown Protection under Overcurrent Condition. Undervoltage Lockout Ensures that Switch is off at Start Up. Output can be Forced Higher than Input (Off-State). Open-Drain Fault Flag. Slow Turn ON and Fast Turn OFF. Enable Active-High or Active-Low. n DESCRIPTION The AIC1525 is an integrated high-side power switch for self-powered and bus-powered Universal Serial Bus (USB) applications. The high-side switch is a MOSFET with 70mΩ RDS(ON), which meets USB voltage drop requirements for maximum transmission wire length. Multi-purpose open-drain fault flag output indicates over-current limiting, thermal shutdown, or undervoltage lockout. Output current is typically limited to 0.85A below the 5A safety requirement, and thermal shutdown function shuts the switch off to prevent damage under overcurrent condition. n APPLICATIONS USB Power Management. l l Hot Plug-In Power Supplies. Battery-Charger Circuit. n TYPICAL APPLICATION CIRCUIT VCC 5.0V 33µ F 4.50 V to 5.25V Upstream VBUS 100mA max VBUS D+ DGND + µ 1 F C IN 10K Guaranteed minimum output rise time limits inrush current during hot plug-in, minimizing EMI and preventing the voltage at upstream port from dropping excessively. AI C17 2 2 IN OUT ...