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1FEATURES DESCRIPTION 2 The LM3525 provides Universal Serial Bus standard
? Compatible with USB1.1 and USB 2.0 power switch and over-current protection for all host
? 1 ms Fault Flag Delay During Hot-Plug Events port applications. The single port device is ideal for
? Smooth Turn-On Eliminates Inrush Induced Notebook PC and Handheld PC applications that Voltage Drop supply power to one port.
? UL Recognized Component: REF # 205202 A 1 ms delay on fault flag output prevents erroneous
? 1A Nominal Short Circuit Output Current overcurrent reporting caused by inrush currents Protects Notebook PC Power Supplies during the hot-plug events.
? Thermal Shutdown Protects Device in Direct The LM3525 accepts an input voltage between 2.7V Short Condition and 5.5V allowing use as a device-based inrush current limiter for 3.3V USB peripherals, as well as
? 500mA Minimum Continuous Load Current Root and Self-Powered Hubs at 5.5V. The Enable
? Small SOIC-8 Package Minimizes Board Space input accepts both 3.3V and 5.0V logic thresholds.
? 2.7V to 5.5V Input Voltage Range The small size, low RON, and 1 ms fault flag delay
? Switch Resistance ≤ 120 m???? Max. at VIN = 5V make the LM3525 a good choice for root hubs as well
? 1µA Max Standby Current as ganged power control in space-critical selfpowered hubs.
? 100 µA Max Operating Current ? Undervoltage Lockout (UVLO)
APPLICATIONS
? Universal Serial Bus (USB) Root Hubs including Desktop and Notebook PC
? USB Monitor Hubs
? Other Self-Powered USB Hub Devices
? High Power USB Devices Requiring Inrush Limiting
? General Purpose High Side Switch Applications
