General Description
The MIC2537 is a cost-effective high-side power switch with four independently controlled channels, optimized for bus-powered Universal Serial Bus (USB) applications. Few external components are necessary to satisfy USB requirements.

Features
• Compliant to USB specifications
• 3V to 5.5V input
• 100mA minimum continuous load current per port
• 425mΩ typical on-resistance
• < 400mA current limit
• Individual open-drain fault flag leads
• 3V/5V-compatible enable inputs
• Active-high (-1) and active-low (-2) versions
• 100µA max. on-state supply current
• <1µA typical off-state supply current
• 16-lead SOP package
• –40°C to 85°C operation

Applications
• USB keyboards
• USB bus-powered docking stations
• Notebook docking stations
• Notebook PCs
• PDA
• General power distribution