MIC2525

MIC2525 Micrel MIC2525 USB Power Control Switch Not Recommended for New Designs Refer to MIC2025 General Description The MIC2525 is an integrated high-side power switch, optimized for self-powered and bus-powered Universal Serial Bus (USB) applications. Few external components are necessary to satisfy USB requirements. The MIC2525 satisfies the following USB requirements: each switch channel supplies up to 500mA as required by USB downstream devices; the switch’s low on-resistance meets USB voltage drop requirements; fault current is limited to typically 750mA, well below the UL 25VA safety requirements; and a flag output is available to indicate fault conditions to the local USB controller. Soft start eliminates the momentary voltage drop on the upstream port that may occur when the switch is enabled in bus-powered applications. Additional features include thermal shutdown to prevent catastrophic switch failure from high-current loads, undervoltage lockout (UVLO) to ensure that the device remains off unless there is a valid input voltage present, and 3.3V and 5V logic compatible enable inputs. The MIC2525 is a UL recognized component and is available in active-high and active-low versions in 8-pin DIP and SOIC packages. Features Compliant to USB specifications UL Recognized Component 3V to 5.5V input 500mA minimum continuous load current per port 140mΩ maximum on-resistance 1.25A maximum short circuit current limit Open-drain fault f...