Microchip | MIC2536-2YM

The MIC2536-2YM is a cost-effective high-side power switch, with two independently controlled channels, optimized for bus-powered Universal Serial Bus (USB) applications. Few external components are necessary to satisfy USB requirements.

Each switch channel of the MIC2536 will supply up to 100 mA as required for USB bus-powered downstream devices. Fault current is limited to typically 275 mA by fast-acting current-limit circuitry which minimizes voltage droop on the upstream port during fault conditions. A flag output with transient filter indicates fault conditions to the local USB controller but will ignore short flag signals resulting from inrush current during hot plug-in events.

Soft start eliminates the momentary voltage droop on other ports 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 and 3.3 V and 5 V logic compatible enable inputs. The MIC2536-2YM is available in active-high and active-low versions in 8-lead SOP and MSOP.

Key Features:

• Compliant to USB specifications
• 2.7 V to 5.5 V operating range
• 150 mA minimum continuous load current per channel
• 400 Om typical on-resistance
• Fast-acting short circuit protection with
• Thermal shutdown
• Integrated filter eliminates
• False overcurrent flag assertions
• Individual open-drain fault flag pins with transient filter
• 3 V/5 V-compatible enable inputs
• Active-high (-1) and active-low (-2) versions
• Reverse-current blocking in off mode (no “body diode”)
• Soft-start circuit
• 100 µA maximum on-state supply current
• <1 µA typical off-state supply current
• –40°C to 85°C operation  

Applications:

• USB keyboard bus-powered hubs
• SB bus-powered docking stations
• Note Book PCs
• PDAs
• General purpose power distribution applications
• PC board hot swap
• Inrush current-limiting   

To learn more about the MIC2536 product family, Click Here.