Microchip Technology MIC2536-2YM

Description
The MIC2536 is a cost-effective high-side power switch with two independently controlled channels, optimized for bus-powered Universal Serial Bus (USB) applications. It requires few external components to meet USB requirements. Each switch channel can supply up to 100mA as required for USB bus-powered downstream devices. Fault current is limited to typically 275mA by fast-acting current-limit circuitry, minimizing voltage droop on the upstream port during fault conditions. A flag output with transient filter indicates fault conditions to the local USB controller but ignores short flag signals resulting from inrush current during hot plug-in events. Soft start eliminates 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 3.3V and 5V logic compatible enable inputs. The MIC2536 is available in active-high and active-low versions in 8-lead SOP and MSOP.

Features
Compliant to USB specifications
2.7V to 5.5V operating range
150mA minimum continuous load current per channel
400mΩ 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
3V/5V-compatible enable inputs
Active-high (-1) and active-low (-2) versions
Reverse-current blocking in off mode (no "body diode")
Soft-start circuit
100μA maximum on-state supply current
<1μA typical off-state supply current
-40°C to 85°C operation

Applications
USB keyboard bus-powered hubs
USB bus-powered docking stations
Notebook PCs
PDAs
General purpose power distribution applications
PC board hot swap
Inrush current-limiting