Microchip MIC2544-1YM

USB-переключатель1Не требуется1.5A

Overview

The MIC2544-1YM and MIC2548 are integrated, high-side power switches optimized for low loss DC power switching and other power management applications, including Advanced Configuration and Power Interface (ACPI).The MIC2544/48 is a cost-effective, highly integrated solution that requires few external components to satisfy USB and ACPI requirements.Load current management features include a precision resistor-programmable output current-limit and a soft-start circuit which minimizes inrush current when the switch is enabled. Thermal shutdown, along with current-limit, protects the switch and the attached device.The MIC2544/48's open-drain flag output is used to indicate current-limiting or thermal shutdown to a local controller. The MIC2548 has an additional internal latch which turns the output off upon thermal shutdown providing robust fault control. The enable signal is compatible with both 3V and 5V logic, and is also used as the thermal shutdown latch reset for the MIC2548.The MIC2544-1YM and MIC2548 are available in active-high and active-low enable versions in the 8-pin SOIC (small-outline integrated circuit) and 8-pin MSOP (microsmall- outline package).

Features

2.7V to 5.5V Input

Adjustable Current-Limit up to 1.5A

Reverse Current Flow Blocking (No“Body Diode")

75μA Typical On-State Supply Current

1μA Typical Off-State Supply Current

120 mQ Maximum On-Resistance

Open-Drain Fault Flag

Thermal Shutdown

Thermal Shutdown Output Latch (MIC2548)

2 ms (Slow) Turn-On and Fast Turn-Off

Available with Active-High or Active-L ow Enable

Applications

USB Power Distribution

PCI Bus Power Switching

Notebook PC

ACPI Power Distribution

PC Card Hot Swap Applications

Inrush Current-Limiting