General Description

The MIC2544A and MIC2548A 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 MIC2544A/48A is a cost-effective, highly integrated solution that requires few external components to satisfy USB and ACPI requirements.

Features

• 2.7V to 5.5V input

• Adjustable current-limit up to 1.5A

• Reverse current flow blocking (no “body diode”)

• 90µA typical on-state supply current

• 1μA typical off-state supply current

• 120mΩmaximum on-resistance

• Open-drain fault flag

• Thermal shutdown

• Thermal shutdown output latch (MIC2548A)

• 2ms (slow) turn-on and fast turn-off

• Available with active-high or active-low enable

Applications

• USB power distribution

• PCI bus power switching

• Notebook PC

• ACPI power distribution

• PC card hot swap applications

• Inrush current-limiting

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