MIC2544-1YM

Overview

The MIC2544-1YM is a single-channel high-side power switch IC designed for USB and ACPI applications. It operates within a supply voltage range of 2.7V to 5.5V and supports an output current up to 1.5A. The device features a programmable current limit adjustable from 100mA to 1.5A, with a maximum on-resistance of 120mΩ. Key electrical parameters include a maximum turn-on time of 5ms and a maximum idle time of 22μs. It functions across an operating temperature range of -40°C to +85°C and is housed in an 8-SOIC package.

Feature Summary

• Integrates programmable current limiting and thermal protection for robust load management
• Provides status flag indication for fault monitoring and system diagnostics
• Designed to meet USB and ACPI specifications with minimal external component requirements

Applications

• USB port power distribution and switching
• ACPI-compliant power management systems
• Peripheral load switching in consumer electronics

Procurement Notes

Verify the specific suffix against the manufacturer's official datasheet to confirm package type and tape/reel specifications. Ensure compatibility with required voltage levels and current limits for the target application. Cross-reference the ordering part number with Microchip Technology documentation to avoid discrepancies between distributor listings and original equipment manufacturer data.

Selection Notes

Select this component when a single-channel high-side switch with adjustable current limiting is required for low-voltage applications. Consider the 8-SOIC package constraints and the 2.7V to 5.5V operating range. Evaluate the need for programmable current settings and thermal shutdown features relative to the load characteristics and system safety requirements.

Part Context

The MIC2544-1YM belongs to the MIC2544/MIC2548 family of power distribution switches. This series offers integrated solutions for managing power loads in portable and desktop systems. The family provides options for single and dual channel configurations, maintaining consistent interface and protection features across variants while differing in channel count and package styles.

Replacement Considerations

MIC2544-1YMM (MSOP package variant)

FAQ

What is the maximum output current capability of the MIC2544-1YM?

The device supports a maximum output current of 1.5A.

Does the MIC2544-1YM include thermal protection?

Yes, it includes overtemperature protection as part of its fault protection features.