MIC2544A-1YM

Overview

The MIC2544A-1YM is a high-side power distribution switch manufactured by Microchip Technology. It features an N-channel output with a maximum continuous current of 1.5A and a typical on-resistance of 80 milliohms. The device operates within a load voltage range of 2.7V to 5.5V and supports a non-inverting open/switch interface. Integrated fault protection includes adjustable current limiting and overtemperature shutdown. The component is housed in an 8-SOIC package and functions across a temperature range of -40°C to +85°C.

Feature Summary

• Integrates programmable current limiting for precise load protection
• Provides status flag indication for system monitoring
• Includes built-in thermal shutdown for enhanced reliability

Applications

• USB port power switching and protection
• ACPI-compliant power distribution systems
• Peripheral load driver circuits

Procurement Notes

Verify the specific suffix against official Microchip documentation to confirm package type and tape/reel specifications. Ensure compatibility with required operating temperatures and electrical ratings before integration. Cross-reference datasheet revisions to confirm compliance with RoHS3 standards and any recent manufacturing changes.

Selection Notes

Select this component when a single-channel high-side switch with integrated protection is required. Consider the 8-SOIC package constraints and the 2.7V to 5.5V input range. Evaluate the need for adjustable current limiting versus fixed limits found in other variants within the family.

Part Context

This part belongs to the MIC2544 series, designed as a cost-effective solution for USB and ACPI applications. It requires minimal external components compared to discrete solutions. The series integrates control logic and power MOSFETs into a single compact package for efficient power management.

Replacement Considerations

MIC2544-1YM is a direct functional equivalent within the same product family.