MIC2561-1YM-TR

Overview

The MIC2561-1YM-TR is a PCMCIA card switch matrix integrated circuit manufactured by Microchip Technology. It features an N-channel power switch configuration housed in a 14-SOIC package with a width of 3.90mm. The device operates within a load voltage range of 2.7V to 5.5V and supports a maximum output current of 1.25A. It includes fixed current limiting, overtemperature protection, and under-voltage lockout (UVLO). The component functions as a 3:2 input-to-output ratio switch matrix designed for portable computing applications.

Feature Summary

• Integrated PCMCIA card switch matrix architecture
• N-channel high-side power switching capability
• Built-in fault protection including current limit and thermal shutdown

Applications

• PCMCIA card slot power management
• Portable computer peripheral interface circuits
• Hot-swappable card connector systems

Procurement Notes

Verify the specific suffix '1YM' against the official Microchip datasheet to confirm pinout and electrical characteristics match the design requirements. Confirm that the 'TR' designation indicates tape and reel packaging if automated assembly is utilized. Check for any recent Product Change Notifications (PCN) regarding manufacturing site or material changes. Ensure the source document explicitly lists this part number as active or obsolete before finalizing procurement plans.

Selection Notes

Select this component when a dedicated switch matrix is required for PCMCIA interfaces rather than discrete switching solutions. The 14-SOIC package offers a balance of thermal performance and board space efficiency for portable designs. Consider the 1.25A current rating and 2.7V minimum operating voltage to ensure compatibility with standard PCMCIA power rails and load requirements.

Part Context

This part belongs to the MIC256x series of PCMCIA switch controllers from Microchip Technology, formerly Micrel. These components are specifically engineered to manage power distribution and signal routing for PC Card slots in laptops and mobile devices. The series provides integrated protection features essential for hot-plug operations in consumer electronics.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.