MIC2544-2YMM

Overview

The MIC2544-2YMM is a single high-side power switch IC from Microchip Technology, designed for USB power distribution applications. It features an N-channel output capable of delivering up to 1.5A continuous current with a maximum on-resistance of 120 mΩ. The device operates within a supply voltage range of 2.7V to 5.5V and includes programmable current limiting adjustable from 100mA to 1.5A. Integrated protection mechanisms include thermal shutdown and status flag reporting. It is housed in an 8-pin MSOP package and supports ACPI interface control.

Feature Summary

• Programmable current limit functionality allows precise load protection settings
• Integrated thermal shutdown prevents damage during over-temperature conditions
• Status flag output provides real-time fault indication
• High-side switching topology simplifies system integration

Applications

• USB hub power distribution
• Peripheral power switching
• Battery-powered device load management

Procurement Notes

Verify the specific suffix 'YMM' corresponds to the 8-MSOP surface-mount package configuration. Confirm that the order quantity aligns with the manufacturer's standard packaging requirements. Ensure compatibility with the required operating temperature range of -40°C to +85°C for your specific application environment before finalizing procurement.

Selection Notes

Select this component when a single-channel high-side switch with adjustable current limiting is required for low-voltage systems. It is suitable for applications needing integrated thermal protection and status feedback. Consider the 120 mΩ on-resistance for efficiency calculations and ensure the 2.7V to 5.5V input range matches the system power supply.

Part Context

This part belongs to the MIC2544 series of programmable current-limit high-side switches. It is functionally similar to the MIC2544-1YMM-TR but may differ in packaging or tape-and-reel specifications. The series is widely used in portable electronics and USB-based power management solutions requiring robust load protection.

Replacement Considerations

MIC2544-1YMM-TR is a documented substitute within the same product family. Verify pinout and package compatibility (8-MSOP) before replacement. Ensure that any alternative maintains the same current limit range and thermal protection characteristics.