MIC2548-1YM-TR

Overview

The MIC2548-1YM-TR is a single high-side power switch IC from Microchip Technology, designed for programmable current limiting in power distribution applications. It features an N-channel output capable of handling up to 1.5A with a maximum on-state resistance of 80 mΩ. The device operates within a supply voltage range of 2.7V to 5.5V and includes adjustable current limit settings ranging from 100 mA to 1.5 A. It provides fault protection through overcurrent and overtemperature shutdown mechanisms, housed in an 8-SOIC package suitable for surface-mount installation.

Feature Summary

• Programmable current limit allows customization of load protection thresholds
• Integrated overtemperature and overcurrent fault protection safeguards the load
• Single high-side switching configuration simplifies circuit design

Applications

• USB port power distribution and protection
• Peripheral device power switching
• Battery-powered system load management

Procurement Notes

Verify that the ordering suffix matches the required package type, as variations exist between SOIC and MSOP formats within the same series. Confirm RoHS compliance status and ensure the specific part number corresponds to the intended pinout and thermal characteristics. Cross-reference datasheet revisions to confirm active status and any recent packaging or material changes documented by the manufacturer.

Selection Notes

Select this component when a single-channel high-side switch with adjustable current limiting is required. Ensure the load current does not exceed the 1.5A maximum rating and that the operating voltage falls within the 2.7V to 5.5V range. Consider the 80 mΩ on-resistance for power dissipation calculations and verify that the 8-SOIC package fits the available PCB footprint constraints.

Part Context

This part belongs to the MIC2548 family of power switch ICs, which are engineered for efficient power distribution in portable and industrial electronics. The MIC2548 variant specifically offers a single channel with programmable limits, distinguishing it from multi-channel counterparts like the MIC2544. It serves as a robust solution for protecting sensitive loads against short circuits and overloads in low-voltage systems.

Replacement Considerations

The MIC2544-1YM-TR is a confirmed substitute within the same product family, offering similar high-side switching capabilities. Verify compatibility regarding package dimensions and electrical parameters before replacement. Other members of the MIC2548 series may serve as alternatives if multi-channel functionality is acceptable.