MIC2545A-2YTS-TR

Overview

The MIC2545A-2YTS-TR is a single-channel high-side power switch IC designed for USB power distribution applications. It operates within a supply voltage range of 2.7 V to 5.5 V and features an adjustable current limit ranging from 500 mA to 3 A. The device incorporates a maximum on-resistance of 50 mΩ, ensuring efficient power delivery. Key timing specifications include a maximum turn-on time of 5 ms and a maximum idle time of 25 µs. It is housed in a TSSOP-14 surface-mount package and supports operation across a temperature range of -40°C to +85°C.

Feature Summary

• Provides programmable current limiting functionality to protect downstream loads from overcurrent conditions.
• Integrates noise suppression capabilities to maintain signal integrity for sensitive USB peripherals.
• Features a high-side N-channel architecture with low on-resistance for efficient power distribution.

Applications

• USB hub power switching
• Portable device power management
• Peripheral protection circuits

Procurement Notes

Verify the specific suffix '2YTS-TR' against the official Microchip datasheet to confirm the TSSOP-14 package and tape-and-reel packaging configuration. Ensure that the required current limit settings align with the external resistor programming requirements specified in the electrical characteristics section. Confirm compliance with RoHS directives as indicated in the product documentation.

Selection Notes

Select this component when a single-channel high-side switch with adjustable current limiting is required for 5V USB systems. Consider the 50 mΩ on-resistance for thermal management and the 2.7 V to 5.5 V operating range for compatibility with standard logic levels. Evaluate the TSSOP-14 footprint against available PCB space and ensure the thermal performance meets the application's dissipation needs under maximum load conditions.

Part Context

This part belongs to the MIC2545A family of USB power switches manufactured by Microchip Technology. It is distinct from variants such as the MIC2545A-2YN (through-hole) or MIC2545A-1YTS-TR (different pinout/configuration). The family focuses on providing robust power distribution solutions with integrated protection features for consumer electronics and industrial interfaces.

Replacement Considerations

Publicly confirmed substitute part numbers are not identified in the provided source material. Consult the manufacturer's official cross-reference tools or datasheet footnotes for verified alternatives before implementation.