MIC2549A-1YTS-TR

Overview

The MIC2549A-1YTS-TR is a high-side power switch IC from Microchip Technology, designed for programmable current limiting and over-temperature protection. It operates within a supply voltage range of 2.7 V to 5.5 V and features an adjustable current limit with a maximum output current of 3 A. The device is housed in a 14-TSSOP package and supports an operating temperature range from -40°C to +85°C. It includes an off-time maximum of 25 µs for thermal management and utilizes a reel packaging format.

Feature Summary

• Programmable current limit functionality for precise load protection
• Integrated over-temperature latch mechanism for enhanced safety
• High-side switching capability with adjustable current thresholds

Applications

• USB power distribution systems
• Peripheral power switching in computing devices
• Load driver applications requiring thermal protection

Procurement Notes

Verify the specific suffix 'TR' indicates reel packaging when ordering. Confirm that the '1' designation corresponds to the single-channel configuration. Ensure the TSSOP-14 package variant matches the target PCB footprint requirements. Cross-reference the manufacturer part number with official Microchip documentation to validate the exact electrical specifications and pinout assignments before finalizing procurement.

Selection Notes

Select this component for applications requiring a single high-side switch with programmable current limiting. It is suitable for systems operating between 2.7 V and 5.5 V where thermal latch protection is necessary. Consider the 14-TSSOP package size for space-constrained designs. Evaluate the 3 A current capacity against peak load requirements to ensure adequate headroom.

Part Context

This part belongs to the MIC2549A series of power switch ICs, which are optimized for power distribution and load driving. The series typically includes variants with different channel counts and package options. The MIC2549A-1YTS-TR specifically denotes the single-channel version in a tape-and-reel format, distinguishing it from tube-packaged or multi-channel counterparts like the MIC2546.

Replacement Considerations

The MIC2549A-1YM-TR is a related variant within the same family, differing primarily in packaging type (tube vs. reel). Direct substitution requires verifying that the packaging change does not impact assembly processes. No other cross-model substitutes are confirmed in the provided data.