MIC2547-1YTS-TR

Overview

The MIC2547-1YTS-TR is a dual programmable current limit single high-side switch manufactured by Microchip Technology. It features two independent N-channel power switches in a 16-TSSOP package. The device supports an operating supply voltage range of 2.7 V to 5.5 V and delivers an output current of up to 1.5 A per channel. Key electrical parameters include a maximum on-resistance of 120 mΩ, a programmable current limit from 100 mA to 1.5 A, a maximum turn-on time of 5 ms, and a maximum dwell time of 22 µs. It operates within a temperature range of -40°C to +85°C.

Feature Summary

• Dual independent high-side power channels with individual programmable current limiting for precise load protection.
• Integrated thermal shutdown and over-current protection mechanisms to ensure robust operation under fault conditions.
• Compact surface-mount packaging designed for space-constrained portable and industrial electronic applications.

Applications

• USB peripheral power switching and distribution
• Portable consumer electronics power management
• Industrial control system I/O protection

Procurement Notes

Verify the specific suffix 'TR' indicates tape and reel packaging containing 2500 units, distinct from the tray-packaged 'YTS' variant. Confirm that the component is sourced from authorized Microchip Technology distributors to guarantee authenticity and traceability. Ensure the ordering part number matches the exact electrical specifications required for the target application design.

Selection Notes

Select this component when dual independent high-side switching with adjustable current limits is required within a low-voltage environment. The 1.5 A per-channel capability suits moderate-load applications, while the 120 mΩ on-resistance minimizes power loss. Consider the 16-TSSOP footprint for PCB layout constraints and verify compatibility with the 2.7 V to 5.5 V supply rail of the host system.

Part Context

This part belongs to the MIC254x series of USB power switches from Microchip Technology (formerly Micrel). It serves as a dual-channel alternative to single-channel variants like the MIC2546, offering independent control over two loads. The series is designed for protecting downstream devices from over-current and short-circuit events in portable and industrial systems.

Replacement Considerations

The MIC2546-1YTS-TR is a related dual-channel variant within the same family but differs in specific current limit configurations and internal resistance characteristics. Verify pinout compatibility and electrical parameter alignment before substitution. No other direct cross-model substitutes are confirmed in public documentation.