MIC2548A-2YMM

Overview

The MIC2548A-2YMM is a single-channel high-side power switch IC from Microchip Technology, designed for robust power distribution applications. It features an adjustable current limit ranging from 100 mA to 1.5 A, allowing precise protection against overcurrent conditions. The device operates with a supply voltage between 2.7 V and 5.5 V and delivers up to 500 mA of output current. Key electrical characteristics include a maximum on-state resistance of 80 mΩ and a typical enable time of 5 ms. It is housed in an 8-pin MSOP package and functions reliably within a temperature range of -40°C to +85°C.

Feature Summary

• Programmable current limiting capability allows customization of fault protection thresholds
• High-side switching architecture provides efficient load control and ground reference independence
• Integrated thermal shutdown protects the device from overheating during fault conditions

Applications

• Peripheral power management in embedded systems
• Load switching for USB and serial interface circuits
• Power distribution units requiring overcurrent protection

Procurement Notes

Verify the specific suffix 'YMM' corresponds to the 8-pin MSOP tube packaging configuration when ordering. Confirm that the programmable current limit settings align with your circuit requirements, as external components may be necessary to set the threshold. Ensure compatibility with the 2.7 V to 5.5 V operating voltage range of your system design before procurement.

Selection Notes

Select this component when a single-channel high-side switch with adjustable current limiting is required. It is suitable for applications needing moderate current handling up to 500 mA with precise overcurrent protection. Consider the MSOP package size for space-constrained designs. Verify that the input voltage range matches your system's logic levels and power supply rails.

Part Context

This part belongs to the MIC2548 series of power distribution ICs from Microchip Technology. The series offers various channel configurations and packaging options to suit different power management needs. The MIC2548A variant typically includes enhanced features or tighter specifications compared to earlier versions, focusing on reliability and performance in industrial and consumer electronics applications.

Replacement Considerations

Check for direct substitutes like the MIC2548-2YM or MIC2548A-2YMM-TR, ensuring pinout and electrical parameters match. Verify if tape-and-reel packaging is acceptable instead of tube. Confirm that any alternative maintains the same current limit adjustability and thermal protection features.