MIC2548-1YM

Overview

The MIC2548-1YM is a single-channel high-side power distribution switch from Microchip Technology. It features a programmable current limit ranging from 100 mA to 1.5 A, with a maximum on-resistance of 120 mOhms and an output current capacity of 500 mA. The device operates within a supply voltage range of 2.7 V to 5.5 V and supports temperatures from -40°C to +85°C. Key timing parameters include a maximum on-time of 5 ms and a maximum off-time of 22 µs. Packaged in an 8-SOIC format, it integrates protection mechanisms for robust DC power switching applications.

Feature Summary

• Integrates programmable current limiting functionality to protect downstream loads from overcurrent conditions
• Provides low-loss power distribution through optimized N-channel MOSFET architecture
• Supports advanced configuration and power interface (ACPI) standards for system management

Applications

• DC power distribution systems requiring precise current control
• Advanced Configuration and Power Interface (ACPI) compliant hardware designs
• General-purpose power management circuits for embedded systems

Procurement Notes

Verify the specific ordering suffix and package variant against the official Microchip datasheet DS20005725 to ensure compatibility with your PCB footprint and thermal requirements. Confirm that the component meets RoHS compliance standards if required by your manufacturing process. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components and ensure traceability.

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 500 mA continuous rating while verifying that the programmable limit setting aligns with the specific protection thresholds needed. Consider the 120 mOhm on-resistance for power dissipation calculations and confirm that the operating voltage range matches the system's power supply rails.

Part Context

The MIC2548-1YM belongs to the MIC2548 series of integrated high-side power switches designed for low-loss DC power switching. This series is optimized for applications requiring reliable power distribution and protection, such as those adhering to ACPI standards. The device complements other variants in the family, offering a balance of performance and integration for modern electronic systems.

Replacement Considerations

The MIC2544-1YMM-TR is a documented alternative within the same product family, featuring similar electrical characteristics and packaging options. Verify pinout compatibility and parameter alignment before substitution.