MIC2041-1BMM

Overview

The MIC2041-1BMM is a single-channel low-voltage power distribution switch manufactured by Microchip Technology. It integrates a high-side MOSFET optimized for circuit protection in general-purpose power distribution applications. The device supports an operating voltage range from 0.8V to 5.5V and provides programmable current limiting with a maximum continuous output current of 1.5A. Key electrical characteristics include a maximum on-resistance of 75mΩ, short-circuit protection with thermal shutdown, and undervoltage lockout. The component features an auto-reset circuit breaker mode that latches the output off upon detecting overcurrent conditions lasting more than 28ms, resetting only when the load is removed or reduced.

Feature Summary

• Integrates auto-reset circuit breaker functionality that latches output off during prolonged overcurrent events exceeding 28ms
• Provides adjustable current limiting and thermal shutdown to protect both the device and connected loads
• Includes soft start circuitry designed to minimize inrush current for highly capacitive loads
• Features a fault status output flag to indicate overcurrent and thermal shutdown conditions

Applications

• Multi-port USB power distribution applications satisfying upstream and downstream requirements
• General-purpose power distribution systems requiring integrated circuit protection
• Low voltage electronic circuits needing programmable current limiting capabilities

Procurement Notes

Verify the specific suffix MM against official Microchip documentation to confirm package type and tape/reel specifications. Ensure compatibility with system voltage ranges between 0.8V and 5.5V. Confirm that the 1.5A current limit aligns with load requirements. Check for availability of supporting design tools and application notes from the manufacturer.

Selection Notes

Select this component for applications requiring precise control over power delivery with built-in protection mechanisms. The auto-reset feature distinguishes it from latching alternatives, simplifying recovery from fault conditions. Consider the 75mΩ on-resistance for efficiency calculations. Evaluate the need for the fault status flag for system monitoring integration.

Part Context

This part belongs to the MIC2040/2041 family of single-channel low-voltage power distribution switches. These devices are designed as high-side MOSFET switches offering comprehensive protection features including current limiting and thermal management. The family targets portable electronics and industrial applications where reliable power switching and load protection are critical.

Replacement Considerations

The MIC2040-1BMM serves as a functional substitute within the same family, differing primarily in the absence of the auto-reset circuit breaker mode found in the MIC2041 variant. Verify pinout compatibility and ensure the replacement meets the required 0.8V to 5.5V operating range and 1.5A current handling capacity.