MIC2041-2BMM

Overview

The MIC2041-2BMM is a high-side power switch IC designed for general-purpose power distribution and circuit protection. It operates within an input voltage range of 0.8V to 5.5V and supports up to 1.5A continuous output current with a maximum on-resistance of 75mΩ. The device features programmable current limiting, thermal shutdown, and soft-start functionality to manage inrush currents. A key characteristic is its auto-reset circuit breaker mode, which latches the output off during overcurrent conditions lasting longer than 28ms and resets upon load reduction.

Feature Summary

• Auto-reset circuit breaker mode that latches output off during prolonged overcurrent events
• Integrated soft-start circuitry to minimize inrush current for capacitive loads
• Fault status flag output for detecting overcurrent and thermal shutdown conditions

Applications

• Multi-port USB applications requiring upstream/downstream power management
• General purpose power distribution systems
• Circuit protection for sensitive electronic loads

Procurement Notes

Verify the specific suffix '2BMM' against official Microchip documentation to confirm package type and temperature grade. Ensure compatibility with system voltage requirements between 0.8V and 5.5V. Confirm that the auto-reset behavior aligns with application fault recovery needs. Check for updated datasheets as product specifications may evolve.

Selection Notes

Select this component when auto-reset capability is required following sustained overcurrent faults. Compare with MIC2040 if manual reset or different latch-up behavior is preferred. Verify that the 1.5A current limit and 75mΩ resistance meet load requirements. Consider the soft-start timing for applications with large capacitive loads.

Part Context

The MIC2041-2BMM belongs to the MIC2040/2041 family of high-side MOSFET switches. While the MIC2040 offers standard protection, the MIC2041 variant specifically includes the auto-reset circuit breaker feature. This family is optimized for low-voltage power distribution where compact size and integrated protection are critical.

Replacement Considerations

MIC2040-2BMM (Manual Reset Variant)

FAQ

How does the MIC2041-2BMM recover from an overcurrent fault?

It utilizes an auto-reset circuit breaker mode that latches the output off if the overcurrent condition persists for more than 28ms. The output automatically resets once the load is removed or reduced.

What is the function of the soft-start circuitry in this device?

The soft-start circuitry minimizes inrush current, which is particularly beneficial for applications employing highly capacitive loads.