MIC2040-1YMM

Overview

The MIC2040-1YMM is a single-channel high-side power distribution switch manufactured by Microchip Technology. It integrates a low-voltage MOSFET optimized for general-purpose circuit protection in applications requiring switching voltages from 0.8V to 5.5V. The device features programmable current limiting and thermal shutdown capabilities to safeguard both the switch and the load against overcurrent and overheating conditions. A dedicated fault status output pin provides real-time indication of overcurrent or thermal fault events, facilitating system monitoring and diagnostics.

Feature Summary

• Integrates soft-start circuitry to minimize inrush currents when powering highly capacitive loads
• Provides adjustable current limiting with fast reaction times to short-circuit conditions
• Includes undervoltage lockout and reverse current flow blocking when disabled

Applications

• General-purpose power distribution circuits requiring integrated protection
• Multi-port USB applications satisfying upstream and downstream power requirements
• Portable electronic devices operating within low voltage ranges

Procurement Notes

Verify the specific suffix 'YMM' corresponds to the required tape-and-reel packaging configuration during procurement. Confirm that the single-channel variant aligns with the design's channel count requirements. Ensure compatibility with the target operating temperature range and input voltage specifications before finalizing component selection.

Selection Notes

Select this component for designs necessitating a single protected high-side switch with adjustable current limits. Consider the MIC2041 if auto-reset circuit breaker functionality is required instead of latching faults. Evaluate the package size constraints as the YMM suffix indicates a small outline package suitable for space-constrained PCB layouts.

Part Context

This part belongs to the MIC2040/2041 family of low-voltage power switches originally developed by Micrel and acquired by Microchip Technology. The family is designed to replace discrete MOSFET and protection circuits, offering a compact solution for power management in portable electronics and industrial control systems requiring reliable load protection.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.