MIC2042-2YM

Overview

The MIC2042-2YM is a high-side power distribution switch manufactured by Microchip Technology. It features an N-channel MOSFET with a maximum on-resistance of 140 milliohms and supports a continuous output current of 500 mA. The device operates within a supply voltage range of 2.7 V to 5.5 V and includes fixed current limiting, thermal shutdown, and undervoltage lockout protection. Packaged in an 8-SOIC format, it provides fault status flagging and reverse current blocking capabilities for reliable circuit management.

Feature Summary

• Integrates soft-start circuitry to minimize inrush currents during capacitive load applications
• Provides a fault status flag output with filtering to prevent false triggering
• Features built-in reverse current blocking when the device is disabled

Applications

• USB peripheral power distribution
• Laptop and notebook computer power systems
• Personal digital assistant (PDA) power management
• PC card hot-swap applications

Procurement Notes

Verify that the specific part number MIC2042-2YM corresponds to the 8-SOIC package variant rather than other packaging options like MSOP or TSSOP. Confirm that the suffix 'M' indicates the commercial temperature range (-40°C to +85°C). Ensure compatibility with standard surface-mount assembly processes and check for moisture sensitivity level requirements prior to installation.

Selection Notes

Select this component for general-purpose power distribution where low on-resistance and compact packaging are required. It is suitable for designs needing integrated overcurrent and thermal protection without external sensing components. Consider the 500 mA current limit and 140 mOhm resistance when calculating power dissipation and voltage drop across the switch in the target application circuit.

Part Context

This device belongs to the MIC2025/2075 family of high-side MOSFET switches designed for circuit protection. It shares architectural similarities with the MIC2075 but differs in specific electrical parameters such as current limits and package availability. The product line focuses on providing robust protection mechanisms including thermal shutdown and undervoltage lockout for portable electronic devices.

Replacement Considerations

Public confirmed substitute part numbers: MIC2075-2YM.