MIC2042-1BM

Overview

The MIC2042-1BM is a single-channel USB power distribution switch manufactured by Microchip Technology. It operates within an input voltage range of 0.8V to 5.5V and provides current limiting capabilities adjustable between 0.5A and 3A. The device features a typical on-resistance of 40mΩ and includes undervoltage lockout (UVLO) with a threshold of approximately 0.225V. It is housed in an 8-pin SOIC package and supports an operating temperature range from -40°C to +85°C.

Feature Summary

• Integrates programmable current limiting for precise load protection
• Includes thermal shutdown circuitry to prevent damage during fault conditions
• Features soft-start functionality to minimize inrush current on capacitive loads
• Provides a fault status flag output for monitoring overcurrent events

Applications

• USB port power distribution and protection
• Battery-powered equipment load switching
• General-purpose high-side power management
• Multi-port USB hub applications

Procurement Notes

Verify the specific suffix 'BM' corresponds to the 8-pin SOIC package and tape-and-reel or tube availability as required by your assembly process. Confirm that the factory-set current limit matches your design requirements, as this variant typically has fixed parameters compared to programmable versions. Ensure compatibility with your PCB footprint for the SOIC-8 package before finalizing procurement.

Selection Notes

Select the MIC2042-1BM when a single-channel solution with integrated current limiting and thermal protection is required for low-voltage applications. This component is suitable for designs needing a compact 8-pin SOIC form factor. Consider alternative packages like TSSOP if higher pin density or different thermal performance is needed, or choose programmable variants if adjustable current thresholds are necessary for system flexibility.

Part Context

The MIC2042 series belongs to Microchip's family of USB power switches designed for general-purpose power distribution. These devices integrate N-channel MOSFETs with control logic to provide robust protection against short circuits and overloads. The series supports various packaging options to accommodate different board space constraints while maintaining consistent electrical performance characteristics across the product line.

Replacement Considerations

MIC2042-1YM: Same function in 8-pin SOIC package.

FAQ

What is the maximum input voltage supported by the MIC2042-1BM?

The device supports a maximum input voltage of 5.5V.

Does the MIC2042-1BM include reverse current blocking?

Yes, the internal MOSFET blocks reverse current flow when the device is disabled.