MIC2544-2YM

Overview

The MIC2544-2YM is a single high-side power switch IC designed for USB power distribution and load driving applications. It operates within a supply voltage range of 2.7V to 5.5V and supports a maximum output current of 500mA. The device features a programmable current limit adjustable from 100mA to 1.5A, allowing for precise protection settings. Key electrical parameters include a maximum on-resistance (RdsOn) of 120mΩ, a maximum turn-on time of 5ms, and a maximum off-time of 22μs. It is housed in an 8-pin MSOP surface-mount package.

Feature Summary

• Integrates programmable current limiting with adjustable thresholds for customized overcurrent protection.
• Provides integrated thermal shutdown and undervoltage lockout for enhanced system reliability.
• Features a simple open-drain status flag output to indicate fault conditions or operational state.

Applications

• USB hub power switching and distribution
• Peripheral load driving in consumer electronics
• Hot-plug capable power management circuits

Procurement Notes

Verify the specific suffix against the manufacturer's official datasheet to confirm package type and tape-and-reel specifications. Ensure that the ordering part number matches the required lead-free and RoHS compliance status as defined by Microchip Technology. Cross-reference the component marking with the physical package dimensions to avoid substitution errors during assembly.

Selection Notes

Select this component when a single-channel high-side switch with adjustable current limits is required. It is suitable for applications needing protection against short circuits and overloads without external sensing resistors. Consider the 120mΩ on-resistance for efficiency calculations and ensure the operating temperature range meets the environmental requirements of the target design.

Part Context

The MIC2544-2YM belongs to the MIC2544 family of high-side switches manufactured by Microchip Technology. This series is engineered for robust power distribution in low-voltage digital systems. The device replaces discrete MOSFET solutions by integrating control logic, protection circuits, and the power switch into a compact footprint, simplifying board layout and reducing component count.

Replacement Considerations

MIC2544-1YM-TR