MIC2039BYMT-TR

Overview

The MIC2039BYMT-TR is a high-side power distribution switch manufactured by Microchip Technology, housed in a 6-pin 2mm x 2mm thin DFN package. It operates within an input voltage range of 2.5V to 5.5V and supports an output current up to 350mA with an adjustable current limit programmable from 200mA to 2.5A via an external resistor. The device features a maximum on-resistance of 125mΩ and includes thermal shutdown protection. It offers a unique Kickstart feature for managing high inrush currents during startup or steady-state operation.

Feature Summary

• High-accuracy current limiting with ±5% tolerance
• Kickstart capability for momentary high-current surges
• Open drain fault status flag with built-in delay
• Thermal shutdown protection for system reliability

Applications

• Power distribution in portable electronic devices
• Charging loads with high inrush currents such as capacitors
• System reliability enhancement in embedded applications

Procurement Notes

Verify the specific suffix 'YMT' corresponds to the 6-pin 2mm x 2mm thin DFN package and tape-and-reel configuration. Confirm that the 'B' variant meets the required ±5% current-limit accuracy specifications. Ensure compatibility with active-high or active-low logic level enable inputs as per the design requirements. Cross-reference the datasheet for the exact pinout and thermal characteristics.

Selection Notes

Select this component when precise current limiting and robust protection are required for high-side switching applications. The adjustable current limit allows customization for various load requirements. The Kickstart feature is essential for applications involving significant inrush currents. Consider the operating temperature range and package size constraints for integration into compact designs.

Part Context

The MIC2039 series provides high-side MOSFET power distribution switches designed to enhance system reliability. These switches integrate current limiting and thermal shutdown to protect both the device and the connected system. The family offers flexibility through programmable current limits and multiple enable control options, catering to diverse power management needs in modern electronics.

Replacement Considerations

MIC2039BYM6-TR (SOT-23 package)

FAQ

How does the Kickstart feature benefit the MIC2039BYMT-TR?

It allows momentary high-current surges up to the secondary current limit during startup or steady state, which is useful for charging loads with high inrush currents like capacitors.

What protection mechanisms are included in the MIC2039BYMT-TR?

The device includes internal current limiting with 5% accuracy and thermal shutdown to protect the device and system from overcurrent and overheating conditions.