MIC4421ACM

Overview

The MIC4421ACM is a high-speed, low-side MOSFET driver manufactured by Microchip Technology. It features a peak output current of 2A and operates with a supply voltage range of 4.5V to 18V. The device utilizes a CMOS input structure compatible with standard logic families. Key electrical characteristics include a typical propagation delay of 70ns and a rise/fall time of 30ns. It is housed in an 8-lead SOIC package.

Feature Summary

• High peak output drive capability for fast MOSFET switching
• CMOS-compatible input interface for direct logic connection
• Integrated bootstrap diode for high-side driving applications

Applications

• DC motor control systems
• Power supply inverters
• Battery management systems

Procurement Notes

Verify the complete part number including suffixes such as 'ACM' against official Microchip documentation to ensure correct temperature grade and packaging. Confirm pinout compatibility with existing PCB layouts before procurement. Check for RoHS compliance status in the latest datasheet revision.

Selection Notes

Select this component when a single-channel low-side driver with moderate speed and 2A peak current is required. Ensure the application voltage stays within the 4.5V to 18V range. Consider thermal dissipation requirements based on the SOIC package limitations and duty cycle.

Part Context

This device belongs to the MIC4421 family of MOSFET drivers. It serves as a complementary solution to high-side drivers like the MIC4422. The family is designed for general-purpose power switching applications requiring reliable gate drive performance.

Replacement Considerations

Check Microchip's official cross-reference list for verified equivalents. Ensure any substitute matches the 8-SOIC package and 2A output current specification. Verify that alternative parts support the same input voltage levels and propagation delays.