MIC4421ZM

Overview

The MIC4421ZM is a high-speed, low-side MOSFET gate driver manufactured by Microchip Technology. It features a totem-pole output stage capable of delivering a peak output current of 9 A. The device operates within a supply voltage range of 4.5 V to 18 V and draws an operating supply current of 400 uA. It is housed in an 8-pin SOIC package and supports standard input characteristics with inverted output polarity.

Feature Summary

• Delivers high peak output current for rapid switching
• Utilizes a totem-pole output architecture
• Designed for low-side MOSFET applications

Applications

• Low-side MOSFET driving
• Power management circuits
• Motor control systems

Procurement Notes

Verify the specific manufacturer part number against official Microchip documentation to ensure authenticity. Confirm that the component meets required RoHS compliance standards and check for moisture sensitivity handling requirements during storage and assembly processes.

Selection Notes

Select this component when a high-current drive capability is required for low-side power switches. Ensure the application voltage remains within the specified 4.5 V to 18 V range. Consider the SOIC-8 package constraints and thermal dissipation capabilities relative to the expected duty cycle and ambient temperature conditions.

Part Context

This component belongs to the MIC44xx series of gate drivers from Microchip Technology. It is specifically engineered as a low-side driver, distinguishing it from high-side or half-bridge variants within the broader product family. The ZM suffix typically denotes the package type and temperature rating.

FAQ

What is the output polarity of the MIC4421ZM?

The MIC4421ZM provides an inverted output polarity.

Is the MIC4421ZM suitable for high-side driving?

No, the MIC4421ZM is designed exclusively as a low-side MOSFET driver.