MIC4421ZN

Overview

The MIC4421ZN is a high-speed, low-side single inverting MOSFET gate driver manufactured by Microchip Technology. It operates within a supply voltage range of 4.5 V to 18 V and delivers a peak output current of 9 A. The device features a propagation delay of 15 ns, with rise and fall times of 20 ns and 24 ns respectively. It is housed in an 8-PDIP package and supports through-hole mounting. The operational temperature range extends from -40°C to +85°C.

Feature Summary

• Delivers high peak output current for rapid switching of power devices
• Provides fast propagation delay and transition times for high-frequency applications
• Features inverting logic configuration for signal control

Applications

• High-speed MOSFET switching circuits
• Power management systems requiring low-side drive
• Industrial motor control interfaces

Procurement Notes

Verify the specific suffix 'ZN' indicates lead-free packaging and RoHS compliance as per Microchip standards. Confirm the PDIP-8 package dimensions match your PCB footprint requirements. Ensure the operating environment stays within the specified -40°C to +85°C temperature range for reliable performance.

Selection Notes

Select this component when a single-channel, low-side driver with 9A capability is required. The inverting output simplifies logic interfacing where phase inversion is needed. Consider thermal dissipation limits if driving heavy capacitive loads continuously.

Part Context

This part belongs to the MIC4421 family of high-speed MOSFET drivers. It serves as a direct replacement for older variants like the MIC4421CN, offering improved environmental compliance while maintaining identical electrical characteristics and pinout compatibility for legacy designs.

Replacement Considerations

The MIC4421CN is listed as a discontinued direct substitute with identical specifications.