MIC4421AZN

Overview

The MIC4421AZN is a single-channel, low-side 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 an inverting logic configuration with typical rise and fall times of 20 ns and 24 ns, respectively. It is housed in an 8-pin PDIP package and supports operation at temperatures up to 150°C junction temperature.

Feature Summary

• Provides high-speed switching capabilities for N-channel power MOSFETs
• Features a robust totem-pole output stage capable of sourcing and sinking 9 A
• Supports TTL and CMOS input logic levels for flexible interfacing

Applications

• High-frequency DC-DC converter designs
• Motor control systems requiring fast switching speeds
• Inverter circuits for power conversion applications

Procurement Notes

Verify the specific suffix 'ZN' corresponds to the PDIP-8 package and commercial/industrial temperature range when ordering. Confirm RoHS compliance status as required by your assembly process. Ensure the supplier provides valid traceability documentation for quality assurance purposes.

Selection Notes

Select this component when a single low-side driver with high peak current is required. Compare against the TC4421A series if automotive qualification or extended temperature ranges are necessary. Consider the PDIP-8 package constraints for thermal management in high-current applications.

Part Context

This part belongs to the MIC4421/MIC4422 family of high-speed MOSFET drivers. It serves as a direct replacement for older variants like the MIC4421ACN, which has been discontinued. The device is designed to replace discrete driver solutions, offering improved performance and reduced board space.

Replacement Considerations

• MIC4421ACN (Discontinued)

FAQ

Is the MIC4421AZN available in a surface-mount package?

No, the MIC4421AZN specifically denotes the through-hole PDIP-8 package. Surface-mount versions typically carry different suffixes such as 'AT'.

What is the maximum operating junction temperature?

The MIC4421AZN supports a maximum operating junction temperature of 150°C.