MIC4421AYN

Overview

The MIC4421AYN is a high-speed, low-side MOSFET gate driver manufactured by Microchip Technology. It features an inverting logic configuration and delivers a peak output current of 9 A. The device operates within a supply voltage range of 4.5 V to 18 V. It exhibits a rise time of 20 ns and a fall time of 24 ns. The component is housed in an 8-pin PDIP package and supports through-hole mounting. It functions reliably across an operating temperature range from -40°C to +85°C.

Feature Summary

• Provides robust 9A peak output current capability for driving large MOSFETs with improved safe operating margins.
• Features fast switching performance with nanosecond-level rise and fall times for high-speed applications.
• Utilizes an inverting logic interface that accepts standard logic inputs directly without external level shifting.

Applications

• High-speed power switching circuits requiring low-side control
• Industrial motor drive systems
• Power supply topologies utilizing MOSFETs

Procurement Notes

Verify the specific suffix 'YN' corresponds to the PDIP-8 through-hole package variant when sourcing. Confirm RoHS compliance status via the manufacturer's official documentation or datasheet revision history prior to procurement. Ensure the ordering quantity aligns with the factory tube packaging specifications provided by Microchip Technology.

Selection Notes

Select this component for applications requiring a single-channel, inverting low-side driver with high peak current capability. It is suitable for designs needing fast switching speeds and compatibility with standard logic levels. Consider the PDIP-8 package constraints for PCB layout and thermal management requirements compared to surface-mount alternatives.

Part Context

This part belongs to the MIC4421A series of MOSFET drivers, which are designed for ruggedness and efficiency. The MIC4421A specifically denotes the inverting version, contrasting with the non-inverting MIC4422A. Both share similar electrical characteristics but differ in signal polarity response.

Replacement Considerations

The MIC4422AYN serves as a functional substitute if a non-inverting configuration is acceptable. Other variants within the TC4421 family offer similar electrical performance but may utilize different packages such as DFN-8.