MIC4421ACN

Overview

The MIC4421ACN 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 peak output currents of 9 A for both sourcing and sinking. The device features an inverting logic configuration with typical rise and fall times of 20 ns and 24 ns, respectively. Designed for through-hole mounting, it is housed in an 8-pin PDIP package. The component supports input logic levels of 0.8 V (VIL) and 3 V (VIH), ensuring compatibility with various control interfaces.

Feature Summary

• Provides high-current drive capability suitable for power switching applications
• Features fast switching speeds with nanosecond-level transition times
• Supports standard TTL/CMOS logic input thresholds

Applications

• Power supply circuits requiring efficient MOSFET switching
• Motor control systems utilizing low-side N-channel MOSFETs
• Industrial automation equipment involving power management

Procurement Notes

Verify the obsolete status of this specific part number before procurement planning. Confirm availability of direct replacements such as the MIC4421AZN if current stock is insufficient. Ensure that the selected substitute maintains identical pinout and electrical specifications to avoid redesign efforts. Check RoHS compliance requirements against the original datasheet specifications.

Selection Notes

Select this component for designs requiring robust low-side driving with moderate speed. Consider the PDIP-8 package for prototyping or applications where surface area is not constrained. Evaluate the 9 A peak current against the target MOSFET's gate charge requirements. Verify that the operating temperature range meets the environmental conditions of the final assembly.

Part Context

This device belongs to the MIC4421A series of gate drivers from Microchip Technology. It is designed specifically for driving N-channel power MOSFETs in low-side configurations. The series is known for providing reliable performance in industrial and consumer power electronics applications requiring efficient switching control.

Replacement Considerations

The MIC4421AZN is listed as a direct replacement for the MIC4421ACN. Verify that the AZN variant meets all original electrical and mechanical requirements.