MIC4421YN

Overview

The MIC4421YN is a high-speed, low-side MOSFET gate driver manufactured by Microchip Technology. It features a single inverting output capable of delivering a peak current of 9A. The device operates within a supply voltage range of 4.5V to 18V and utilizes a PDIP-8 through-hole package. Key timing parameters include a typical rise time of 20ns and a fall time of 24ns. It functions within an ambient temperature range of -40°C to +85°C.

Feature Summary

• Provides robust 9A peak source and sink current for driving large MOSFETs
• Features fast switching speeds with approximately 20ns rise and 24ns fall times
• Includes inverting logic configuration for signal control
• Utilizes a rugged bipolar/CMOS/DMOS process for improved safe operating margin

Applications

• High-speed power switching circuits
• Motor drive systems requiring low-side control
• DC-DC converter topologies
• Industrial power management applications

Procurement Notes

Verify the specific suffix 'YN' corresponds to the PDIP-8 tube packaging when ordering. Confirm that the inverting logic type matches the system design requirements, as the non-inverting variant (MIC4422) differs functionally. Ensure the application environment remains within the specified -40°C to +85°C operational temperature limits for reliable performance.

Selection Notes

Select this component when a low-side driver with high peak current capability is required. The inverting configuration distinguishes it from the MIC4422 series. Consider the PDIP-8 package constraints if surface-mount alternatives are preferred. Verify input logic levels against the specified VIL and VIH thresholds to ensure proper interface compatibility with the controlling microcontroller or logic circuit.

Part Context

This part belongs to the MIC4421A/MIC4422A family of MOSFET drivers designed for efficiency and ease of use. The MIC4421A specifically denotes the inverting version, while the MIC4422A is non-inverting. Both share similar electrical characteristics but differ in logic polarity. The 'YN' suffix indicates the specific PDIP-8 through-hole package variant offered by Microchip.

Replacement Considerations

• MIC4421AYN

FAQ

Is the MIC4421YN an inverting or non-inverting driver?

The MIC4421YN is an inverting gate driver. The non-inverting equivalent in this family is the MIC4422.

What is the peak output current capability of this device?

The MIC4421YN provides a peak output current of 9A for both sourcing and sinking.