MIC4426CN

Overview

The MIC4426CN is a dual low-side MOSFET gate driver manufactured by Microchip Technology, housed in an 8-pin PDIP package. It provides independent inverting outputs with peak source and sink currents of 1.5A each. The device operates on a supply voltage range of 4.5V to 18V and supports logic levels compatible with both CMOS and TTL standards, defined by VIL of 0.8V and VIH of 2.4V. Typical rise and fall times are 20ns and 29ns respectively. It functions within a junction temperature range of -40°C to 150°C.

Feature Summary

• Dual independent low-side gate driver configuration for driving N-channel and P-channel MOSFETs
• Inverting input logic compatibility with standard CMOS and TTL interfaces
• High peak output current capability of 1.5A for rapid switching performance

Applications

• Low-side switching control for power MOSFETs in motor drive circuits
• Gate driving for isolated power supplies and DC-DC converters
• General-purpose high-current switching applications requiring robust drive signals

Procurement Notes

Verify the obsolete status of the MIC4426CN before procurement planning. Confirm availability of direct substitutes such as the MIC4426ZN if original stock is unavailable. Ensure that the selected replacement maintains identical pinout, electrical specifications, and package dimensions to guarantee seamless integration into existing designs without hardware modification.

Selection Notes

Select this component for applications requiring dual low-side driving with through-hole mounting constraints. The PDIP-8 package facilitates prototyping and manual assembly. Consider the 1.5A peak current rating when sizing heatsinking or PCB traces. Verify that the load capacitance and required switching speed align with the specified rise and fall times to ensure optimal performance and minimize switching losses.

Part Context

The MIC4426CN belongs to the MIC4426 family of dual MOSFET drivers from Microchip Technology, originally developed by Micrel. This series is designed for efficient control of power switches in various industrial and consumer electronics applications. The CN suffix specifically denotes the plastic dual in-line package variant, distinguishing it from surface-mount options like SOIC or MSOP packages available in the same functional family.

Replacement Considerations

The MIC4426ZN is listed as a direct substitute. Verify that the ZN variant matches the PDIP-8 package and electrical characteristics of the CN version to ensure compatibility.