MIC4420CT

Overview

The MIC4420CT is a low-side MOSFET gate driver manufactured by Microchip Technology, housed in a TO-220-5 package. It delivers a peak output current of 6A and operates within a supply voltage range of 4.5V to 18V. The device features non-inverting logic inputs compatible with voltages from 2.4V to VS. Key electrical parameters include matched rise and fall times of 25ns, a typical propagation delay of 55ns, and an output impedance of 2.5Ω. It supports capacitive loads up to 10,000pF and withstands negative input swings of up to 5V.

Feature Summary

• Provides high peak output current capability for driving large MOSFETs
• Features CMOS construction with latch-up protection against reverse output current
• Accepts logic inputs ranging from 2.4V to the supply voltage without external components
• Includes protection circuits for electrostatic discharge and negative input swing tolerance

Applications

• Switch mode power supplies
• Motor controls
• Pulse transformer drivers
• Class-D switching amplifiers

Procurement Notes

Verify the specific suffix 'CT' corresponds to the TO-220-5 package configuration as documented in official Microchip datasheets. Confirm RoHS compliance status and moisture sensitivity level (MSL) requirements for your assembly process. Ensure the ordering part number matches the exact pinout and thermal characteristics required for your PCB layout design.

Selection Notes

Select this component when a robust low-side driver with 6A peak current is required for power applications. It is suitable for designs needing non-inverting logic compatibility and high noise immunity due to its ability to tolerate negative input swings. Consider the TO-220-5 package for through-hole mounting and improved thermal dissipation compared to surface-mount alternatives.

Part Context

The MIC4420 is part of the MIC4420/4429/429 family of MOSFET drivers from Microchip Technology (formerly Micrel). While the MIC4429 and MIC429 are inverting drivers, the MIC4420 provides a non-inverting configuration. This family utilizes a Bipolar/CMOS/DMOS process to ensure efficient operation and ease of use in various power management and motor control environments.

Replacement Considerations

Public confirmed substitute part numbers: MIC4420YMM (MSOP-8 package), MIC4420YM (SOIC-8 package). Verify package footprint and pinout compatibility before substitution.