MIC4427CM

Overview

The MIC4427CM is a dual low-side MOSFET gate driver from Microchip Technology, housed in an 8-SOIC surface-mount package. It features non-inverting logic inputs and delivers a peak output current of 1.5 A for both sourcing and sinking. The device operates within a supply voltage range of 4.5 V to 18 V. Typical switching performance includes a rise time of 20 ns and a fall time of 29 ns. It supports CMOS and TTL logic levels with input thresholds of 0.8 V and 2.4 V respectively. The junction temperature range extends from -40°C to +150°C.

Feature Summary

• Dual-channel architecture providing independent control for two low-side N-channel or P-channel MOSFETs.
• High-speed switching capability with nanosecond-level propagation delays for efficient power management.
• Robust BiCMOS/DMOS fabrication process ensuring high reliability and low quiescent power consumption.
• Direct compatibility with standard digital logic families including CMOS and TTL without external level shifting.

Applications

• DC-DC converter topologies requiring synchronous rectification
• Motor control systems driving low-side power switches
• Industrial power supplies and inverters
• Battery management systems

Procurement Notes

Verify the specific suffix 'CM' confirms the SOIC-8 package and commercial temperature grade. Confirm RoHS compliance status via the manufacturer's latest documentation. Check for moisture sensitivity labeling if storage conditions are critical. Ensure the ordering part number matches the required tape-and-reel or tube packaging format. Validate that the supplier provides original manufacturer traceability.

Selection Notes

Select this component when dual isolated low-side drive is required with moderate speed and high current capability. The non-inverting configuration simplifies logic interfacing compared to inverting alternatives. Consider the 1.5 A peak current rating against the target MOSFET gate charge requirements. Evaluate the 8-SOIC footprint constraints against available PCB real estate. Compare thermal dissipation characteristics against the expected ambient operating environment.

Part Context

This device belongs to the MIC4426/4427/4428 family of dual MOSFET drivers. The MIC4427 variant specifically offers non-inverting outputs, distinguishing it from the inverting MIC4426. It shares the same core BiCMOS technology and pinout structure as its siblings but differs in logical inversion behavior. This family is designed for applications demanding high efficiency and reliable switching performance in compact packages.

Replacement Considerations

The TC4427ACOA serves as a functional equivalent within the Microchip portfolio, offering similar dual low-side drive capabilities. Verify pin-to-pin compatibility and electrical parameter alignment before substitution. Ensure the replacement package type matches the existing board layout constraints.

FAQ

What is the logic input configuration for the MIC4427CM?

The MIC4427CM features non-inverting logic inputs, meaning the output state follows the input signal directly without phase inversion.

Can the MIC4427CM drive both N-channel and P-channel MOSFETs?

Yes, the datasheet specifies that the driver is suitable for driving both N-channel and P-channel MOSFETs in low-side configurations.

What is the typical rise time specification for this device?

The typical rise time for the MIC4427CM is specified as 20 ns under standard test conditions.