MIC4427BN

Overview

The MIC4427BN is a dual low-side MOSFET gate driver from the MIC4426/4427/4428 family, fabricated on a BiCMOS/DMOS process. It features non-inverting outputs with a peak source and sink current of 1.5 A. The device operates within a supply voltage range of 4.5 V to 18 V. Key timing parameters include a rise time of 20 ns and a fall time of 29 ns. It is housed in an 8-pin PDIP package with a .300-inch body width.

Feature Summary

• Dual low-side configuration for driving two N-channel MOSFETs
• High peak output current capability of 1.5 A
• Non-inverting logic input configuration
• BiCMOS/DMOS fabrication for high efficiency

Applications

• DC-DC converter circuits
• Motor control systems
• Power supply designs

Procurement Notes

Verify the specific suffix 'BN' corresponds to the 8-pin PDIP package when sourcing. Confirm RoHS compliance status through official Microchip documentation or authorized distributors. Ensure storage conditions account for moisture sensitivity levels as indicated in the datasheet. Cross-reference ordering information directly with manufacturer catalogs to avoid packaging discrepancies.

Selection Notes

Select this component for applications requiring dual low-side drive with moderate speed. The 1.5 A peak current suits small to medium power MOSFETs. Consider thermal dissipation requirements based on capacitive load switching frequency. Verify input logic voltage compatibility with the 4.5 V minimum operating threshold before integration into the design.

Part Context

This part belongs to the MIC442x series of dual MOSFET drivers. The family includes variants like MIC4426 and MIC4428, which may differ in pinout or electrical characteristics. The BN suffix specifically denotes the plastic DIP package option, distinguishing it from surface-mount versions such as the ZM or ZN suffixes.

Replacement Considerations

The IRS4427SPBF from Infineon is a documented alternative. Verify pin-to-pin compatibility and ensure the replacement meets the required 1.5 A peak current and 18 V maximum supply voltage specifications.