MIC4427BMM

Overview

The MIC4427BMM is a dual low-side MOSFET gate driver manufactured by Microchip Technology. It features two independent non-inverting outputs capable of sourcing and sinking 1.5 A peak current. The device operates within a supply voltage range of 4.5 V to 18 V. It utilizes CMOS/TTL compatible logic inputs and provides fast switching with typical rise and fall times of 20 ns and 29 ns, respectively. Maximum delay times are specified at 40 ns. The component is housed in an 8-pin SOIC package (3.90 mm width) and supports surface-mount installation.

Feature Summary

• Dual-channel architecture providing independent control for two low-side MOSFETs
• High peak output current capability of 1.5 A for rapid switching
• CMOS and TTL logic input compatibility for direct interface with digital controllers
• Non-inverting configuration simplifies circuit design

Applications

• Low-side switching in DC-DC converter topologies
• Motor control systems requiring dual MOSFET drive
• Power supply circuits utilizing synchronous rectification
• Industrial automation power stages

Procurement Notes

Verify the specific suffix 'BMM' against the manufacturer's official datasheet to confirm the exact temperature grade and packaging format. Ensure the procurement source provides valid RoHS compliance documentation. Confirm that the supplier offers moisture-sensitive device handling procedures appropriate for the SOIC-8 tube packaging. Cross-reference the part number with the latest Microchip Technology release notes to ensure no obsolescence or pinout changes have occurred.

Selection Notes

Select this component when a dual low-side driver with 1.5 A peak current is required for cost-sensitive applications. The MIC4427BMM is suitable for designs needing CMOS/TTL input compatibility without level shifting. Consider the 4.5 V minimum supply voltage constraint during power rail selection. The SOIC-8 package is ideal for space-constrained PCB layouts where dual channel isolation is necessary but high-side driving is not required.

Part Context

The MIC4427 series belongs to Microchip Technology's portfolio of MOSFET gate drivers, originally developed under the Micrel Semiconductor brand. This family focuses on providing robust, low-cost solutions for driving power MOSFETs in various power conversion applications. The MIC4427BMM specifically represents the commercial/industrial grade variant within the broader MIC4427 lineup, sharing functional similarities with other members like the MIC4427YM while differing in temperature specifications.

Replacement Considerations

Publicly confirmed substitute part numbers for the MIC4427BMM were not identified in the provided reference data. Designers should consult the manufacturer's official cross-reference tools or contact technical support directly for verified equivalent components.