MIC4423BWM TR

Overview

The MIC4423BWM TR is a dual low-side MOSFET gate driver manufactured by Microchip Technology. It features two independent inverting drivers capable of sourcing and sinking 3 A peak output current. The device operates with a supply voltage range of 4.5 V to 18 V and accepts CMOS or TTL logic inputs. Packaged in a 16-lead SOIC, it supports high-speed switching with rise and fall times of 12 ns. The component is designed for through-hole mounting and functions within an operating temperature range of -40°C to +125°C.

Feature Summary

• Dual-channel architecture providing independent control for two low-side MOSFETs
• High peak output current capability of 3 A for rapid switching
• Inverting logic configuration compatible with standard CMOS and TTL interfaces

Applications

• Power conversion circuits requiring efficient MOSFET switching
• Motor drive systems utilizing low-side transistor arrangements
• DC-DC converter topologies needing isolated or buffered gate signals

Procurement Notes

Verify the specific suffix 'TR' indicates tape and reel packaging when ordering. Confirm the 'B' grade designation aligns with required industrial temperature specifications. Ensure the 16-lead SOIC footprint matches the target PCB layout. Cross-reference the datasheet for exact pinout definitions to prevent installation errors during assembly.

Selection Notes

Select this component for applications requiring robust low-side driving without high-side complexity. The dual configuration reduces board space compared to single drivers. Verify input voltage levels match the system logic family. Consider thermal dissipation requirements given the 730 mW power dissipation rating under load conditions.

Part Context

This part belongs to the MIC4423/MIC4424/MIC4425 family of dual 3A MOSFET drivers. These devices are pin-compatible with earlier generations like the MIC423 series but offer improved performance and reliability. The family is designed for demanding electrical environments where latch-up immunity and high output current are critical for stable operation.

Replacement Considerations

MIC4423CPA offers identical functionality in a PDIP package. TC4423VPA provides similar dual low-side driving capabilities in a PDIP format. For surface mount alternatives, consider TC4423AVMF which maintains the same electrical characteristics in a DFN package.