MIC4429BM-TR

Overview

The MIC4429BM-TR is a low-side MOSFET gate driver manufactured by Microchip Technology, housed in an 8-SOIC package with a tape-and-reel configuration. It features a single-channel inverting output capable of delivering a peak current of 6A for both sourcing and sinking operations. The device operates within a supply voltage range of 4.5V to 18V and supports logic input thresholds of 0.8V (VIL) and 2.4V (VIH). Typical switching performance includes rise and fall times of 12ns and 13ns respectively. It is designed for operation across a junction temperature range of -40°C to 150°C.

Feature Summary

• Provides high peak drive current capability suitable for rapid power MOSFET switching
• Features robust BiCMOS/DMOS construction that prevents latch-up under specified conditions
• Includes protection against ground pin noise spikes up to 5V in either polarity
• Supports reverse current injection into outputs without damage or logic upset

Applications

• Driving power MOSFETs in DC-DC converter topologies
• Gate driving for capacitive, resistive, or inductive loads requiring fast switching
• Industrial motor control systems utilizing low-side switching configurations

Procurement Notes

Verify the specific suffix 'BM' against official documentation to confirm the operating temperature range and package variant, as distributor listings may vary between commercial and industrial grades. Ensure the 'TR' designation matches the required reel quantity for your assembly process. Cross-reference the manufacturer part number with the latest datasheet revision to validate electrical parameters and RoHS compliance status before finalizing procurement.

Selection Notes

Select this component when a single-channel low-side driver with high peak current is required for demanding electrical environments. The wide operating temperature range and noise immunity make it suitable for industrial applications. Compare against the MIC4427 series if non-inverting logic or lower current requirements are acceptable, or consider the MIC4424 family for dual-channel configurations with similar drive capabilities.

Part Context

The MIC4429 belongs to the MIC442x family of highly reliable BiCMOS/DMOS buffer drivers. This family represents an evolution from earlier CMOS and bipolar drivers, offering improved flexibility and forgiveness during operation. These devices are primarily intended for driving power MOSFETs but are also suitable for other loads requiring low-impedance, high peak currents and fast switching times.

Replacement Considerations

The MIC4429YMM-TR serves as a direct pin-compatible alternative in an MSOP package. For dual-channel requirements, the MIC4424 series offers similar performance characteristics. Verify that any substitute maintains the required 6A peak current and inverting logic configuration.