MIC4424BN

Overview

The MIC4424BN is a dual low-side MOSFET gate driver manufactured by Microchip Technology, housed in an 8-pin PDIP package with a .300-inch body width. It delivers a peak output current of 3 A and operates within a supply voltage range of 4.5 V to 18 V. The device features non-inverting logic inputs compatible with TTL levels and provides matched rise and fall times for precise switching control. Typical propagation delays are under 40 ns, with rise and fall times around 28 ns and 32 ns respectively. It functions reliably within an operating temperature range of 0°C to +70°C and includes latch-up protection against reverse current injection.

Feature Summary

• Dual-channel architecture providing independent high-current drive for two low-side power switches
• TTL-compatible logic inputs that remain functional across the entire wide supply voltage range
• Robust latch-up protection capable of withstanding significant reverse current on outputs
• Rail-to-rail output voltage swing ensuring efficient power MOSFET switching

Applications

• Driving power MOSFETs in DC-DC converter topologies
• Gate driving in motor control applications requiring fast switching
• High-speed clock line buffering and signal restoration
• Driving piezoelectric transducers or coaxial cables

Procurement Notes

Verify the specific suffix 'BN' against the official Microchip datasheet to confirm the exact temperature grade and package variant. Ensure the ordering part number matches the required industrial or commercial temperature range. Confirm RoHS compliance status and moisture sensitivity level prior to procurement to align with assembly process requirements.

Selection Notes

Select this component when dual low-side driving with 3 A peak current capability is required. It is suitable for designs needing TTL input compatibility without level shifting. Consider the PDIP package for through-hole prototyping or manufacturing. Evaluate thermal dissipation limits if driving large capacitive loads continuously.

Part Context

The MIC4424 belongs to the MIC4423/4424/4425 family of BiCMOS/DMOS drivers. These devices offer higher output current than the earlier MIC4426/4427/4428 series while maintaining pin compatibility. The family is designed for demanding electrical environments, offering improved reliability and noise immunity compared to standard CMOS drivers.

Replacement Considerations

Pin-compatible alternatives include the TC4424 and MIC4423 (inverting) or MIC4425 (differential). Verify that substitute parts meet the same 3 A peak current and 4.5V-18V operating voltage specifications.