FAN3229CMX

Gate Driver Overview

The FAN3229CMX is a dual low-side MOSFET gate driver manufactured by onsemi, housed in an 8-SOIC surface-mount package. It provides independent high-current outputs of 3A peak sink and source capability to drive external N-channel power MOSFETs efficiently. The device operates within a supply voltage range of 4.5V to 18V and supports both inverting and non-inverting input configurations. Typical switching performance includes a rise time of 12ns and a fall time of 9ns. It functions reliably across an extended temperature range from -40°C to +125°C, with a quiescent operating current of 750µA and maximum power dissipation of 460mW.

Gate Driver Feature Summary

• Dual independent low-side channel configuration for driving two separate N-channel MOSFETs
• High peak output current capability of 3A for both sourcing and sinking operations
• Supports flexible logic interface with selectable inverting and non-inverting input polarities

Gate Driver Applications

• Full-bridge motor control circuits
• Synchronous rectification stages in DC-DC converters
• Low-side switching applications in industrial power management systems

Gate Driver Procurement Notes

Verify component status prior to integration as the FAN3229CMX has been officially declared obsolete by onsemi. Production end-of-life notifications indicate that manufacturing will cease, requiring immediate assessment for design sustainability. Ensure final procurement batches are sourced from authorized distributors to confirm authenticity and traceability before committing to long-term production runs.

Gate Driver Selection Notes

Select this component when a dual low-side driver with 3A output capability is required for synchronous rectification or bridge topologies. The 8-SOIC package suits space-constrained PCB layouts where thermal performance must be managed within specified power dissipation limits. Consider the specific input polarity requirements for the control logic interface to ensure compatibility with existing microcontroller or PWM signals without additional inversion circuitry.

Gate Driver Part Context

The FAN3229CMX belongs to the FAN3229T series of specialized power management integrated circuits designed for efficient gate driving applications. It complements other variants such as the TMX (SOIC) and CMPX (MLP) packages within the same functional family. These devices address the need for robust, high-speed switching drivers in modern power electronics, offering a balance between performance and integration density for standalone low-side control tasks.

Gate Driver Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.