MC35XS3400CHFKR2

Overview

The MC35XS3400CHFKR2 is a quad high-side power switch IC designed for automotive lighting applications. It integrates four N-channel MOSFETs with a typical on-resistance of 35 milliohms, capable of controlling loads up to 28 watts each. The device operates within a supply voltage range of 6 volts to 20 volts and features a 16-bit SPI interface for programming, control, and diagnostics. Key electrical parameters include a maximum load current of 6 amperes per channel and an operating junction temperature range from -40°C to 150°C.

Feature Summary

• Integrates four low Rds(on) MOSFETs for independent high-side switching
• Utilizes a 16-bit serial peripheral interface for configuration and status monitoring
• Provides programmable fault current trip levels and inrush duration settings
• Includes selectable slew-rate control to minimize electromagnetic interference

Applications

• Automotive exterior lighting systems
• Interior vehicle illumination circuits
• LED headlamp modules
• High-power bulb distribution networks

Procurement Notes

Verify the specific suffix CHFKR2 against official NXP documentation to confirm package type and tape-and-reel specifications. Confirm end-of-life status and availability through authorized distributors, as this component may be discontinued or subject to long-lead times. Ensure compatibility with existing PCB footprints and thermal management requirements before finalizing procurement decisions.

Selection Notes

Select this component when designing automotive lighting architectures requiring precise digital control via SPI. It is suitable for applications needing individual channel diagnostics and protection against overcurrent, overvoltage, and thermal faults. Consider the 35-milliohm on-resistance for efficiency calculations and ensure the system supports the required 6-volt to 20-volt operating range.

Part Context

This part belongs to the 35XS family of power switches developed by NXP Semiconductors, formerly Freescale Semiconductor. The family is optimized for low-voltage automotive environments, offering robust protection features and flexible control interfaces. The MC35XS3400 variant specifically targets quad-channel applications with moderate current capabilities.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify cross-reference data directly with NXP technical support or updated distributor catalogs for equivalent quad high-side switches.