MC35XS3400DHFKR2

Overview

The MC35XS3400DHFKR2 is a high-side power distribution switch manufactured by NXP USA Inc. It features four independent channels with an integrated 16-bit SPI interface for programming, control, and diagnostics. The device utilizes quad 35 mOhm MOSFETs capable of controlling separate loads such as 28 W bulbs or LEDs. Key electrical parameters include a supply voltage range of 6 V to 20 V, a logic supply of 3 V to 5.5 V, and a maximum output current of 6 A per channel. It operates within a temperature range of -40°C to 150°C TJ and is housed in a 24-PowerQFN package.

Feature Summary

• Integrated 16-bit serial peripheral interface (SPI) enables precise programming of fault current trip levels and lamp inrush duration.
• Built-in protection mechanisms include overcurrent, overvoltage, thermal shutdown, undervoltage lockout, and open load detection.
• Configurable slew rate and selectable pulse-width modulation (PWM) control improve output performance and reduce electromagnetic interference.

Applications

• Low-voltage automotive lighting systems
• Control of incandescent bulbs and LED arrays
• Peripheral driver circuits requiring high-side switching

Procurement Notes

Verify the exact suffix DHFKR2 against official NXP documentation to confirm package type and tape-and-reel specifications. Confirm availability status as related variants are marked discontinued. Ensure compatibility with system voltage requirements and SPI communication protocols before integration.

Selection Notes

Select this component for applications requiring independent control of multiple high-side loads via digital interface. Consider the 35 mOhm on-resistance for efficiency and the robust protection suite for automotive reliability. Verify that the 24-PowerQFN package fits the design constraints and thermal management strategy.

Part Context

This part belongs to the 35XS3400 family designed for low-voltage automotive lighting. It integrates four low Rds(on) MOSFETs controlled by a central SPI interface. The family supports flexible configuration for various lighting topologies, including parallel inputs or individual SPI control for PWM dimming.

FAQ

How is the fault current trip level configured?

The fault current trip levels are programmable via the 16-bit SPI interface, allowing customization based on specific load requirements.

What protection features are included?

The device includes transient protection, overcurrent, overvoltage, thermal shutdown, undervoltage lockout, and open load detection capabilities.