MC33879TEK

Full Half-Bridge (H Bridge) Drivers Overview

The MC33879TEK is an 8-output hardware-configurable high-side/low-side switch featuring 16-bit SPI control. It utilizes SMARTMOS technology with CMOS logic, bipolar/MOS analog circuitry, and DMOS power MOSFETs to drive inductive, incandescent, or LED loads. The device operates within a supply voltage range of 5.5 V to 27.5 V and supports 3.3 V/5.0 V compatible interfaces. Key electrical parameters include a typical on-resistance of 0.75 Ohms at 25°C, output current limits of 0.6 A to 1.2 A for incandescent lamps, and voltage clamps of +45 V (low side) and -20 V (high side). Standby current is 5.0 µA max at 13.0 V VPWR.

Full Half-Bridge (H Bridge) Drivers Feature Summary

• Hardware-configurable eight-channel switching architecture supporting both high-side and low-side configurations
• Integrated SMARTMOS technology combining CMOS logic, bipolar/MOS analog circuitry, and DMOS power MOSFETs
• Direct microprocessor interface via 16-bit serial peripheral interface for control and fault reporting
• Built-in protection mechanisms including short-circuit detection with automatic retry, independent overtemperature protection, and reverse battery protection

Full Half-Bridge (H Bridge) Drivers Applications

• Automotive engine management systems
• Valve driver circuits
• Inductive load control applications
• Incandescent lamp driving
• LED load control with open load detect current disable

Full Half-Bridge (H Bridge) Drivers Procurement Notes

Verify the specific suffix 'TEK' against official NXP documentation to confirm package type and lead-free status. Ensure compatibility with existing PCB footprints for the 32-SOIC-EP package. Confirm that the 16-bit SPI interface matches the host microcontroller's capabilities. Check for any obsolescence notices or lifecycle changes associated with this specific variant before finalizing procurement plans.

Full Half-Bridge (H Bridge) Drivers Selection Notes

Select this component when an application requires multiple independently controllable switches with integrated protection features. It is suitable for designs needing direct SPI control without external gate drivers. Consider the thermal performance given the 0.75 Ohm typical on-resistance. Verify that the 5.5 V to 27.5 V operating range aligns with the system's power supply specifications. Evaluate the need for PWM capability on two outputs if motor or dimming control is required.

Full Half-Bridge (H Bridge) Drivers Part Context

The MC33879 belongs to NXP's family of configurable serial switches designed for automotive and industrial environments. It replaces discrete switching solutions by integrating control logic and power stages into a single IC. The device is part of the broader MC338xx series, which includes various low-side and high-side switch options tailored for different channel counts and interface requirements.

Full Half-Bridge (H Bridge) Drivers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.