MC33879BPEK

Overview

The MC33879BPEK is an eight-output hardware-configurable high-side/low-side switch featuring a 16-bit serial peripheral interface (SPI) for control and fault reporting. It incorporates SmartMOS technology with CMOS logic, bipolar/MOS analog circuitry, and DMOS power MOSFETs. The device supports supply voltages from 5.5 V to 27.5 V and operates with 3.3 V or 5.0 V compatible logic inputs. Two outputs allow direct microprocessor control for PWM applications. It includes internal reverse battery protection, short-circuit detection with automatic retry, independent overtemperature protection, and open load detect current disable capabilities.

Feature Summary

• Hardware-configurable eight-output architecture supporting high-side and low-side switching configurations
• Integrated SmartMOS technology combining CMOS logic, bipolar/MOS analog circuits, and DMOS power MOSFETs
• Comprehensive protection suite including short-circuit detection with automatic retry, independent overtemperature protection, and loss of ground/supply safety

Applications

• Programmable Logic Controller (PLC) and Remote I/O systems
• Motorcycle Engine Control Unit (ECU) and Small Engine Control
• Automotive transmission and gearbox control modules

Procurement Notes

Verify the specific suffix 'BPEK' against official NXP documentation to confirm package type and tape/reel specifications. Confirm RoHS compliance status and longevity program participation directly with the manufacturer or authorized distributors. Ensure the component matches the required operating temperature range and voltage specifications for your design before procurement.

Selection Notes

Select this component when designing systems requiring multiple independently controllable loads driven by a microcontroller via SPI. It is suitable for applications needing hardware-configurable high-side or low-side switching with integrated fault protection. Consider its SmartMOS technology for efficient driving of inductive, incandescent, or LED loads while minimizing external component count.

Part Context

The MC33879 series belongs to NXP's portfolio of configurable serial switches designed for automotive and industrial environments. These devices are engineered to interface directly with microcontrollers, providing robust control over various loads. The series supports diverse applications ranging from engine management to general-purpose I/O expansion in distributed control systems.

Replacement Considerations

Consult official NXP substitution guides for form-fit-function compatible alternatives. Verify that any replacement maintains the 16-bit SPI interface, output current capabilities, and protection features required by the original design.