MC33879APEK574

MC33879APEK574 configurable 8-output serial switch 

The MC33879APEK574 from NXP Semiconductors is a highly configurable 8-output serial switch engineered for both high-side and low-side configurations, offering exceptional design flexibility. Built on SMARTMOS technology, this chip integrates CMOS logic, bipolar analog circuitry, and DMOS power MOSFETs to drive inductive, incandescent, or LED loads directly from a microcontroller . It features a 16-bit Serial Peripheral Interface (SPI) for control and fault reporting, with two outputs capable of direct PWM control. Housed in a 32-pin SOIC wide package with an exposed pad, the device supports a wide power supply range of 5.5 V to 27.5 V and operates reliably from -40°C to +125°C.

Applications

This switch is specifically designed for automotive body electronics, including solenoid drivers, relay controls, actuators, and stepper and brush DC motors . The open-load detection disable feature makes it particularly well-suited for LED lighting control in both automotive and industrial systems, where minimizing leakage current is essential . It is also widely used in industrial automation systems, HVAC controls, power distribution modules, and fuel pump control in modern vehicles.

Alternative octal serial switch models

For broader sourcing or design options, consider the MC33879APEKR2, a functionally equivalent octal configurable switch with identical electrical specifications in tape-and-reel packaging for automated assembly. The MC33879TEK, a similar device offering the same octal configurable switching capabilities with comparable protection features. The ISO1H811GAUMA1 from Infineon Technologies, an 8-channel high-side power switch offering 0.7A output capability in a 36-pin SOP package. And the MC33880DWB, an 8-output high-side/low-side switch with SPI and integrated PWM control for comparable automotive applications.