MCZ33879AEK

The MC33879AEK from NXP Semiconductors is an 8-output, hardware-configurable, high-side/low-side switch designed for driving various inductive, incandescent, or LED loads. It utilizes SMARTMOS technology, integrating CMOS logic, bipolar/MOS analog circuitry, and DMOS power MOSFETs.

This device operates with a supply voltage range of 5.5 V to 27.5 V and features a 16-bit SPI interface compatible with 3.3 V and 5.0 V logic levels for control and fault reporting. The outputs are current-limited between 0.6 A and 1.2 A, suitable for driving incandescent lamps. Protection features include internal +45 V clamp voltage for low-side configuration and –20 V for high-side configuration during inductive switching, output specific diagnostics, independent overtemperature protection, short-circuit detect with automatic retry, and reverse battery protection.

The MC33879AEK is available in a 32-SOIC-EP package and is surface-mountable. It offers low standby currents, with a maximum of 5.0 µA IPWR at 13 V VPWR. The typical RDS(ON) is 0.75 Ω at 25 °C.

Key monitoring and protection features include cascade fault reporting, loss of ground or supply protection, and on/off control of open load detect current, making it suitable for LED applications.