The MC33879APEK is a configurable octal Serial Switch with open load detect current disable. The 33879 device is a 8-output hardware configurable, high side/low side switch with 16-bit serial input control using the serial peripheral interface (SPI). Two of the outputs may be controlled directly via a microcontroller for pulse-width modulation (PWM) applications. The 33879 incorporates SMARTMOS technology, with CMOS logic, bipolar/MOS analogue circuitry and DMOS power MOSFETs. The 33879 controls various inductive, incandescent or LED loads by directly interfacing with a microcontroller. The circuit's innovative monitoring and protection features include very low standby currents, cascade fault reporting, internal +45V clamp voltage for low side configuration, -20V high side configuration, output specific diagnostics and independent over-temperature protection.
Two of the outputs may be controlled directly via a MCU for pulse-width modulation applications
Incorporates SMARTMOS technology with CMOS logic/bipolar/MOS analogue circuitry & DMOS power MOSFETs
Controls various inductive, incandescent or LED loads by directly interfacing with a MCU
Outputs are current limited (0.6 to 1.2A) to drive incandescent lamps
On/off control of open load detect current (LED application)
Internal reverse battery protection on VPWR
Loss of ground or supply will not energize loads or damage IC
Short-circuit detect and current limit with automatic retry
