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Configurable Octal Serial Switch with Open Load Detect Current Disable

The 33879 device is an 8-output hardware-configurable, high-side/low-side switch with 16-bit serial input control. Two of the outputs may be controlled directly via microprocessor for PWM applications. The 33879 incorporates SMARTMOS technology, with CMOS logic, bipolar/MOS analog circuitry, and DMOS power MOSFETs. The 33879 controlsvarious inductive, incandescent, or LED loads by directly interfacing with a microcontroller.

Features

? Designed to Operate 5.5 V ? 16-Bit SPI for Control and Fault Reporting, 3.3 V/5.0 V Compatible

? Outputs Are Current Limited (0.5 A to 1.0 A) to Drive Incandescent Lamps

? Output Voltage Clamp, +45 V (Low Side) and -20 V (High Side) During Inductive Switching

? 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

? Maximum 5.0?A IPWRStandby Current at 13.0 V VPWR

? RDS(ON) of 1.0 ?at 25°C Typical

? Short Circuit Detect and Current Limit with Automatic Retry

? Independent Overtemperature Protection

? Motorola Now Offers Pb-Free Packaging with the Suffix EK