MC33879TEK Datasheet PDF - Freescale

●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 using the serial peripheral interface (SPI). Two ofthe outputs may be controlled directly via a microcontroller for pulse-width modulation (PWM) applications. The 33879 incorporates SMARTMOS technology, with CMOS logic, bipolar/MOS analog circuitry, and DMOS power MOSFETs.

●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 (0.6 A to 1.2 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 μA IPWRstandby current at 13 V VPWR

●• RDS(ON) of 0.75 Ωat 25 °C typical

●• Short-circuit detect and current limit with automatic retry

●• Independent over-temperature protection