The MC33291L is an eight output low side power switch with 8 bit serial input control. The MC33291L is a versatile circuit designed for automotive applications, but is well suited for other environments. The MC33291L incorporates SMARTMOS technology, with CMOS logic, bipolar/MOS analog circuitry, and DMOS power MOSFETs. The MC33291L interfaces directly with a microcontroller to control various inductive or incandescent loads.
Features
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Designed to Operate Over Wide Supply Voltages of 5.5 to 26.5 V
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Interfaces Directly with Microprocessor Using 8 Bit SPI I/O Protocol to 3.0 MHz
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Outputs Current Limited to 1.0 to 3.0 A for Switching Incandescent Loads
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Output Voltages Clamped to 53 V During Inductive Switching
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Open Load Detection (Outputs OFF)
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Overvoltage Detection and Shutdown
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Outputs have Independent Over Temperature Detection and Shutdown
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Output Mode Programmable for Sustained Current Limit or Shutdown