The MC33291 is an eight output low side power switch with 8 bit serial input control. The MC33291 is a versatile circuit designed for automotive applications, but is well suited for other environments. The MC33291 incorporates SMARTMOS technology, with CMOS logic, bipolar/MOS analog circuitry, and DMOS power MOSFETs. The MC33291 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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1.0 A Peak Current Outputs with Maximum RDS(on) of 1.2 Ohm at Tj = 150 deg C
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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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Maximum Sleep Current (I PWR ) of 25 mA with Reset Low
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Maximum of 4.0 mA I DD During Operation
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Maximum of 2.0 mA I PWR During Operation with All Outputs ON
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Open Load Detection (Outputs OFF)
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Overvoltage Detection and Shutdown