The MC33397 is a versatile dual mode low-side switch that can be output-configured as two 0.3 Ohm open drain outputs in the dual mode or as six 0.9 Ohm open drain outputs in the hex mode (RDS(on) @ 25 C). Each open drain output has internal current limit and short circuit protection. Current limit is typically 1.5 Amps with 2.0 Amps maximum. The outputs can be input controlled via parallel inputs or the Serial Peripheral Interface (SPI). Three inputs provide parallel control while a serial 8-bit word provides SPI control of the outputs. Output fault detection capability includes "Off-State" open loads and "On-State" shorts-to- battery conditions. Individual output faults are latched into the fault register and serially shifted out during serial communication to the MC33397.The MC33397 has both over voltage and under voltage shutdown. A low quiescent current sleep state feature can be enabled (or disabled) on command via the SPI port.
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