1. Any of three kinds of fault trigger fault bit toggle to 1
OT: Temp>155℃
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OC:short to battery/supply or over-current condition.
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OL:open load when OUTPUT OFF
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2. base on truth table below, user can recognize the fault type
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Output OFF(0)
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Output ON(1)
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HS
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Open load/ short to BAT(OC)
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short to GND(OC)/OT
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LS
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Open load/ short to GND(OC)
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short to BAT(OC)/OT
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- Open load(OL) and Short circuit base on Vds><Vout(FLT-TH)
33879
33880
OL: Vds<VFLT-TH && Output OFF
Short to BAT: Vds > VFLT-TH && OC
Short to GND: Vds< VFLT-TH &&OC