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