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BQ25505: BQ25505 issues

Part Number: BQ25505

1. If Vin connect power supply DC 3.3v, and set VOC_SAMP = 80% configures, just a testing, will damage to IC BQ25505?

2.I find Current in Vin_DC pin is more bigger than VBAT_SET(this pin is connet to Li-cell), but load circuit is little current, so why?

3.Could someone share me BQ25505 charging Li-cell process Figure

4. My PCB as followed, help check.