In the datasheet for the LP38853 there appears to be two conflicting statements:
- Under recommended operating conditions:
- "Vin cannot exceed either Vbias or 4.5V, whichever is lower"
- Under section 7.3.2:
- "There is no requirement for the order that Vin or Vbias are applied or removed."
It’s unclear if you can have Vin ramp before Vbias or not. Point 1 indicates Vin cannot be > Vbias (assuming Vbias < 4.5V), but Point 2 suggestions it doesn't matter the order in which Vin and Vbias are ramped, making Vin > Vbias ok during power on.
If, generally, both statements are true then under what conditions can Vin > Vbias?