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BQ25710: VBUS UVLO

Fred Cheng
Expert 5950 points
Part Number: BQ25710


Hi team,

what would happen if 5V VBUS drop below  VBUS_CONVENZ  for a short period of time?

this is not listed in the datasheet? 

please help elaborate, thanks

  • +1
    TI__Expert 4780 points

    Hi Fred,

    If VBUS drops below VBUS_CONVENZ, the converter operation will stop (no charging), REGN LDO will turn off, and CHRG_OK will go low. 

    When VBUS again goes above this threshhold, the device will behave as it does on power up from VBUS:

    1. 50 ms after VBUS above VVBUS_CONVEN, enable 6 V LDO and CHRG_OK goes HIGH
    2. Input voltage and current limit setup
    3. Battery CELL configuration
    4. 150 ms after VBUS above VVBUS_CONVEN, converter powers up.

    Thanks,

    Khalid