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BQ24770: maximum duty cycle

Sam Ting
Expert 3600 points
Part Number: BQ24770

Hi team,

What is the maximum duty cycle of bq24770 for 4-cell battery (4.2V/cell) application?
How much minimum input voltage is required for proper operation? Thanks!

Best regards,
Sam Ting

  • 0
    TI__Mastermind 25800 points

    Hey Sam,

    For the converter to operate properly, the VCC voltage must be higher than the VBAT voltage by the EC table parameter V(VCC-BAT_RISE). 

    You can also refer to section 8.3.2 Adapter Detect and ACOK Output in the datasheet as the ACOK requirements match the input voltage requirements related to VCC.

    Regards,

    Joel H