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fast charge & slow charge in BQ24133

sarat kmr
Prodigy 80 points
Other Parts Discussed in Thread: BQ24133

Dear Rachel ,

i want to know what is fast charge and slow charge specifications in BQ24133 . what are the factors to be taken in to consideration . Please kindly send answer to my query .

Thanks & Regards ,

sarat

  • 0
    TI__Expert 3160 points

    Sarat,

    The Precharge/Fast Charge phases are shown in Fig 17 (datasheet pg 16)

    The fast charge current (datasheet pg 3) is set using the ISET pin. Pre-charge is always 1/10th of the fast charge current. 

    BAT LOWV threshold which is the battery voltage level that separates the precharge and fast charge phases is depended on the CELL pin configuration. The respective VLOWV levels are found in the datasheet on pg 8:

     

     

    Best Regards,

    Rachel