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BQ25600D: Vsys tolerance of BQ25600D

takahiko yokota
Mastermind 7135 points
Part Number: BQ25600D

Hi

Please let me ask the question about BQ25600D.
Are there the Vsys tolerance data at the following two conditions.

1.Supplement mode
2.Charging under SDP / 500mA

Best regards,
Yokota
  • 0
    TI__Expert 5590 points

    Hi Yokota:

    1. In supplement mode, the system voltage VSYS is the battery voltage minus the voltage drop on BAT FET. BATFET voltage drop is equal to IBAT*Rdson of BATFET, IBAT is battery discharge current.

    2. When charging under SDP, if VBAT is higher than VSYSMIN, then the VSYS is equal to VBAT + IBAT*Rdson, IBAT is battery charge current. If VBAT is lower than VSYSMIN - 180mV, then VSYS is equal to VSYSMIN (3.68V typ).

    Regards,

    Hong Mao