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BQ24773: Some problems with settings

GARETH OU
Guru 11365 points
Part Number: BQ24773

Hi 

Questions 1~3, please help confirm
1). Can IADP/IBAT/PMON use 1.8V ADC?
2). Can PROCHOT be controlled by 1.8V?
3). How is ILIM calculated? and VILIM divider

  • 0
    TI__Genius 11850 points

    Hi Gareth,

    1) The IADP, IBAT, and PMON output voltages are clamped below 3.3 V, so it is best if the ADC can read voltages up to 3.3 V. This way, the ADC can read the full range of possible IADP/IBAT/PMON voltages instead of maxing out at 1.8 V.

    2) Yes, it is fine to use a 1.8 V pull-up rail for /PROCHOT.

    3) Please take a look at the ILIM pin description below, which provides the formula. V(ILIM) is set by the resistor divider values.

    Best regards,

    Angelo