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Query reg BQ34Z100

Deepak Holla1
Prodigy 110 points

Hi TI,

As per data sheet it is mentioned "Upon detecting A/D value representing 2.5 V on VEN pin, Four-LED mode will display the RSOC by driving pins RC2(LED1), RC0(LED2), RA1(LED3),RA2(LED4) in a proportional manner where each LED represents 25% of the remaining state of charge. For example, if RSOC = 67%, three LEDs will be illuminated."

Should it be 75% instead of 67% if three LEDs are ON ?

Also please confirm the below:

One LED ON: 25% ROSC

Two LEDs ON: 50% ROSC

Three LEDs ON: 75% ROSC

Four LEDs ON: 100% ROSC (Full Battery Condition)

Please reply ASAP.

Regards,

Deepak Holla.

  • 0
    TI__Guru 73830 points

    Deepak,

    I would expect only two LEDs to be lit for a 67% SOC. They may have been thinking about a five LED setup when making that statement.

    Tom

  • 0 in reply to ThomasCosby
    Prodigy 110 points

    Hi Tom,

    I am afraid my question is still not answered.

    Consider the case of using the direct 4 LED case.

    Please confirm if the below is correct:

    One LED ON: 25% ROSC

    Two LEDs ON: 50% ROSC

    Three LEDs ON: 75% ROSC

    Four LEDs ON: 100% ROSC (Full Battery Condition)

    If not then please provide the percentage of remaining state of charge indicated by each LED in 4 LED case.

     

    Regards,

    Deepak.