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BQ4050: BQ4050 LED 5 blinking at the end of charge

Star Xu
Genius 9645 points
Part Number: BQ4050

Hi 

The customer test with BQ4050EVM-561, When fully charged, LED1-LED4 are always on, but LED5 is still flashing.

When fully charged, the flags of [VCT], [FC], [TC], and [TAPER] are all = 1, but the current still have 17mA.

Attached the gg file.

03-17.gg.csv

Please help check it, and give some suggestions.

Thanks

Star

  • 0
    TI__Guru** 105590 points

    Hello Star,

    As long as the conditions are met for the gauge to be in charge mode the LED will continue to flash as mentioned in the TRM when LEDCHG is set. Charge mode is determined by your Chg Current Threshold and Quit Current.

    Sincerely,

    Wyatt Keller