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BQ25672: question about unused pins

Austin Do
Expert 3335 points
Part Number: BQ25672

Hello team,

My customer is asking about how to terminate unused pins.

Do you advise below unused pins?

Pin 6 : D+

Pin 7 : D-

Pin 12 : QON

Pin 16 : TS

Pin 24 : SDRV

Pin 25 : SYS

Best Regards,

Austin

  • 0
    TI__Guru**** 167146 points

    Hi Austin,

    Please float D+, D-, QON.  SDRV needs 1000pF capacitor to GND.  SYS still needs its minimum capacitance after derating for applied voltage.  If TS is floating, the charger reports a TS fault and prevents charge until the host processor sets IGNORE_TS bit =1.  Or you can hardware disable the TS feature but using a 10k/10k resistor divider from REGN to TS to GND.

    Regards,

    Jeff