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BQ25172: About the resistance value of TMR pins

Ryu Yamashita
Genius 4325 points

Part Number: BQ25172

Tool/software:

Hi team,

Are the resistors connected to the TMR pin limited to those listed in Table 7-1?
For example, is it not possible to set the charging time to 5 hours?

Best Regards,
Ryu.

  • +1
    TI__Guru* 77326 points

    Hi Ryu

    Ryu Yamashita said:
    Are the resistors connected to the TMR pin limited to those listed in Table 7-1?

    Yes, only use values in Table.

    Ryu Yamashita said:
    For example, is it not possible to set the charging time to 5 hours?

    No, not possible.  The TMR and VSET pins are digital input, a bin type system.  At start up a current is applied to the pin and voltage is measured, the voltage corresponds to one of the 12 possible bins or setting.  

    Note that ISET is an analog input and can be changed at any time.