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Li-Ion battery charger IC, 12Vdc to charge 3S battery

MI
Intellectual 560 points
Other Parts Discussed in Thread: BQ25713, LMR61428, BQ24133

Do TI have some solution :

Need to charge 3S Li-Ion battery i.e 12.6V , input is 12V/2A adapter. Need very low cost solution for it. 

  • 0
    TI__Guru*** 143870 points

    Hi MI,

    You need a boost charger since VBAT > VBUS.  For single IC solution, the only device we have is BQ25713, an I2C controlled buck boost charger requiring 4 external FETs.  Alternatively, for a 2 chip solution (boost converter + buck charger), I recommend LMR61428 (internal FETs) to boost the 12V to at least 13.5V and then BQ24133 for the 3S charger with integrated FETs.

    Regards,

    Jeff