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BQ24079: min power input

Victor Levy
Intellectual 2406 points
Part Number: BQ24079

Hi, 

I have a customer who is asking

What is the min power input of BQ24079 4.1V to charge at 300mA , at -20c to +70c

  • 0
    TI__Genius 12485 points

    Hi Victor,

    For the minimum voltage to be able to charge the 4.1V battery, you will need to maintain VIN to be higher of VINDPM and VOUT be higher than VDPPM voltage. 

    For the VOUT voltage, you can calculate using VOUT = VIN- ((RDSON of Q1) * IOUT) where IOUT is charge current + system load. Do you know what the system load is?

    Regards,

    Gautham