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BQ25616: BQ25606 vs BQ25616. I don't found the difference.

Gustavo Belbruno
Prodigy 45 points
Part Number: BQ25616
Other Parts Discussed in Thread: BQ25606

First I want to apologize if this question seems silly. But I was analyzing the datasheets of both components and I don't find a substantial difference between both components.
I clearly understand that the BQ25616 is a higher version than the BQ25606, but I can't find the improvement.
If someone helps me I would be very grateful.

Gustavo

  • 0
    TI__Mastermind 24075 points

    Hi Gustavo,

       Below are some of the differences:

    • BQ25616 has optional external OVPFET control to provide an extra layer of protection against input voltage transients, and is controlled by ACDRV pin. This has a fast response of 130ns turn off time. Note this can be disabled if not needed as well.
    • BQ25616 employs HOT/COLD temperature charging profile, while BQ25606 uses JEITA. The BQ25616J is equivalent to BQ25616 but charges according to JEITA vs HOT/COLD
    • Both spins support 4.2V and 4.35V VBATREG, but BQ25616 also supports 4.1V VBATREG, while BQ25606 supports 4.4V VBATREG.
    • BQ25616 has improved lower battery only leakage/discharge current (<10uA) compared to ~57uA battery discharge/leakage current of the BQ25606.

  • 0 in reply to Kedar Manishankar
    Prodigy 45 points

    Thank you very much. 

    Now, seeing that you understand enough about charging, I take the opportunity to ask you: If my device is in an environment below 0ºC (therefore my battery also), will charging never start?

  • 0 in reply to Gustavo Belbruno
    TI__Mastermind 24075 points

    Hi Gustavo,

       That's correct if you are using the temperature charging profile, as a TS fault would be detected and charging would be suspended. The temperature of the battery is sensed on the TS pin as a voltage, with the use of an external thermistor, so the resultant resistor divider on TS will change the voltage depending on the resistance of the thermistor (changes with temp, use NTC). If you do not want to use the HOT/COLD or JEITA functionality, you can tie the TS pin to a fixed DC voltage that corresponds to the normal temp range. This will always let you charge and essentially ignore temperature, but you lose the HOT/COLD, JEITA functionality. Note that you will have to check with battery vendor if this is a safe charging environment for the battery you use.

  • 0 in reply to Kedar Manishankar
    TI__Expert 5590 points

    Hi Gustavo:

    On page 4 of BQ25616 datasheet, there is device comparison table, which compares BQ25606, BQ25616 and BQ25616J.

    Regards,

    Hong

  • 0 in reply to Kedar Manishankar
    Prodigy 45 points

    Thank you very much Kedar :)