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  • RE: BQ25121: Switching from Trickle Charge to Normal Charge mode

    Maarten, I would recommend that you move to the BQ25121A which is the new version of the BQ25121. We are planning to release in May and we have samples I could provide you. The IC will switch from precharge to fast charge at 150mV above the 3V setting…
    • Answered

  • RE: BQ25121: I2C works only if "IN" pin is used but not with BATTERY pin

    Resolved
    Hueseyin, I am sorry you are having trouble. Unfortunately, our BQ25121 support team is out until early next week for the US holiday. Hopefully, you wait until then.

  • BQ25121: Is the DSBGA package light sensitive?

    TI Thinks Resolved
    Part Number: BQ25121 Is the BQ25121 DSBGA package light sensitive? I am assuming it is because it is a chip scale package, but it would be great to have a definitive answer...

  • BQ25120A: Excess quiescent current draw when replacing the BQ25121 with BQ25120A

    TI Thinks Resolved
    Part Number: BQ25120A Other Parts Discussed in Thread: BQ25121 , , BQ25121A Hi. Due to issues with the BQ25121 I have replaced it with the BQ25120A and that causes a 0.5mA quiescent current draw. Register settings were kept the same on both, since the…

  • BQ25121: + BQ51013BRHL high Iq when low qi charging flied occurs

    Part Number: BQ25121 Other Parts Discussed in Thread: , BQ25120A Hi, I have the BQ51013BRHL tied to the BQ25121 to charge the battery of the device I'm working on. I found that there is an issue that when the board is slowly removed from the qi charging…

  • Bq25121 sample code

    TI Thinks Resolved
    Other Parts Discussed in Thread: BQ25121 , BQ25120 Dear TI expert； Do you have the BQ25121 sample code which can use I2C to control the the BQ25121 charging process? Thank you very much.
    • Answered

  • BQ25121: Shipmode function is not working in fault status

    Resolved
    Part Number: BQ25121 Hi， I have a question. When Vin is below 4.5V, status become fault.In these cases, Shipmode setting is not working. Only after Vin is upper 4.8V and charging, shipmode is working. This happens when we put our wearable device into…
    • Resolved
    • Answered

  • RE: BQ25121: Device won't enter ship mode if battery voltage is above 4V

    Resolved
    Anthony, Could you share a plot on this one? If my memory serves right, there was a vulnerability I found on the BQ25121 in not being able to enter Ship Mode when we used a wireless charger VIN (noisy) unplugged. We have fixed that on the BQ25121A…

  • Question about BQ25121 SW pin

    Hi~ One of my customer had removed "Inductor_L3 below schematic" at SW pin(A4) and found charger locked down(couldn't communicate with MCU). They want to know that inductor caused this issue and any method to recover except inserting inductor.(actually…

  • BQ25121 Reset and OTP

    Other Parts Discussed in Thread: BQ25121 Hi, We were designing a wearable with BQ25121. The device outputs 2.5V at startup and is then programmed to 3.0V on the run. In case we reset the device with MR#, or the device gets down when the battery is…

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