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  • BQ25121A: Using BQ25121A with minimal parts/layout without via-in-pads

    TI Thinks Resolved
    Part Number: BQ25121A Other Parts Discussed in Thread: BQ51013B , BQ25120 Tool/software: Since my attempt to build BLE beacon with wireless charging (nRF52833 + BQ51013B + BQ25101Y) have ended with kind of fiasco (on nRF52833 side as i couldn't get it…

  • BQ25121A: new version of battery management ic and wireless power receiver

    TI Thinks Resolved
    Part Number: BQ25121A Other Parts Discussed in Thread: BQ25155 , BQ25120A , BQ51013B , BQ51003 I'd be glad to help you with the provided thread: Hi, My application involves receiving wireless power through Qi compatibility and charging the battery using…
    • Answered

  • BQ25121A: BQ2512x Evaluation Board - J25 Jumper Function

    Resolved
    Part Number: BQ25121A Hi there, I'm a bit confused about the J25 jumper on the BQ2512x evaluation board. It seems to offer PMID-VINLS or SYS-VINLS configurations. While PMID-VINLS, I understand PMID acts as a power input when VIN is valid and the…
    • Resolved
    • Answered

  • BQ25121A: Device not entering into ship mode

    Resolved
    Part Number: BQ25121A Other Parts Discussed in Thread: BQ25121 , BQ25123 , BQ25120F3A We are experiencing strange behaviour regarding ship mode on BQ25121AYFPT. When we plug the battery into the system, it starts in ship mode after this when /MR presses…
    • Resolved

  • BQ25121A: SYS @1.4V

    TI Thinks Resolved
    Part Number: BQ25121A Other Parts Discussed in Thread: BQ25121 Hi there My current design contains a BQ25121A for battery management. After being attached to a power supply (USB) for approx. 12hrs, the BQ25121A has only 1.4V at VSYS. I could not find any…
    • Answered

  • BQ25121A: Operation without PWM possible?

    Resolved
    Part Number: BQ25121A Hi, I wonder whether the BQ25121A and my circuit can be operated from the LDO output only. I want to avoid the extra parts for PWM since I have very little space on my PCB and loads of 10 mA max. However, I am not sure if I get the…
    • Resolved
    • Answered

  • BQ25121A: Help asked for finding a development board

    Resolved
    Part Number: BQ25121A Other Parts Discussed in Thread: BQ25120A , BQ25120 Hi, I tried to find a devboard for the BQ25121A but so far was unsuccessful. Isn't there any on offer? What do you recommend to do HIL testing? Best regards, Peter
    • Resolved

  • BQ25121A: BQ25121A In the sleep mode powered by the battery, when awakened by MR , the chip cannot output the set 3.0V only output the default 2.5V

    Part Number: BQ25121A Hi The customer design with bq25121A. ①Only connect the battery, turn on normally (SYS outputs 3.0V—MCU configures it through I2C at the beginning of boot); ②MCU pulls up the CD pin (MR pin can be regarded as floating at this…

  • BQ25121A: Functionality issues with the battery charger. Battery not charging via Charging IC

    TI Thinks Resolved
    Part Number: BQ25121A Hi, We are using BQ25121AYFPT battery charger management IC. Our non-programmed Charging IC output is 2.5V and the programmed output is 3.3V We are facing issues of many kinds on our boards. To list down a few: First Case: The…

  • BQ25121A: Vsys Regulation

    TI Thinks Resolved
    Part Number: BQ25121A Hi Team, would like to use the BQ25121A with a battery and wanna know if the Vsys will be able to regulate at 3.3V even if the battery is at 3V for example. Thank you. -Mark

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