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  • BQ2972: Charging FET is not ON

    Part Number: BQ2972 Tool/software: I have implemented a LiPo charger/protection circuit using BQ29728DSER. The battery which is connected is having 3.558V when i plugged 5V input supply battery charger is FET remain OFF. Discharge FET is ON getting voltage…
    • Answered

  • BQ2972: OVP and CHG MOS

    Resolved
    Part Number: BQ2972 Tool/software: Hello, I am planning to use the BQ29728DSER battery protection IC to provide discharge protection. I have two questions, and I would appreciate your help: I am not considering adding a CHG NMOS since I will only…
    • Resolved

  • BQ2972: BQ29728DSER

    TI Thinks Resolved
    Part Number: BQ2972 Other Parts Discussed in Thread: BQ76905 Dear Sir, This is to inform you that, we are designing the sensors measurement board with battery pack supply, We have a requirement of Battery Pack Monitoring and Protection IC to sensor…
    • Answered

  • BQ2972: protection IC without the need charge or short the source pins of the MOSFETs for initial use?

    Resolved
    Part Number: BQ2972 Tool/software: Hi Team, my customer is looking for a battery protection IC for a 1-cell 18650 battery with the following specifications? Overvoltage: 4.2~4.4V Undervoltage: 2.75~3V Overcurrent: 2~3A He prefers having…
    • Resolved
    • Answered

  • BQ2972: spice model

    Resolved
    Part Number: BQ2972 Hi Team, I am looking for a spice model of the BQ29728DSER. Could you please share it! Thank you! BR, Stefan
    • Resolved

  • BQ2972: Dead battery charging not happening

    Part Number: BQ2972 Hi TI team, Im using BQ29729 part for my battery protection. The problem im facing is once the battery is fully drained, this protection circuit not allowing battery to charge again. Until i make short between V- to Vss system…
    • Answered

  • BQ2972: Will the designed max charge and discharge current change as the battery voltage changes?

    Resolved
    Part Number: BQ2972 Good morning, I see that the BQ2972 device makes use of the Rds(on) of the two external FETs. The Rds(on) of these FETs will be dependent on the Vgs on the FET. It seems that, from the datasheet, the FET high output does not stay…
    • Resolved

  • BQ2972: My circuit not triggering properly while charging

    Part Number: BQ2972 Hi TI expert, Im working on this BQ29729DSET IC. Sometime my circuit not triggering the COUT and DOUT pin. Not sure it because of the FET selection. My requirement is 200mA charging current and 1A max discharging current. So i selected…
    • Answered

  • BQ2972: Can I use a series resistance to adjust the RDS value of the MOSFET

    Resolved
    Part Number: BQ2972 Other Parts Discussed in Thread: CSD16406Q3 Dear team, I have used BQ29728DESR IC in my sensor circuit. It is used to protect a 3.7V 500mAh LiPo battery. My charge current is less than 250 mA. I am using two CSD16406Q3 charge MOSFETs…
    • Resolved

  • RE: BQ2972: Can't get the protection circuit switch on

    Hi George, Nothing is standing out to me as incorrect. Make sure you are measuring the voltages on the pins directly to pin point if the issue is with the device or another component.

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