Search tips
Showing 51 results View by: Thread Post Sort by
    Answered

  • BQ25122: I2C Unstable Operation and SDA Latch Phenomenon below BATUVLO (BQ25122)

    Resolved
    Part Number: BQ25122 Tool/software: Dear TI Community, I am experiencing the following issues with a circuit using the BQ25122: When the battery voltage (VBAT) falls below BATUVLO (approx. 3.0V), the physical I2C waveforms can still be observed…
    • Resolved

  • BQ25122: Alternative IC to BQ25122 without buck

    TI Thinks Resolved
    Part Number: BQ25122 Other Parts Discussed in Thread: BQ25180 , BQ25150 Hi TI! Do you have a proposed alternative to the BQ25122 without the mandatory 1V2 buck converter and still with features such as HOT/COLD behaviour, battery voltage monitoring, VinDPM…

  • BQ25122: Failure Modes of BQ25122

    TI Thinks Resolved
    Part Number: BQ25122 Hi TI! We are doing an analysis of our circuit which is including BQ25122. Seen from the battery, then how can BQ25122 fail? Do you have a failure mode overview similar to https://www.ti.com/lit/fs/sbva075/sbva075.pdf?ts=1661954706711…
    • Answered

  • BQ25122: BQ25122 Battery Monitor with Vin present

    Resolved
    Part Number: BQ25122 Other Parts Discussed in Thread: BQ25120 Hi there! We are trying to monitor VBAT on the go while charging, but I seem to have difficulties triggering a new measurement by writing a 0x0b10000000 to BQ25120_BATT_VOLT_MONITOR_REG…
    • Resolved
    • Answered

  • BQ25122: Precharge timing

    Resolved
    Part Number: BQ25122 Hi all, According to the datsheet, the charge safety timer has programmable range. How do we configure it? I didin't see any I2C registers for this. Thanks Regards, Damien
    • Resolved
    • Answered

  • BQ25122: Battery charging issue

    Resolved
    Part Number: BQ25122 Hi, I am using a BQ25122 to charge a VARTA CP1240A3 battery (Li-ION, 3.7V - 0,2Wh). I connected a 4,99K resistor to Riset (40mA Icharge) I connected a 1K resistor to RLim(200mA Ilimit) I connected a 4,99K resistor to Rtterm…
    • Resolved
    • Answered

  • BQ25122: Rlim Rset and Rpreterm

    Resolved
    Part Number: BQ25122 Hi all, In case of using the BQ25122 in stand alone mode, If i connect ILIM, ISET and IPRETERM to GND, what will be charge current and the input current limit? what about the precharge current, what will be the % of ISET? Thanks…
    • Resolved
    • Answered

  • BQ25122: BQ25122

    Resolved
    Part Number: BQ25122 Other Parts Discussed in Thread: EV2400 , BQSTUDIO Hi TI I have a BQ25122 Eval Board and a EV2400 USB to I2C. Do TI kane some kind of software to manual program the BQ25122 chip? I just need to manual read/write to registers.…
    • Resolved

  • BQ25122: bq25122 I2C Control?

    TI Thinks Resolved
    Part Number: BQ25122 Hi Sir, If bq25122 need I2C control to active? Or it's default active, even no I2C control? I just debug, want to check first if I2C communicate is necessary. Thanks, Ian.

  • BQ25122: Not possible for 3.8Vin or 4.2Vin to start charging

    Part Number: BQ25122 Hi Experts, Good day. We have this case from client. According to the datasheet, voltage input can be from 3.4V to 5.5V. However, on the board we designed, voltage input min is 4.9V to enable the charge. Why is it not possible…

Didn't find what you are looking for? Post a new question.