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  • BQ25170: Some strange behaviuor on STAT signal

    Part Number: BQ25170 Tool/software: Hello, I have developed a Li-ion single cell battery charger based on BQ25170J and I am a little confused. I Hope you can help me in clearing ideas. 1) I connected STAT and PG open collector outputs to two leds and…

  • BQ25170: BQ25170DSGR Schematic design review

    Part Number: BQ25170 Please help to review the attached schematic, 1.charger voltage 4.05 2.TS pin connect to battery NTC from 10K OHM 3.PG/STAT pin connect to MCU GPIO setting 4.Ichg current setting to 50mA
    • Answered

  • BQ25170: STAT pin blink when thermal shutdown

    Resolved
    Part Number: BQ25170 Hi team, When thermal shutdown works, does STAT pin blink at 1kHz same as other error mode? Best regards, Goto
    • Resolved
    • Answered

  • BQ25170: Output V accuracy and VSET resistor tolerance

    Resolved
    Part Number: BQ25170 Hi team, The accuracy of output V is +/- 0.8% with +/- 1% tolerance VSET resistor. If this resistor is changed to tolerance +/- 0.1% one, will accuracy of output V improve? Best regards, Goto
    • Resolved
    • Answered

  • BQ25170: BQ25170 with reverse polarity battery connected

    Resolved
    Part Number: BQ25170 Hi, I am using BQ25170DSGR in my design. What will happen if a battery with reverse polarity is connected to this chip out pin? I am not going to use series diode with my battery for reverse polarity protection, because of the voltage…
    • Resolved

  • BQ25170: KSET Parameter Variability

    Part Number: BQ25170 Hello, We are running worst case analysis on the bq25170 with KSET varying from 270 - 330 we calculate needing approximately a 715 ohm resistor. The issue is the wide ranging currents. We calculate out with 715 ohms a 374mA_min and…

  • BQ25170: PG LED blinking too fast around end of charge

    Part Number: BQ25170 Hello, I'm trying to use BQ25170 to charge a 3.7 V Li-Ion battery with a maximal charging current of around 450 mA. The circuit is used is mostly based on what is described in the datasheet : The charging seems to be OK, unfortunately…

  • BQ25170: For 4.28V charge

    Part Number: BQ25170 Hi, I found BQ25170 VSET table as below. If I need 4.28V charge, does it possible to adjust VSET resistor to maybe 25k? or it fixed 4.2 or 4.35? Or any similar charger can support 4.28V charge for LiFePO4? Thanks! Jeff

  • BQ25170: Does it affect to battery charging if external LEDs are used?

    Part Number: BQ25170 Hello TI experts, My customer considers BQ25170 for their new product. As you know, BQ25170 does not have power path. (VIN directly to the load) and my customer wants to use 5 LEDs and MCU to indicate charging status. (these leds…

  • BQ25170: No battery behavior with a load

    Part Number: BQ25170 Other Parts Discussed in Thread: BQ21080 , TLV627432 Designing a USB device which uses a BQ25170 to charge a small LiIon pack, 140 mAH and power an MCU and radio chip. During factory test, we need to power the board without a battery…

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