BQ25185: BQ25185

Part Number: BQ25185


Hello, is my schematic correct and does it meet the following requirements: connecting to a flexible solar panel and integrating a stable 4.5V output as the main power distribution bus? The internal Power Path management circuit should intelligently direct energy flow: when solar power is sufficient, it prioritizes using solar energy to power the system while simultaneously charging the lithium battery; when solar power is insufficient or unavailable at night, the chip should automatically and seamlessly switch to battery power to ensure continuous system operation. The BQ25185 should limit the input current from the solar panel to 1.1A, set the charging termination voltage to 4.2V, and the charging current to 300mA. Are all the pin connections correct? I look forward to your reply.a4a591c1da6246b5aeec7779cfaf454c.png

  • Hello, we have received your case. The investigation will take some time, and we appreciate your patience.

  • Hi,

    The schematic is correct. Please see my notes below:

    • IN, SYS, and BAT each have the required capacitances
    • ILIM/VSET = 13k sets VBATREG = 4.2V and ILIM = 1100mA
    • ISET = 1k sets the fast charge current to 300mA
    • 10k from TS/MR to GND maintains a valid voltage on this pin for charging (TS Normal)
    • STAT1 and STAT2 can be left floating if unused
    • /CE tied to GND keeps charging enabled

    Best regards,

    Lydia