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Original question:

Compiler/CC2640R2F: CC2640 crash

BQ25703A: Quick Charging Scheme Question Point Consultation

allen wang17
Intellectual 430 points
Part Number: BQ25703A

question：

1. If BQ25703A is used alone and a fast charging protocol IC is added, can the fast charging data be configurated directly by MCU through SDA, SCL, CHRG_OK, EN_OTG, CMPOUT, and/PROCHOT ports?
2. Where does 1.05V come from in the picture above? What is the role?
3. Is VSYS network a power bus that supplies power to the system?
  • 0
    TI__Genius 16245 points

    Hi,

    My response is in below.

    1. Yes, you need MCU to program BQ25703A by I2C interface.

    2. This 1.05V is external power source for pull high purpose. you can also use 3.3V for pull high as well.

    3. Yes, VSYS should connect to your system power as input.

    Thanks