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BQ24157: bq24150 and bq24157 Application Question

Kuo John
Expert 1075 points
Part Number: BQ24157

Hello Team,

Since bq24150 status into NRND. We plan use bq24157 to reflash bq24150.
As I know we bq24157 need programming all register when first use. (0x00-0x06)
May I know we can use same code to coverage old design bq24150? we can let  bq24150 recognize extra register?

  • 0
    TI__Guru**** 166076 points

    Hi John,

    First, bq24157 pin E2 is input pin CD (charge disable) while bq24150 pin E2 is output AUX PWR.  Second, registers 1 - 4 are the same for the two parts and so the same code should work..  Register 5 of bq24157 includes control of the VINDPM feature of the bq24157 and status of the DPM loops, which might be helpful.  Of course, if you need to charge higher than 4.2V or increase the maximum charge current, you will need to write to Register 6 immediately after power up before writing to any other register.

  • 0 in reply to Jeff F
    TI__Guru**** 166076 points
    John,

    One more thing. The datasheet says the 150 7-bit I2C address is 0x6B. The 157 7-bit I2C address is 0x6A.