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TPS25750: TPS25750DRJKR,slave id

smrutirekha puspasree
Prodigy 170 points
Part Number: TPS25750


Hi Team ,

I want to connect TPS25750 with microcontroller via i2c ,so what is the slave address?it is very confusing . 

Thanks,

smruti

  • 0
    TI__Mastermind 33871 points

    There are 4 possible I2C Slave addresses.

    If you tie both ADCIN1 and ADCIN2 to ground using 100K ohm resistors, then part will start up in safe mode and boot from the EEPROM.  The I2C address in this case is configured to be 0x21

    The Voltage value that is generated by a resistor divider from LDO_3V3 to decode the 0-7 values in the datasheet is shown below

  • 0 in reply to Chuck Branch
    Intellectual 640 points

    Hi ,

    I am belongs to Hardware team . In above said query , the status of  ADCIN1  and  ADCIN2 in custom PCB are :

    ADCIN1  =1.5V (tied to 1.5V) and 

    ADCIN2  =1.5V (tied to 1.5V) .

    From datasheet and above table ,  The decoded values are :  

    ADCIN1  decoded value  =5 and 

    ADCIN2  decoded value  =5 . 

    so, I2C address index = 2 (Always Enable Sink)  and the I2C address in this case is configured to be 0x21. 

    Please confirm my calculations of   I2C address index  =2  as well as  I2C address =  0x21 is correct .. 

    Regards

    Sudheer G

  • 0 in reply to PSG_4
    TI__Mastermind 33871 points

    Sudheer,

    That is correct,.