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TPS61322: TPS613221A question

Allan Fan
Expert 7090 points
Part Number: TPS61322

Hi expert,

Customer would like to know what are the internal feedback resistors? They want to calculate the leakage current when boost is off but Vo still have voltage condition. 

Thanks,

Allan

 

  • 0
    TI__Guru 65550 points

    Hello Allan,

    These resistors are normally in the Mohm range, but the exact value is process dependent and varies somewhat. In addition, the question is if the resistors are still connected to the output when the IC is disabled. Due to national holiday in China the experts for this device are not available until end of the week, so please give us time until beginning of next week to come back to you.

  • 0
    TI__Mastermind 46905 points

    Hi Allan,

    this device can't be disabled. do you want to calculate the no load input current or you like me to suggest another device with disable function.

  • 0 in reply to Jasper Li
    TI__Intellectual 1425 points

    Hi Expert,

    Thank you for your reply.

    I have more question would like to check, please help to check below questions.

    1. Please still provide me the resistance data, because I need to debug my current consumption on existing board.
    2. Yes, please provide the “disable” device and it’s better pin-to-pin to TPS613221.

  • 0 in reply to Bo Xian Yeh
    TI__Mastermind 46905 points

    Hi BoXian,

    I have a phone call to discuss this issue with Allen yesterday. the current consumption into the VOUT pin is 6.5uA which includes the feedback resistor current. you can use this current to calculate the input current : VOUT*6.5u/ (VIN*Eff)

    2. there is no pin-pin device. customer can add a p-fet in series with battery to shutdown the IC