This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TPS543B20: TPS543B20: ENABLE

Part Number: TPS543B20

Hi,

We are using TPS543B20 sense regulator for voltage conversion from 12V to 1.1V in non-stackable mode. We would like to know whether ENABLE pin is open drain or push-pull, in datasheet it is mentioned as ENABLE Pin has an internal pull up, we want to know about the internal pull up value.

We would also like you to ensure/ review the below schematic design for the conversion.

Thanks

S Sathya shree

  • Hello,

    The ENABLE pin is pulled up internally to BP, which is 5V.

    I have reviewed the schematic and have one suggestion for you. Since the load current is only 3.5A, the minimum and maximum inductor value for this application is between 0.074uH and 0.372uH. This is required to keep the current ripple within 10-50% of the maximum IOUT.

    Best regards,
    Britton