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LMZ34202: lmz34202

Part Number: LMZ34202

Hello

In the datasheet it is specified that AGND and PGND must be seperated. We understood that agnd doesn’t need to be connected to another ground because of the internal connection between agnd and pgnd we thought that it will be okay to not connect a ground to AGND pin. But in the evm (http://www.ti.com/lit/ug/snvu514/snvu514.pdf ) AGND and PGND are connected with a net tie. What is the right way to use these grounds. Any help will be appreciated.

In our application we are using lmz34202 to get 5.3V output from 12V input voltage. Maximum output current will be 2 amps. We didn't connect Agnd  to pgnd in this drawing for now. Should we connect them with a jumper or a 0 Ohm resistor or will it be sufficent for lmz34202 to perform as we are planning to use?

High Regards,