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AWR1843AOP: System supply selection

Part Number: AWR1843AOP
Other Parts Discussed in Thread: TPS7A88, TPS7A8101-Q1, LP5907-Q1, TPS796, TLV713P-Q1

Hi Team, 

May I ask for help? Our customer have a concern: They are interested in the awr1843aop and they would like to make a prototype for their own application. They are trying to find the right PMIC for the radar chip. All the PMIC chips which are recommended by the TI reference designs & products tool are out of stock as far as they have found. They would like to have some help to make the right decision to have a easy to implement pmic for the awr1843aop. The price is not a issue for now. We would like to keep the amount of ic's minimal. 

I was able to check LP87524J and LP87524P for them but both of it are also not available as of the moment. Then a response from our customer was shown below:

If I want to implement this with ldo's, the Reference designs & products tool recommends the TLV713P-Q1, LP5907-Q1, TPS7A8101-Q1, TPS796 and TPS7A88. But these ldo's(as far as I can find) can not deliver nowhere near the recommend powersuppy specifications of the AWR1843AOP. Why are these ldo's recommended? Are they actually enough for this radar chip?I have sent a screenshot of the power supply specifications in the attachments.

I hope you can help us with our customer concern. Thank you so much in advance.

Kind regards,