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madhu1
Associate II
February 21, 2024
Solved

LDO for STM32H573AII3Q

STM32H573AII3Q is a 169 pin UFBGA SMPS package. Along with SMPS option, does it also have internal LDO for core supply? Can we use internal LDO to supply core voltage for this package?

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mƎALLEm
mƎALLEmBest answer
ST Technical Moderator
February 21, 2024

Hello @madhu1 ,

Only SMPS is supported by this package. And according to the reference manual:

SofLit_0-1708509182207.png

So the package has only one PWR config: SMPS or LDO.

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4 replies

mƎALLEm
mƎALLEmBest answer
ST Technical Moderator
February 21, 2024

Hello @madhu1 ,

Only SMPS is supported by this package. And according to the reference manual:

SofLit_0-1708509182207.png

So the package has only one PWR config: SMPS or LDO.

To give better visibility on the answered topics, please click "Best answer" on the reply which solved your issue or answered your question.
madhu1Author
Associate II
February 21, 2024

Hello,

I think it has both option. Even for SMPS power scheme, there is a LDO shown internal to uC. Refer below image: Please let me know if my understanding is correct.

madhu1_1-1708515188471.png

 

 

 

mƎALLEm
mƎALLEm
ST Technical Moderator
February 21, 2024

Indeed the LDO is there on the die but it is disabled by HW as already said in RM section 10.5.1.

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