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madhu1
Associate II
February 21, 2024
Solved

LDO for STM32H573AII3Q

  • February 21, 2024
  • 1 reply
  • 1697 views

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?

Best answer by mƎALLEm

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.

1 reply

mƎALLEm
mƎALLEmAnswer
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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M
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
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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