DRV8243-Q1: Internal LDO output voltage of SPI(S) Variant

Jeffrey Chung1

Part Number: DRV8243-Q1

Hi TI Team,

I'd like ask you about internal LDO output(VDD) voltage of SPI(S) variant. There is no data in electrical characteristics of datasheet. We need to check the digital I/O voltage level on DRVOFF and nSCS because I/O voltage level of MCU is 3.3V. So please check it and let me know.

Regards,

11 months ago

+1 Ryan Kehr 11 months ago

TI__Guru 54645 points

Jeffrey,

As this is an internal supply, we don't specify it. I think all you need is Vih/Vil levels which are given in the datasheet. Also, Voh of SDO (output back to MCU). This voltage depends on nSLEEP voltage which should be 3.3V in your case.

Regards,

Ryan

0 Jeffrey Chung1 11 months ago in reply to Ryan Kehr

Expert 2460 points

Hi Ryan,

Thanks for your response. Is there any materials or data of internal LDO output voltage? Please share it with me if you find it.

Regards,

0 Ryan Kehr 11 months ago in reply to Jeffrey Chung1

TI__Guru 54645 points

Jeffrey,

As I explained before, this is internal and not brought out to a pin for testing. Therefore, we have no data. I really struggle to understand how this is relevant to the discussion above.

Regards,

Ryan

0 Jeffrey Chung1 11 months ago in reply to Ryan Kehr

Expert 2460 points

Hi Ryan,

Thanks for your kind explanation. I understood it.

Regards,

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DRV8243-Q1: Internal LDO output voltage of SPI(S) Variant