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SGTL5000 internal regulator for VDDD.

Question asked by Satoshi Shimoda on Feb 21, 2014
Latest reply on Feb 27, 2014 by Jose Alberto Reyes Morales

Hi community,


I have some questions about SGTL5000 internal regulator.

Please see Table 31 in SGTL5000 datasheet.



According to the reset values of LINREG_SIMPLE_POWERUP and LINREG_D_POWERUP, VDDD output automatically immediatelly after VDDIO or VDDA.

Is this correct?



Which power supply (VDDIO or VDDA) is power source of internal regulator for VDDD?



Could you let me know your reccomendataion for SGTL5000 power up sequence?

(e.g. supply VDDIO/VDDA -> internal regulator generates VDDD -> turn off internal regulator for VDDD via I2C -> supply external VDDD -> supply SYS_MCLK)



Do you have a block diagram about internal regulator for VDDD?

I think it helps us to understand internal regulator for VDDD.



Best Regards,

Satoshi Shimoda