Hello,
does the PCA9451A support battery backup for NVCC_BBSM_1V8 voltage domain ?
Is there any application note/recommendation how to keep RTC running on iMX93 while there is no external 5V power supply connected to PMIC?
Regards
Arkadiusz
Hi Guoweisun,
It was my first idea, but I realised that from this input also other LDO's are powered so it doesn't seem to be best solution.
Additionally, I am using 32kHZ RTC clock from PMIC for iMX93 as well, so in order to get this clock running IMHO whole PMIC needs to be powered ?
Regards
Arkadiusz
Hi
Yes,correct!
Hi
Do you mean that use battery as input of LDO1 to get the backup power?