Dear,
we use LP87332A for J6 Entry, we find the LDO1 should be 3,3V, but measurment only 1.8v
and LDO2 should be 3.3V, but measurment only 0v.
LP87322E LDO1 should be 1.8V, but only 0.4V
LDO2 should be 1.8v, but only 0.4v
below as schematic:
it's about user guide table 5 setting?
If any suggestion, Please advise me.
Thanks,
Best regards,
Lawrence.
Hi Lawrence,
Our device expert is out of office today for US holiday, but reviewing the LP8733-Q1 and LP8732-Q1 User’s Guide to Power TDA3x, it looks like LDO0 and LDO1 are not enabled by default for LP87322E-Q1 and LDO1 is not enabled by default for LP87332A-Q1 so it makes sense that they would be measuring 0 V until the processor writes set them to the desired voltage:
They also show as having EN = 0 in the datasheet.
Please check and make sure that the processor - PMIC communication is working properly and that the software is configured to support LP873x based solution. The DRAx Infotainment SoCs forum can help with software setup.
