Hi teams
My customer encounters an abnormal phenomenon during using PCM3070.
Customer supply LDO IN with 3.3V voltage, disable DLDO through LDO_select pin and disable ALDO through register.
They supply AVDD & DVDD and IOVDD with 1.8V LDO and tie it together. But when they power up the device they found 1.8V supply being charged to 2.3V.
They locate the abnormal power is from IOVDD through disconnect the connection between 1.8V LDO and IOVDD pin. Without any connection the IOVDD still output 2.3V.
Could you help me to figure it out what is going on?