The ADV7842 EVM has several LDOs for different power sections of the ADV7842. Do you see any issues if I combine them into two main ones: 3.3V and 1.8V? I don't use SDRAM, and onlo one HDMI.
No, there is no problem for this as long as you filter the individual power supplies for ADV7842.
BTW: Our evaluation board for ADV8003 (EVAL-ADV8003-SMZ) uses ADV7842 with no SDRAM and has a switching regulator for 3.3V and 1.8V.
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