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ADIN1110 Decoupling capacitors when LDO is not used

Category: Hardware
Product Number: ADIN1110
Software Version: N/A

Good day,

We are designing a board with the ADIN1110. In our design the DVDD_1P1 pin is powered by an external 1.1V supply (as can be configured on the EVAL board with the LTC3547B for greater power efficiency). In other words, we are not using the internal 1V1 LDO supply at DLDO_1P1.

We are limited with total capacitance on our board (intrinsic safe design). Since we are not using the LDO, do we still need to place the capacitors specified at DLDO_1P1, CEXT_2 and CEXT_3 (0.68 uF, 0.1 uF and 1 uF, respectively)?

Kind regards,