I consider to supplying 1.5V from external regulator.
PTN3356 has buck converter and LDO for supplying 1.5V.
Must I use either buck converter or LDO for 1.5V?
If can I supply 1.5V from external regulator, could you tell me how to design the circuit and configure the register setting?
If I must use either buck converter or LDO. can I use them without register configuration?