1.5V power supply for PTN3355

[masahirokiniwa]

Hi,

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?

Best regards,

M.Kiniwa

[guoweisun · Accepted solution]

Hi,

Why do you need external 1.5V for this IC instead of internal LDO or BUCK?

For your questions if this IC doesn't detect the inductor then the LDO will turn on so you can use them without any register configuration.

No more guideline about use external power.

Thanks!