I am IMX233 for one of the projects.
As per the datasheet for powering up the IMX233 I need a 5.0V power supply. IMX233 contains internal DC - DC Converters to generate 1.8V, 1.2V and 3.3V and a Regulator to generate 2.5V from 3.3V. These regulators and DC-DC converters will take care of power sequencing as well.
Problem: I don't have a 5.0V on board to power-up DC-DC converter of IMX233 and I don't want to use a boost regulator to generate 5.0V from 3.3V and feed to IMX233.
- I am thinking to power-up internal regulator to generate 2.5V from 3.3V.
- Using diodes or some regulators I will generate 1.8V and 1.2V from 3.3V to power up the analog and digital core of IMX233
Anyone please suggest whether it is correct way of powering the IMX233 or I need to follow some other method and how can I take care of power sequencing which is required for IMX233.
Thanks in advance.