Convert 3.3V/5V to 1.8 V


Currently I am using optical sensor IC, which is I2C type interface. That particular IC requires 1.8V supply where I am using Arduino Nano, having 3.3V or 5V supply pins. So please tell me how I can get 1.8V supply from Arduino Nano.

Thanking You,

Best Regards,
Ajinkya Shinde

Please do not cross-post. You have already asked this question elsewhere.