PMIC was designed under 1uH condition for the best ripple and transient response. If the degradations in ripple and transient response are acceptable, 0.47uH can be an option.
Key advantages of CMOS opamps include extremely small input bias current (on the order of pA) and low power consumption. However, the CMOS process features low withstand voltage, making them suitable for low supply voltage applications. Although bipolar opamps provide higher input bias current and current consumption, they offer higher withstand voltage, low noise, low offset, and wide bandwidth.
Ground sense opamps can operate up to the ground level of the input signal. I/O full swing types operate from both input/output and ground to the supply voltage, and is also referred to as Rail-to-Rail. Output full swing can provide output from ground to the supply voltage.
Ground sense opamps can operate up to the ground level of the input signal. The minimum value listed in the parameter for the common mode input voltage range is 0V (=Ground Level=VEE)
3.3V as the pull up source is acceptable even if DVDD is 1.8V. But NVCC_I2C of the I²C domain in SoC should be 3.3V (the same voltage as the pull up source for PMIC) and DVDD in PMIC always needs to be 1.8V.
