Hi,
Our schematic design of the TPS659039 does not use the LDO9 channel. Currently we design the LDO9 channel with an input voltage of 3.3V, but the output is open, and no decoupling capacitors are placed on the input and output ports of the LDO9. Could the waveform affect the chip? Can we turn off the LDO9 channel through I2C?