I'm in the process of designing my first PCB. For the power supply, I have a 4.5V battery pack fed into a voltage regulator that outputs 3.3V. This section of the PCB and governing schematic are shown below:
The battery pack, voltage regulator, and the rest of the components on the PCB are connected to the same ground plane.
Is this OK or should I do something differently in the design such as separating ground for the battery pack and the rest of the circuit?