I am designing a board. First, please place the following power components:
-TP5100 (2A Charger),
-a 5V Buck Converter,
-and a 3.3V LDO regulator.
Connect the 5000mAh battery input to the TP5100.
Route the output to the Buck and LDO. Please ensure correct decoupling capacitors (100uF Tantalum + 0.1uF Ceramic in parallel) are placed near the VCC pins for the 5V rail and 3.3V rail.
Keep this setup clean and minimal.