Power Management System Design

Thought for 1 min 35 sec

Diagram

Block-to-component mapping (your named parts)

Battery charger stage -> MCP73831 (example: MCP73831T-2ATI/OT)
5V boost stage -> MT3608
3.3V regulator stage -> AP7333-33SAG-7
1.8V regulator stage -> AP7333-18SAG-7
Power selection (auto source select) -> typically implemented with OR-ing Schottkys or ideal-diode controllers; for Schottky OR-ing blocks use Schottky Diode
Status LEDs -> LED 0603 (1608 Metric)
Input/output caps -> Generic Capacitor

If you tell me whether you want the 1.8 V rail derived from 3.3 V (as drawn) or directly from 5 V, I can tweak the block diagram accordingly.

Choose 1.8V source

Add ideal-diode option

Run design sanity check

Pick specific Schottky

Charger input question

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