USB-C connector with CC pull-downs and input protection
5 V input rail from USB-C
3.3 V regulator for BLE MCU
RGB output stage:
Low-side N-MOSFETs for common-anode RGB LED strip/module, or
Direct-drive/current-limited RGB LEDs if it is a small onboard LED
Decoupling, boot/programming circuitry, and required pull-ups/pull-downs per datasheets
Optional USB data connection for programming/debug if using a USB-capable MCU
Key clarification needed before schematic work:
Are you controlling an RGB LED strip, discrete onboard RGB LEDs, or both?
Expected RGB current per channel?
Preferred BLE platform: ESP32, nRF52, or no preference?
Should USB-C be power-only, or also used for programming/debug?
Target board size or connector/output preference?
Once execution is available, I would start by creating the project spec, selecting the BLE MCU and power path, wiring the full schematic, adding decoupling/protection, and running review until clean.
Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portal
General Purpose Thick Film Standard Power
and High-Power Chip Resistor
47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film
Features:
- RMCF – standard power ratings
- RMCP – high power ratings
- Nickel barrier terminations standard
- Power derating from 100% at 70ºC to zero at +155ºC
- RoHS compliant, REACH compliant, and halogen free
- AEC-Q200 compliant