Main components

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Part NumberDescription
USBLC6-2SC6Very low capacitance ESD protection diode, 2 data-line, SOT-23-6
RP2040A microcontroller by Raspberry Pi
W25Q128JVSIQ128Mbit / 16MiB Serial Flash Memory, Standard/Dual/Quad SPI, 2.7-3.6V, SOIC-8
BQ24074RGTUSB-Friendly Li-Ion Battery Charger and Power-Path Management, VQFN-16
VDD331MCTA
RT6160A
MT9700-N80mΩ,Adjustable Fast Response Current-Limited Power-Distribution Switch
MT3608BHigh Efficiency 1.2MHz 2A Step Up Converter, 2-24V Vin, 28V Vout, 4A current limit, 1.2MHz, SOT23-6
MAX98357AEWLMono DAC with amplifier, I2S, PCM, TDM, 32-bit, 96khz, 3.2W, TQFP-16

board schematic

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board board layout

board PCB render

Top PCB
Bottom PCB