The fragrance machine is composed of three PCBs. The top PCB is equipped with a touch detection chip, a light control chip, an RGB LED and a wireless connection board. The middle layer PCB is used to replace the core and fan power supply control. It is equipped with a four channel micro source semiconductor LP3202AB5F synchronous step-down chip, and a fan is installed at the bottom to blow out fragrance.
Related reading:
1. Disassembly report: MIJIA Mijia USB-C intelligent fragrance machine cup holder version N610-CN