The 4435 chip is provided with the drive signal
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Plug in the 8.4V battery voltage and stabilize it to 5V via the TPS5430. In order to ensure the safety of the system board, the FDS4435 chip is used to separate the power supply 5V and the power supply 5V, and can be switched on only after connecting to the system board. Then, the 5V voltage regulator after conduction is provided to the interface for use, and then the voltage regulator is 3.3V for the DB connector and USB.
NCE integrated circuit, processor, microcontroller NCE4435 SOP-8 2020 chip