I am working on incorporating ESD protection for flash circuitry on ESP32 custom PCB board, and after initial research, ordered an ESD Array (CM1293A-04SO) from digikey with datasheet here
Attached in the circuit diagram below, showing
- USB Rx, Tx, and Pin 0 connecting to 3 channels of the array, and
- Handmarked "Flash_3.3V" netlabel connecting to Channel 3,4 via Blue Line and connecting to IC Power Source at pin 5 via Red Line.
My questions is regarding the power line (2 options drawn in red and blue), and I am wondering if the array can simulataneously power and protect the incoming power from USB line.
I got this idea from another protection array RClamp7522T with datasheet link here. with similar electrical circuit ( but higher pricing, with lower capacitance, higher protection range for ESD, a shared zener diode, and no power source), where it shows on page 7, that IC can protect power circuit as well. Please see screenshot