The KTS1681 does not have a detailed pinout description provided in the text description of your project, and without access to specific datasheets or external databases at this moment, I can't provide the exact pinout information for the KTS1681 Over-Voltage Protection IC.

However, generally, Over-Voltage Protection (OVP) ICs like the KTS1681 typically have pins for input voltage, output voltage, ground, and sometimes a feedback or control pin. If you have the datasheet for the KTS1681 or additional details, it would include the precise pinout along with their functions.

Here's an example table format that might represent what you would find in the datasheet for a hypothetical OVP IC:

Please note this table is hypothetical and for illustration purposes only. The actual pinout for the KTS1681 could differ, including having more or fewer pins and potentially different functions. You would need to consult the specific datasheet of the KTS1681 for accurate information.