How to wire a TTP223 Touch sensor switch with 12V LED belt

Thread Starter

Kelvin Lee

Joined Oct 22, 2018
Dear Sir/Madam,

I read the datasheet of TTP223 touch sensor switch, the operating voltage is 2.0V~5.5V, I only have one 12V battery source, how can I wire the battery with 12V LED belt and this touch sensor switch? I know how the voltage divider work but no idea how to wire the I/O pin of the TTP223 touch sensor switch, do anyone can help?

Best regards,



Joined Mar 19, 2019
VCC to the output of the voltage divider, GND to ground and the OUT is your input signal to the circuit.


Joined Jun 19, 2012
The TTP223 has a lot going on inside, running it straight from a resistor divider might not work well.
Use a small voltage regulator to insure a stable Vcc.

Use the output to drive an N-CH MOSFET driving your LED load.