CT8222-2/3 is a two or three channel capacitive touch chip specifically designed for electronic cigarettes, used to replace traditional mechanical switches. adopt
Made using CMOS technology, with built-in voltage stabilization modules, hardware stabilization, and adaptive algorithms for environmental values, it greatly improves its resistance to interference
Disturbance performance. It can achieve touch function with high safety in the presence of media (plastic shell, glass ceramic, acrylic, etc.) for isolation protection. have
It has a wide working voltage characteristic and can be configured into multiple working modes through external pins. It is widely used in DC type consumer electronics such as electronic cigarette touch control and light control
On electronic products.
Working voltage: 2.4V~5.5V
Working current: The typical value in low-power mode is only 3uA, while in fast mode it is 6uA (@ VDD=3.0V and no load)
Power on initialization is completed within 0.5 seconds after the power supply stabilizes, during which all functions are disabled. The response time in fast mode is about 45ms, and the maximum response time in low-power mode is about 160ms (@ VDD=3.0V)
Automatic calibration function: Within the first 8 seconds of power on, the reference value is refreshed approximately every 1 second. If there are touch buttons within this 8 seconds or if there are no touch buttons after 8 seconds, the recalibration cycle will be switched to 4 seconds
2 Keys application reset time optional; The reset time for the 3Keys application is approximately 16 seconds
2 Keys can be used for high and low level selection; 3Keys application default output high level
The built-in voltage regulator circuit provides stable voltage for the detection circuit to use
Built in jitter removal circuit can effectively prevent misoperation caused by external noise interference
Sensitivity can be adjusted by external capacitance
Can be used on surfaces of media such as glass, ceramics, plastics, acrylic, etc
Packaging form: DFN3 * 3-8L