TTP233D Datasheet | TONTEK

features for DC or AC application. Characteristic z Operating voltage 2.4V ~ 5.5V z Built-in regulator for touch sensor z Built-in low voltage reset (LVR) function z Operating current, @VDD=3V no load At low power mode typical 2.5u A, maximum 5u A At fast mode typical 5u A, maximum 10u A z The response time max about 60m S at fast mode, 220m S at low power mode @VDD=3V z Sensitivity can adjust by the capacitance（1~50p F）outside z Stable touching detection of human body for replacing traditional direct switch key z Provides Fast mode and Low Power mode selection by pad option (LPMB pin) z Provides normal mode and delay-off mode selection by pad option (DLYB pin) z Provides output type selection by pad option (TOG pin) Direct output or toggle output selection on normal mode Delay-off mode-1 or mode-2 selection on delay-off mode z Provides maximum on time and delay-off time selection by pad option (MOTA, MOTB pin) z Q pin is CMOS output can be selected active high or active low by pad option (AHLB pin) OPDO that has no diode protection, active low z After power-on have about 0.5sec stable-time, during the time do not touch the key pad, and the function is disabled z Auto calibration for life The re-calibration period is about 1 sec within 8 sec after power-on. When key has been touched within 8 sec or key has not been touched more than 8 sec after power-on, then the re-calibration period change to 4 sec Applications z Wide consumer products z Button key replacement 2015/11/10 Page 1 of 11 Version：1.1 Block diagram LPMB MOTA MOTB Sensor oscillator circuit Timing counter & function option control circuit Sensor & Reference detecting circuit Touch detecting circuit Output mode & driver circuit Q OPDO System oscillator circuit Regulator circuit Pin Description Key-on & timing control TOG AHLB DLYB Pad NO Pad Name Type Pad Description 1 Q O CMOS output pin 2 OPDO OD Open drain output pin active low(have no Diode protective circuit) P Negative...