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TTP233C Dataheets PDF



Part Number TTP233C
Manufacturers TONTEK
Logo TONTEK
Description 1 key Touch Pad Detector IC
Datasheet TTP233C DatasheetTTP233C Datasheet (PDF)

1 key Touch Pad Detector IC TTP233C Outline z The TTP233C TonTouchTM is a touch pad detector IC which offers 1 touch key. The device built-in regulator for touch sensor. Stable sensing method can cover diversity conditions. The touching detection IC is designed for replacing traditional direct button key with diverse pad size. Low power consumption and wide operating voltage are the contact key features for DC or AC application. Characteristic z Operating voltage 2.4V ~ 5.5V z Built-in regulat.

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1 key Touch Pad Detector IC TTP233C Outline z The TTP233C TonTouchTM is a touch pad detector IC which offers 1 touch key. The device built-in regulator for touch sensor. Stable sensing method can cover diversity conditions. The touching detection IC is designed for replacing traditional direct button key with diverse pad size. Low power consumption and wide operating voltage are the contact key features for DC or AC application. Characteristic z Operating voltage 2.4V ~ 5.5V z Built-in regulator for touch sensor z Operating current, @VDD=3V no load At low power mode typical 2.5uA, maximum 5uA At fast mode typical 5uA, maximum 10uA z The response time max about 60mS at fast mode, 220mS at low power mode @VDD=3V z Sensitivity can adjust by the capacitance(1~50pF)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 TTP233C I 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 1 QO 2 OPDO OD 3 VSS P 4 LPMB I-PH 5 TOG I-PL 6 VDD P 7 AHLB I-PL 8 DLYB I-PH 9 MOTB I-PH 10 MOTA I-PH 11 I I/O Pad Description CMOS output pin Open drain output pin active low(have no Diode protective circuit) Negative power supply, ground Low power mode selection, 1(Default)=>Fast mode; 0=>Low power mode Output type option pin, Normal mode: 0(Default)=>Direct output; 1=>Toggle output Delay-off mode:0(Default)=>delay-off mode-1; 1=>delay-off mode-2 Positive power supply Output Q active high or low selection, 0(Default)=>Active high; 1=>Active low Selecting delay-off option pin, 1(Default)=>normal mode; 0=>delay-off mode Maximum on time or delay-off mode time selection, 11(Default) MOTB MOTA Normal mode: Maximum on time Delay-off mode 11 Infinity 2se.


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