TTP233D Datasheet, PDF (1/11 Pages) Tontek Design Technology – 1 key Touch Pad Detector IC

TTP233D
1 key Touch Pad Detector IC
Outline
z The TTP233D TonTouch^TM 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 Built-in low voltage reset (LVR) function
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