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TTP233d single touch key detection IC
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1 key Touch Pad Detector IC
zThe TTP233D-HA6 TonTouch
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.
zOperating voltage 2.4V ~ 5.5V
zBuilt-in regulator for touch sensor
zBuilt-in low voltage reset (LVR) function
zOperating current, @VDD=3V no load
At low power mode typical 2.5uA, maximum 5uA
zThe response time max about 220mS at low power mode @VDD=3V
zSensitivity can adjust by the capacitance(1~50pF)outside
zStable touching detection of human body for replacing traditional direct switch key
zProvides Low Power mode
zProvides direct output or toggle output selection by pin option (TOG pin)
zQ pin is CMOS output can be selected active high or active low by pin option (AHLB pin)
zHave the maximum on time about 16 sec(±50%)
zAfter power-on have about 0.5sec stable-time, during the time do not touch the key pad, and
the function is disabled
zAuto 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

zWide consumer products
zButton key replacement

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