TTP232

2 keys Touch Pad Detector IC TTP232 Outline  The TTP232 TonTouchTM IC is capacitive sensing design specifically for touch pad controls. The device built in regulator for touch sensor. Stable sensing method can cover diversity conditions. Human interfaces control panel links through non-conductive dielectric material. The main application is focused at replacing of the mechanical switch or button. The ASSP can independently handle the 2 touch pads with 2 direct output pins Characteristic  Operating voltage 2.4V ~ 5.5V  Built-in regulator for touch sensor  Operating current, @VDD=3V no load  At stand-by typical 2.5uA  Have two kinds of response time max about 220mS/270mS from stand-by state @VDD=3V, it selects by pad option（DBT pin）  Sensitivity can adjust by the capacitance（1~50pF）outside for each touch pad  Provides direct mode or toggle mode、active high or active low by pad option（TOG/AHLB pin）  Have the maximum on time 16sec/infinite by pad option（MOTB pin）  Offer multi-key or single-key feature by pad option（SM pin）  After power-on have about 0.5sec stable-time, during the time do not touch the key pad, and the function is disabled  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  Wide consumer products  Button key replacement 12/06/25 Page 1 of 8 V...