◆Outline

      The KXD924B-COBN TonTouch^TM 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 4 touch pads with 4 direct output pins

◆Characteristic

◇Operating voltage 2.4V ~ 5.5V
◇Built-in regulator for touch sensor
◇Operating current, @VDD=3V no load
  At low power mode typical 2.5uA, At fast mode typical 13uA
◇@VDD=3V operating voltage :
  The response time about 160mS at low power mode, 60mS at fast mode
◇Sensitivity can adjust by the capacitance（1~50pF）outside for each touch pad
◇Provides Fast mode and Low Power mode selection by pad option (LPMB pin)
◇Provides direct mode or toggle mode、CMOS output or open drain output、
  active high or active low by pad option (TOG/OD/AHLB pin)
◇Have the maximum on time about 16sec/infinite by pad option(MOT0 pin)
◇Provides Single-key and Multi-key functions by pad option (SM pin)
◇After power-on have about 0.5sec stable-time, during the time do not touch the

  key pad, andthe 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 there-calibration period change to 4 sec

◆Applications

◇Wide consumer products
◇Button key replacement