Model：TTP224N-ASD
Package：SSOP20
4 KEY TOUCH PAD DETECTOR IC
Operating voltage 2.4V~5.5V
ƒBuilt-in regulator with external enable/disable option ƒ Operating current, @VDD=3V no load
At low power mode typical 2.5uA
At fast mode typical 9.0uA ƒ @VDD=3V The response time about 100mS at fast mode, 200mS at low power mode ƒ Sensitivity can adjust by the capacitance(0~50pF) outside for each touch pad ƒ Provides Fast mode and Low Power mode selection by pad option(LPMB pin) ƒ Provides direct mode or toggle mode、 CMOS output or open drain output、 active high or active low by pad option(TOG/OD/AHLB pin). ƒ Provides one output pin TPQ0D that has no diode protection, active low ƒ Have the maximum on time 120sec/64sec/16sec/infinite by pad option(MOT1, MOT0 pin) ƒ After power-on have about 0.5sec stable-time, during the time do not touch the key pad, and the function is disabled ƒ Auto calibration for life, and the re-calibration period is about 4.0sec, when key has not be touched.
Wide consumer products ƒ
Button key replacement
