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Overview of TTP223

The TonTouchTM TTP223 is a touchpad detector IC with a one-touch key. The touching detection IC is intended to be used in place of typical direct button keys with a variety of pad sizes. The contact essential benefits for DC or AC applications are low power consumption and a wide operating voltage range.

TTP223 Features

  • Operating voltage 2.0V~5.5V

  • Operating current @VDD=3V, no load

  • At low power mode typical 1.5uA, maximum 3.0uA

  • The response time max 220mS at low power mode @VDD=3V

  • Sensitivity can adjust by the capacitance(0~50pF) outside

  • Stable touching detection of the human body for replacing the traditional direct switch key

  • Provides Low Power mode

  • Provides direct mode、toggle mode by pad option(TOG pin) Q pin is CMOS output

  • All output modes can be selected active high or active low by pad option(AHLB pin)

  • After power-on have about 0.5sec stable time, during the time do not touch the keypad, And the function is disabled

  • Auto calibration for life at low power mode the re-calibration period is about 4.0sec normally when key detected touch and released touch, the auto re-calibration will be redoing after about 16sec from releasing key

  • The sensitivity of TTP223N-BA6 is better than TTP223-BA6’s. But the stability of TTP223N-BA6 is worse than TTP223-BA6’s. 

 

TTP223 Pinout

TTP223 Pinout

 

Pad No. Pad Name I/O Type  Pad Description 
1 Q  O  CMOS output pin 
2 VSS P  Negative power supply, ground
3 I  I/O  Input sensor port
4 AHAB  I-PL Output active high or low selection,
1=>Active low; 0(Default)=>Active high 
5 VDD P Positive power supply
6 TOG  I-PL Output type option pin,
1=>Toggle mode; 0(Default)=>Direct mode

TTP223 Block Diagram

TTP223 Block Diagram

Specifications

Tontek Design Tech TTP223-BA6 technical specifications, attributes, parameters and parts with similar specifications to Tontek Design Tech TTP223-BA6.

Attribute Value
Package / Case SOT-23-6
Packaging Tape & Reel (TR)

TTP223 Absolute Maximum Ratings

Parameter Symbol Conditions Value  Unit 
Operating Temperature  TOP —— -40 ~ +85 ℃
Storage Temperature  TSTG —— -50 ~ +125 ℃
Power Supply Voltage VDD  Ta=25°C  VSS-0.3 ~ VSS+5.5 V 
Input Voltage VIN Ta=25°C VSS-0.3 ~ VDD+0.3  V 
Human Body Mode ESD  —— 4 KV 
Note： VSS symbolizes system ground 

TTP223 Applications

  • Wide consumer products

  • Button key replacement 

TTP223 Package information

TTP223 Package information

Frequently Asked Questions

FAQ

What is TTP223?
The TTP223 is a single-touch pad detector IC with a single touch key. The touching detection IC is intended to be used in place of typical direct button keys with a variety of pad sizes. The contact essential benefits for DC or AC applications are low power consumption and a wide operating voltage range.
What’s the operating temperature of TTP223?
2.0V~5.5V.
How does a TTP223 work?
The TTP223 is an IC that simulates a single tactile button on a touch pad. This touch detecting IC is intended to be used in place of typical direct button keys with a variety of pad sizes. 3. Human body contact detection that is stable enough to replace the typical direct switch key.
How do I increase the sensitivity of my TTP223?
Outside, the TTP223 has a few options for changing the sensitivity. 1-1 multiplied by the electrode size Other circumstances are set. Sensitivity can be improved by using larger electrodes. Otherwise, sensitivity may be reduced.
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