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PDF TTP233C Data sheet ( Hoja de datos )
| Número de pieza | TTP233C | |
| Descripción | 1 key Touch Pad Detector IC | |
| Fabricantes | TONTEK | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de TTP233C (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
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1 key Touch Pad Detector IC
TTP233C
Outline
z The TTP233C TonTouchTM 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.
Characteristic
z Operating voltage 2.4V ~ 5.5V
z Built-in regulator for touch sensor
z Operating current, @VDD=3V no load
At low power mode typical 2.5uA, maximum 5uA
At fast mode typical 5uA, maximum 10uA
z The response time max about 60mS at fast mode, 220mS at low power mode @VDD=3V
z Sensitivity can adjust by the capacitance（1~50pF）outside
z Stable touching detection of human body for replacing traditional direct switch key
z Provides Fast mode and Low Power mode selection by pad option (LPMB pin)
z Provides normal mode and delay-off mode selection by pad option (DLYB pin)
z Provides output type selection by pad option (TOG pin)
Direct output or toggle output selection on normal mode
Delay-off mode-1 or mode-2 selection on delay-off mode
z Provides maximum on time and delay-off time selection by pad option (MOTA, MOTB pin)
z Q pin is CMOS output can be selected active high or active low by pad option (AHLB pin)
OPDO that has no diode protection, active low
z After power-on have about 0.5sec stable-time, during the time do not touch the key pad, and
the function is disabled
z 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
z Wide consumer products
z Button key replacement
2015/11/10
Page 1 of 11
Version：1.1
1 page  
Function Description
TTP233C
Ⅰ. Sensitivity adjustment
The total loading of electrode size and capacitance of connecting line on PCB can affect the
sensitivity. So the sensitivity adjustment must according to the practical application on PCB. The
TTP233C offers some methods for adjusting the sensitivity outside.
1. by the electrode size
Under other conditions are fixed. Using a larger electrode size can increase sensitivity.
Otherwise it can decrease sensitivity. But the electrode size must use in the effective scope.
2. by the panel thickness
Under other conditions are fixed. Using a thinner panel can increase sensitivity. Otherwise it
can decrease sensitivity. But the panel thickness must be below the maximum value.
3. by the value of Cs（please see the down figure）
Under other conditions are fixed. When do not use the Cs to VSS, the sensitivity is most
sensitive. When adding the value of Cs will reduce sensitivity in the useful range
（1≦Cs≦50pF）.
VDD
ELECTRODE
Cs
VDD
I
Q
OPDO
AHLB
TOG
MOTB
MOTA
DLYB
LPMB
VSS
Ⅱ. Output mode（By TOG、AHLB、DLYB pad option）
TOG pad：
Direct output or toggle output selection on normal mode.
Delay-off mode-1 or mode-2 selection on delay-off mode.
AHLB pad：
Output Q active high or active low selection.
DLYB option pad： Normal mode or Delay-off mode selection.
Delay-off there are mode-1 and mode-2：
mode -1： When key touch action be detected, no matter the key touch action time
is more than or less than delay-off time, the output time is fixed to
delay-off time.
mode -2： When key touch action be detected, if the key touch action time is less
than delay-off time, then the output time is delay-off time, if the key touch
action time is more than delay-off time, then the output time is the key
touch action time.
Touch
mode-1 : Q
delay-off time
delay-off time
delay-off time
mode-2 : Q
delay-off time
delay-off time
delay-off time
2015/11/10
Page 5 of 11
Version：1.1
5 Page 
Package configuration
TTP233C-SSB
Package Type SSOP-16
TTP233C-S
Date code
Lot No.
TTP233C
Ordering Information
TTP233C
Package Type
Chip Type
TTP233C-XXX
TCP233C
Wafer Type
TDP233C
2015/11/10
Page 11 of 11
Version：1.1
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet TTP233C.PDF ] | |
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