TTP233D-HA6
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Revision 1.7 2014-04-25
深圳芯派科技
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1 key Touch Pad Detector IC
Outline
z The TTP233D-HA6 TonTouch TM 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 Built-in low voltage reset (LVR) function
z Operating current, @VDD=3V no load
At low power mode typical 2.5uA, maximum 5uA
z The response time max about 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 Low Power mode
z Provides direct output or toggle output selection by pin option (TOG pin)
z Q pin is CMOS output can be selected active high or active low by pin option (AHLB pin) z Have the maximum on time 16 sec
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
Block diagram
Electrical Characteristics
z
Absolute maximum ratings英联邦成员国
z
DC / AC characteristics ：（Test condition at room temperature = 25 ℃）
Parameter Symbol Conditions Rating Unit
Operating Temperature T OP ─ -40～+85 ℃ Storage Temperature T STG ─ -50～+125 ℃ Supply Voltage VDD Ta=25°C VSS-0.3～VSS+5.5 V Input Voltage V IN Ta=25°C
VSS-0.3～VDD+0.3
V
Human Body Mode
ESD
Note ：VSS symbolizes for system ground
Parameter Symbol Test Condition Min Typ Max Unit
Operating Voltage VDD 2.4 3 5.5 V
Internal Regulator Output VREG 2.2 2.3 2.4 V I OPL VDD=3V, At low power mode 2.5 5 uA Operating Current I OPF VDD=3V, At fast mode 5.0 10 uA Input Ports V IL Input Low Voltage 0 0.2 VDD Input Ports
V IH
Input High Voltage
神经节苷脂钠0.8
1.0
VDD
Output Port Sink Current I OL VDD =3V, V OL =0.6V 8 mA
Output Port Source Current I OH VDD =3V, V OH = 2.4V -4 mA Input Pin Pull-low Resistor
R PL
VDD=3V
(TOG, AHLB) 25K ohm VDD=3V 、 At fast mode 60
Output Response Time T R
VDD=3V 、
At low power mode
220
图片轮显
mS
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