TTP223E-HA6_PDF_C129459_2017-09-14

1 key Touch Pad Detector IC

Outline

z The TTP223E-HA6 TonTouch TM is a touch pad detector IC which offers 1 touch key. 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 2.0V ~ 5.5V

z Operating current, @VDD=3V no load

At low power mode typical 2.0uA, maximum 4.0uA

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 about 100 sec(±50%)

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

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

─ 5 KV

Note ：VSS symbolizes for system ground

Parameter Symbol Test Condition Min Typ Max Unit

Operating Voltage VDD

2.0 3 5.5 V I OPL VDD=3V, At low power mode 2.0 4.0 uA Operating Current I OPF VDD=3V, At fast mode 5.0 10.0 uA Input Ports V IL Input Low Voltage 0 0.2 VDD Input Ports

V IH

Input High Voltage

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

mS

Ⅲ. Maximum key on duration time

If some objects cover in the sense pad, and causing the change quantity enough to be detected.

Application circuit

Package outline Package Type: SOT23-6L

Package configuration TTP223E-HA6