QT102 View Datasheet(PDF) - Quantum Research Group

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QT102

QTOUCH™ TOGGLE-MODE CHARGE-TRANSFER IC WITH POWER MANAGEMENT FUNCTIONS

Quantum Research Group 

LQ

QT102

QTOUCH™ TOGGLE-MODE CHARGE-TRANSFER IC

WITH POWER MANAGEMENT FUNCTIONS

This datasheet is applicable to all revision 2.3 chips

The QT102 is a single key QTouch™ chip combining a touch-on / touch-off

toggle mode with timeout and timing override functions, oriented especially

towards power control of small appliances and battery-operated products. With

OUT 1

its tiny low-cost SOT-23 package, this device can suit almost any product

needing a power switch or other toggle-mode controlled function.

VSS 2

A unique 'Green' feature of the QT102 is the timeout function, which can turn

off power after a specified time delay ranging from minutes to hours.

Furthermore, external 'sustain' and 'cancel' functions permit designs where the SNSK 3

timeout needs to be extended further or terminated early. A user's interaction

with a product might trigger a 'sustain' input, prolonging the time to shutoff. A

safety sensor, such as a tip-over switch on a space heater, can feed the

'cancel' function to terminate early.

Like all QTouch™ devices, the QT102 features automatic self-calibration, drift

compensation, and spread-spectrum burst modulation in order to provide for

the most reliable touch sensing possible. This device brings inexpensive,

easy-to-implement capacitive touch sensing to all kinds of appliances and

equipment, from toys to coffee makers. The small, low cost SOT-23 package

lets this unique combination of features reside in almost any product.

6 TIME

5 VDD

4 SNS

AT A GLANCE

Number of keys:

Technology:

Key outline sizes:

Electrode design:

PCB Layers required:

Electrode materials:

Electrode substrates:

Panel materials:

Panel thickness:

Key sensitivity:

Interface:

Moisture tolerance:

Power:

Package:

Signal processing:

Applications:

Patents:

One toggle mode (touch-on / touch-off), plus programmable auto-off delay and external cancel

Patented spread-spectrum charge-transfer (direct mode)

6mm x 6mm or larger (panel thickness dependent); widely different sizes and shapes possible

Solid or ring electrode shapes

One

Etched copper, silver, carbon, Indium Tin Oxide (ITO)

PCB, FPCB, plastic films, glass

Plastic, glass, composites, painted surfaces (low particle density metallic paints possible)

Up to 50mm glass, 20mm plastic (electrode size dependent)

Settable via external capacitor

Digital output, active high or active low (hardware configurable)

Good

2V ~ 5.5V; 23µA at 2V

SOT23-6 (3x3mm) RoHS compliant

Self-calibration, auto drift compensation, noise filtering

Power switch replacement in countertop appliances, irons, battery powered toys, heaters, lighting

controls, automotive interior lighting, commercial and industrial equipment such as soldering

stations and cooking equipment

QTouch™ (patented Charge-transfer method)

LQ

AVAILABLE OPTIONS

TA

SOT23-6

-40ºC to +85ºC

QT102-ISG

CCopyright © 2007 QRG Ltd

QT102_2R3.04_0807

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