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CAP1188-1-CP-TR

MCHPCAP1188-1-CP-TR

Microchip Technology
Multi-channel capacitive touch controller used in compact touch-sensor applications.
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Overview

The CAP1188-1-CP-TR is an 8-channel capacitive touch controller that integrates proximity detection and LED driver capabilities into a compact 24-VFQFN package. It supports multiple communication interfaces including I2C, SMBus, and SPI, making it highly adaptable for various embedded architectures requiring sophisticated user input.

Why Choose This Part

This controller features RightTouch technology and multiple pattern recognition to prevent accidental triggers while supporting complex gestures. It simplifies design by including automatic recalibration and individual sensitivity thresholds for each of the 8 inputs, ensuring reliable performance across different overlay materials.

Applications

Consumer Interface Panels
Replacement for mechanical buttons in appliances and electronics to create sleek, moisture-resistant touch surfaces.
Proximity Sensing
Detecting the presence of a hand or object to wake a system from deep sleep or trigger backlight illumination.
Integrated LED Control
Driving up to 8 LEDs with programmable blink, breathe, and dimming effects directly from the touch controller to provide visual feedback.
Battery-Powered Handhelds
Utilizing the 5uA shutdown current and 500uA typical run current for power-constrained portable devices.

Key Specifications

Type Buttons
Interface I2C, SMBus, SPI
Mounting Type Surface Mount
Package / Case 24-VFQFN Exposed Pad
Current - Supply 500uA
Number of Inputs 8
Voltage - Supply 3V ~ 3.6V
LED Driver Channels 8
Proximity Detection Yes
Operating Temperature -40degC ~ 125degC
Supplier Device Package 24-QFN (4x4)

Getting Started

Engineers can evaluate this part using the CAP1188 Evaluation Board or by connecting it to an Arduino or Raspberry Pi via I2C. The device supports standard 3V to 3.6V logic and is 5V tolerant on IO pins, allowing for easy integration with common microcontrollers using available open-source libraries.

Also Consider

CAP1298-1-A4-TR MCHPMicrochip Technology - A smaller 8-channel alternative if integrated LED drivers are not required for the application.
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