CY8CMBR3106S-LQXIT

Overview

The CY8CMBR3106S-LQXIT is a register-configurable capacitive touch controller from the CapSense Express family, designed for applications requiring up to 16 sensing inputs. It supports a maximum of 11 buttons and two sliders, along with two proximity sensors. The device operates on a supply voltage ranging from 1.71 V to 5.5 V and functions within an industrial temperature range of -40 °C to +85 °C. Communication with the host processor is facilitated via an I2C interface supporting speeds up to 400 kHz. The component is housed in a 16-pin QFN package measuring 3 mm by 3 mm.

Feature Summary

• Supports up to 11 buttons and two sliders (linear or radial) alongside two proximity sensors.
• Features SmartSense Auto-tuning to dynamically maintain optimal sensor performance without manual tuning.
• Includes liquid tolerance capabilities to prevent false touches caused by water droplets or moisture.
• Provides high-sink current General-Purpose Outputs (GPOs) for direct LED driving and buzzer control.

Applications

• Consumer electronics user interfaces requiring button and slider inputs
• Appliance control panels needing robust touch feedback
• Industrial equipment interfaces operating in noisy environments

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to ensure correct packaging and tape-and-reel specifications. Confirm that the selected variant matches the required package type and temperature rating for your specific application environment before finalizing procurement orders.

Selection Notes

Select this model when the design requires both button and slider functionality within a single controller. Ensure the application benefits from the integrated SmartSense Auto-tuning to reduce development time. Verify that the I2C interface compatibility aligns with the host processor's communication requirements.

Part Context

This component belongs to the Infineon CapSense Express family, which eliminates firmware development through register configurability. It utilizes the CSD PLUS sensing algorithm to deliver high signal-to-noise ratios. The family is supported by the EZ-Click Customizer tool for configuration and the Design Toolbox for layout optimization.

Replacement Considerations

The CY8CMBR3108 offers similar features but supports only 8 sensing inputs instead of 16. The CY8CMBR3116 provides full 16-button support but lacks slider capability. Check pinout compatibility and feature sets before substituting.