CAP1166-1-BP-TR

Overview

The CAP1166-1-BP-TR is a six-channel capacitive touch sensor integrated circuit featuring RightTouch technology. It includes six programmable LED drivers capable of full-on/off, blinking, dimming, and breathing effects. The device supports SMBus/I2C and SPI communication interfaces, selectable via the ADDR_COMM pin. Operating at a supply voltage of 3V to 3.6V, it offers low power states including Deep Sleep with typical quiescent current of 5µA. The component is housed in a 20-pin 4mm x 4mm QFN package.

Feature Summary

• Six individual capacitive touch sensor inputs with automatic recalibration and programmable sensitivity.
• Six LED driver outputs supporting open-drain or push-pull configurations with programmable blink and dimness controls.
• Multiple pattern touch recognition allowing simultaneous button detection with interrupt generation.
• Low power operation with dedicated wake output flags for standby and deep sleep states.

Applications

• Desktop and Notebook PCs
• LCD Monitors
• Consumer Electronics
• Appliances

Procurement Notes

Verify the specific ordering suffix -BP-TR against official Microchip documentation to confirm the package type and reel specifications. Ensure compatibility with the host controller's communication interface requirements, as the protocol selection depends on external resistor values connected to the ADDR_COMM pin. Confirm thermal management needs based on the QFN package characteristics.

Selection Notes

Select this component when a design requires multiple independent touch inputs combined with visual feedback capabilities. The choice between SMBus/I2C and SPI should be determined by the available host controller resources and wiring constraints. Consider the proximity detection features if enhanced user interaction is required beyond simple button presses.

Part Context

This part belongs to the CAP1166 family of capacitive touch sensors manufactured by Microchip Technology. It utilizes RightTouch technology to provide robust sensing performance. The device is designed to replace mechanical switches in modern electronic interfaces, offering durability and flexible configuration options through its register-based control system.

Replacement Considerations

Check for CAP1126 variants if fewer channels are sufficient. Verify pinout compatibility with existing PCB layouts before substituting. Consult Microchip for any newer revisions or alternative packages within the same functional family.