IS31SE5117A-QFLS3-TR

Overview

The IS31SE5117A is a 16-channel programmable capacitive touch sensor controller designed for ultra-low-power applications. It operates within a voltage range of 2.7V to 5.5V and supports an operating temperature range from -40°C to +105°C. The device features an on-chip I²C slave controller with 400kHz capability for host MCU communication. It includes auto-detection for wakeup from sleep mode, which consumes under 10uA. The controller provides shield output to increase moisture immunity and utilizes built-in hardware monitors and calibration to prevent false triggers.

Feature Summary

• 16-channel capacitive touch sensing with individual key threshold settings and readable key values
• Automatic and individual key calibration mechanisms to maintain sensitivity
• Integrated buzzer and melody generator functionality shared with touch channels
• GPIO toggle/invert functions and interrupt output with auto-clear capabilities

Applications

• Touch keys for home appliances
• Touch keys for industrial control

Procurement Notes

Verify the specific ordering suffix QFLS3-TR against official Lumissil documentation to confirm package type and reel specifications. Ensure compatibility with the required I²C interface speed and voltage levels for the target system design before finalizing procurement.

Selection Notes

Select this component when a low-power solution with multiple touch inputs is required. Consider the QFN-24 package constraints and the need for an external host MCU for data processing. Evaluate the proximity sensing support if environmental interference mitigation is necessary for the application.

Part Context

This part belongs to the IS31SE series of capacitive touch controllers from Lumissil Microsystems. It is specifically engineered for environments requiring robust touch detection with minimal power consumption. The device integrates advanced calibration algorithms to handle varying environmental conditions effectively.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Verify pinout and register compatibility if considering alternative capacitive touch controllers from other manufacturers.