IS31SE5118A-ZNLS3-TR

Overview

The IS31SE5118A-ZNLS3-TR is an ultra-low power, 8-channel programmable capacitive touch sensor manufactured by Lumissil Microsystems. It operates within a supply voltage range of 2.35V to 5.5V and supports an operating temperature range from -40°C to +105°C. The device features a built-in I²C slave controller with a maximum clock frequency of 400kHz for host MCU communication. It includes auto-detection wakeup from sleep mode, individual key calibration, and a shield output to enhance moisture immunity. The component is housed in a TSSOP-16 package.

Feature Summary

• Supports proximity sensing and provides readable key values for all eight channels.
• Features auto sleep mode with key-triggered wakeup for extremely low power consumption.
• Includes a buzzer/melody generator capability and configurable interrupt outputs.
• Offers individual key threshold settings and noise filtering to prevent false triggers.

Applications

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

Procurement Notes

Verify the specific ordering suffix ZNLS3 corresponds to the TSSOP-16 lead-free package configuration as documented in the manufacturer's ordering information table. Confirm that the required quantity aligns with the standard reel packaging specifications provided by the supplier before finalizing procurement orders.

Selection Notes

Select this component when an 8-channel capacitive touch solution with I²C interface is required. Ensure the design accommodates the specified 2.35V to 5.5V supply voltage range and the -40°C to +105°C industrial temperature limits. Verify that the host system can support the 400kHz fast-mode I²C protocol for reliable data exchange.

Part Context

This part belongs to the IS31SE5118A series of programmable capacitive touch controllers. The ZNLS3 suffix specifically denotes the TSSOP-16 package variant, distinguishing it from the QFN-16 package option available within the same product family. Both variants share identical electrical characteristics and functional capabilities.

Replacement Considerations

The IS31SE5118A-QFLS3-TR serves as a direct package alternative within the same series, offering identical functionality in a QFN-16 footprint. Designers must account for pinout differences and thermal management requirements when substituting between the TSSOP-16 and QFN-16 packages.