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The IS32SE5118A-QWLA3-TR is an ultra-low power, 8-channel capacitive touch controller manufactured by Lumissil Microsystems. It operates within a supply voltage range of 2.35V to 5.5V and supports an industrial temperature range from -40°C to +125°C. The device features an on-chip I²C slave controller with a maximum clock frequency of 400kHz for host MCU communication. Key electrical parameters include a quiescent current of 50μA at 5.5V and a minimum detectable capacitance of 0.2pF. It is available in a wettable flank QFN-16 package.
Verify the specific ordering suffix QWLA3 corresponds to the WQFN-16 package configuration before procurement. Confirm that the required quantity aligns with standard reel packaging constraints. Ensure compatibility with the specified operating voltage and temperature ranges for the target application environment.
Select this component when an 8-channel capacitive touch solution with low power consumption is required. Ensure the design accommodates the 2.35V to 5.5V supply range and utilizes an I²C interface for host communication. Consider the thermal resistance characteristics if operating near the upper temperature limits.
This part belongs to the IS32SE5118A family of programmable capacitive touch sensors. It shares core functionality with other variants like the IS31SE5118A but differs in package type. The QWLA3 suffix specifically denotes the wettable flank QFN-16 package variant suitable for high-reliability soldering applications.
Direct replacements must maintain the 8-channel architecture and I²C interface. Verify pinout compatibility between TSSOP-16 and WQFN-16 packages if substituting with different suffixes. Cross-reference absolute maximum ratings to ensure equivalent robustness.