IQS525BLQNR

Overview

The IQS525BLQNR is a projected capacitive trackpad controller from the ProxSense series, designed for multi-touch applications. It features 25 maximum sensing channels and supports up to five simultaneous fingers. The device operates on a supply voltage of 1.65V to 3.6V and utilizes an I2C communication interface. It provides absolute and relative XY coordinates, touch strength, area data, and gesture outputs including swipe, scroll, and zoom. The component includes automatic tuning implementation (ATI) for electrode sensitivity optimization and offers proximity detection with low-power operation modes.

Feature Summary

• Supports multi-touch tracking for up to five fingers simultaneously
• Integrates automatic tuning implementation for stable high-performance sensing
• Provides comprehensive gesture recognition capabilities such as swipe and zoom
• Features internal voltage regulation and noise suppression mechanisms

Applications

• Compact capacitive keyboards
• Remote control trackpads
• Navigation devices
• Kiosks and POS terminals
• E-readers

Procurement Notes

Verify the specific ordering suffix BLQNR against current manufacturer documentation to confirm package type and reel specifications. Confirm availability status as product lifecycle stages may affect procurement options. Ensure compatibility with required firmware configurations before finalizing orders.

Selection Notes

Select this model when a compact solution with 25 channels is required for trackpad interfaces. Compare channel counts and report rates against the IQS550 and IQS572 variants if higher resolution or more inputs are needed. Verify that the QFN-28 package dimensions fit the target PCB layout constraints.

Part Context

This component belongs to the IQS5xx-B000 family, which implements projected capacitive trackpad functionality on the IQS525 platform. It shares core architectural similarities with the IQS550 and IQS572 controllers but differs in channel capacity and physical package size. The device is part of Azoteq's ProxSense series focused on low-power proximity and touch sensing.

Replacement Considerations

The IQS525BLQNR is listed as End of Life. Potential functional replacements within the same family include the IQS525B-QNR, though verification of pinout and firmware compatibility is essential.