TMA525-48BUI25ZZ

Overview

The Infineon TMA525-48BUI25ZZ is a TrueTouch capacitive touchscreen controller from the TMA5XX family, designed for premium smartphone and wearable applications. It supports screen sizes up to 3.0 inches with a maximum of four simultaneous touch inputs. The device features an all-new analog front end combining narrow-band response with high-frequency sampling and hardware DSP filtering for superior noise immunity. Key capabilities include Charger Armor technology eliminating charger noise up to 40 Vpp at 1-500 kHz, best-in-class waterproofing via DualSense self- plus mutual-capacitance architecture, and support for single-layer SLIM sensors. It operates in packages including 48 BGA and 49 CSP.

Feature Summary

• Charger Armor™ technology eliminates periodic and broadband charger noise up to 40 Vpp at 1-500 kHz
• DualSense™ patented self- plus mutual-capacitance sensing enables industry-leading waterproofing and glove operation
• Supports Single-Layer Independent Multitouch (SLIM) sensors for thin, cost-reduced designs
• All-new analog front end with advanced hardware DSP filtering for high signal-to-noise ratio

Applications

• Mobile Phones
• Wearables
• Portable Media Players
• GPS Navigation Devices

Procurement Notes

Verify component authenticity through authorized Infineon or Cypress distribution channels. Confirm package availability, as the TMA525 is offered in 48 BGA and 49 CSP options. Ensure design compatibility with required sensor stackups, such as SLIM single-layer configurations, to leverage the controller's specific noise immunity and power efficiency features.

Selection Notes

Select the TMA525 for applications requiring support for screens up to 3.0 inches with four-touch capability. This model is suitable for power-conscious wearable devices and compact smartphones. Choose this part over larger footprint controllers like the TMA568 when screen size constraints are under 5 inches and full stylus support is not required.

Part Context

The TMA525 belongs to the TrueTouch TMA5XX series, which represents the next level of performance in noise immunity and signal processing. This family builds on previous generations by integrating proprietary Tx-Boost multi-phase drives and increased ADC channel counts for robust correlated noise immunity across all receive lines simultaneously.

Replacement Considerations

The TMA525A is a variant within the same family offering similar functionality but potentially different pin counts or package options (28 QFN/34 CSP). Designers should verify interface compatibility and I/O requirements when considering substitution between these closely related models.