PCA8546ATT/AY

Display Drivers Overview

The PCA8546ATT/AY is an automotive-grade LCD segment driver manufactured by NXP Semiconductors. It supports up to 176 segments with a maximum clock frequency of 5 MHz and operates within a power supply voltage range of 1.8 V to 5.5 V. The device features a TSSOP-56 package, consumes a maximum current of 60 µA, and dissipates up to 400 mW. It functions across a temperature range of -40°C to +95°C.

Display Drivers Feature Summary

• Complies with AEC-Q100 Grade 3 standards for automotive electronic applications
• Integrates on-chip RAM for display data storage with automatic increment addressing
• Supports four backplane configurations with selectable display bias settings
• Enables separation of LCD and logic power supplies for flexible system design

Display Drivers Applications

• Automotive air conditioning systems
• Car radio displays
• Instrument cluster dashboards

Display Drivers Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix matches the required interface and packaging configuration. Check for end-of-life status as production support may be limited. Ensure compliance with RoHS directives and automotive quality requirements before integration into final assemblies.

Display Drivers Selection Notes

Select this component when designing automotive interfaces requiring high segment counts up to 176. It is suitable for applications needing SPI communication at speeds up to 5 MHz. Consider the wide operating voltage range for systems with varying power rails. Evaluate thermal dissipation capabilities relative to the TSSOP-56 package constraints in enclosed environments.

Display Drivers Part Context

This part belongs to the PCA854x family of LCD segment drivers designed for multiplexed displays. It serves as a dedicated controller for generating drive signals for liquid crystal elements. The series targets robust performance in harsh automotive environments while minimizing microcontroller overhead through integrated memory and addressing features.

Display Drivers Replacement Considerations

NXP recommends using PCF8553DTT/A and PCA85276ATT/A for new designs. Existing inventory of PCA8546ATT and PCA8546BTT will be supported until depletion.