TDA7564BPD

Overview

The TDA7564BPD is a quad bridge-type car radio amplifier utilizing Multipower BCD technology and DMOS output stages. It delivers up to 4x50W maximum power or 4x28W at 14.4V into 4Ω loads with 10% THD. The device operates within an 8V to 18V supply range and features Class SB efficiency to reduce thermal dissipation by up to 50% compared to conventional Class AB solutions. It includes full I2C bus diagnostics for speaker status, DC offset detection, short circuit protection, and clipping detection.

Feature Summary

• Multipower BCD technology with DMOS output stage for high efficiency and low distortion
• Full I2C bus digital diagnostics including AC/DC load detection and thermal warnings
• Independent front/rear soft play/mute and selectable gain configurations
• Comprehensive fault protection against short circuits, DC offsets, and over-temperature

Applications

• High-power automotive radio systems
• Car audio amplifiers requiring simplified thermal management
• Vehicle infotainment systems with integrated diagnostic capabilities

Procurement Notes

Verify the specific suffix 'PD' against official STMicroelectronics documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with existing PCB footprints for the PowerSO36 or Flexiwatt25 form factor. Confirm that the design supports the required I2C communication lines for the built-in diagnostic features before finalizing procurement.

Selection Notes

Select this component for applications prioritizing high output power with reduced heat generation through Class SB operation. It is suitable for designs requiring detailed speaker monitoring via I2C. Consider the 36-pin PowerSO package constraints and ensure adequate heatsinking despite the improved efficiency. Verify input signal levels match the internal fixed gain requirements.

Part Context

This part belongs to the TDA7564B family of multifunction quad power amplifiers designed specifically for automotive environments. It represents an evolution in car radio amplification by integrating advanced BCD technology with robust diagnostic interfaces, distinguishing it from standard Class AB amplifiers through its superior thermal performance and system monitoring capabilities.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.