TDA7567PD

Overview

The TDA7567PD is a quad bridge power amplifier utilizing Multipower BCD technology and DMOS output stages, designed for automotive applications. It delivers up to 4x28 W into 4 Ω loads at 14.4 V with 10% THD, and supports 4x50 W maximum power. The device features high efficiency Class SB operation, reducing dissipated power by up to 50% compared to conventional Class AB solutions. It includes full I²C bus diagnostics for speaker status monitoring, selectable gain options of 26 dB or 16 dB, and comprehensive protection mechanisms including thermal shutdown, short circuit detection, and DC offset monitoring.

Feature Summary

• High-efficiency Class SB architecture significantly reduces thermal dissipation compared to traditional Class AB amplifiers
• Integrated I²C bus interface enables independent front/rear soft play/mute control and digital diagnostics
• DMOS output stage ensures low distortion and high-fidelity audio performance
• Comprehensive fault protection system includes linear thermal shutdown, clipping detection, and four independent short circuit protections

Applications

• Automotive infotainment systems
• Car radio amplifiers
• Vehicle cabin sound reinforcement

Procurement Notes

Verify the specific package type and ordering suffix against the manufacturer's official datasheet before procurement. Confirm that the required I²C address configuration matches the system design requirements. Ensure compatibility with the vehicle's electrical supply voltage range of 14.4 V. Check for any regional compliance certifications required for automotive electronic components.

Selection Notes

Select this component when high output power and efficient thermal management are critical in automotive environments. The differential input structure simplifies interfacing with source units. Consider the selectable gain settings (26 dB or 16 dB) based on the input signal level from the head unit. The built-in diagnostic capabilities via I²C facilitate easier system troubleshooting and maintenance.

Part Context

This device belongs to STMicroelectronics' portfolio of automotive audio amplifiers leveraging proprietary BCD technology. It is engineered to meet the rigorous demands of modern vehicle information and entertainment systems. The PowerSO36 package provides an optimized solution for power dissipation in compact automotive enclosures.

Replacement Considerations

Consult the official STMicroelectronics documentation for verified cross-reference part numbers. Ensure any substitute component maintains compatibility with the PowerSO36 package and I²C communication protocol.