TDA7563A

Overview

The TDA7563A is a quad bridge car radio amplifier utilizing Multipower BCD technology and DMOS output stages. It delivers 4 x 28 W into 4 Ω at 14.4 V with 10% THD, reaching up to 4 x 50 W maximum power. The device supports 4 x 72 W into 2 Ω loads. Key specifications include selectable gain of 26 dB or 12 dB, an operating supply voltage range of 8 V to 18 V, and a junction temperature range of -55°C to 150°C. It features Class SB efficiency and full I2C bus diagnostics.

Feature Summary

• High-efficiency Class SB operation reduces thermal dissipation by up to 50% compared to conventional Class AB solutions.
• Full I2C digital diagnostics array enables independent monitoring of speaker status, DC/AC load detection, and clipping detection.
• Comprehensive protection suite includes four independent short-circuit protections, linear thermal shutdown with warnings, and ESD protection.

Applications

• Automotive radio systems requiring high output power and simplified thermal management
• Modern vehicle infotainment and cabin audio architectures
• Applications necessitating digital diagnostic feedback via I2C bus

Procurement Notes

Verify the specific package variant (Flexiwatt27 or PowerSO36) required for your design, as availability may vary between these options. Confirm that the I2C interface requirements align with your system controller. Ensure thermal design accounts for the high-power capabilities in enclosed automotive environments. Check current production status and lead times directly with STMicroelectronics or authorized distributors before finalizing procurement plans.

Selection Notes

Select this component when designing automotive audio systems that demand high power density and advanced diagnostic capabilities. The integrated I2C interface allows for real-time monitoring of speaker integrity and fault conditions. Consider the device's superior efficiency if thermal constraints are tight within the vehicle dashboard. The selectable gain settings provide flexibility for different input source levels, ensuring optimal signal-to-noise ratio performance.

Part Context

The TDA7563A belongs to STMicroelectronics' portfolio of multipower BCD technology amplifiers designed specifically for automotive applications. It represents an evolution in car radio amplification, offering higher efficiency than traditional Class AB designs while maintaining high fidelity. This series integrates robust protection mechanisms and digital control interfaces to meet the reliability standards of modern vehicle electronics.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Designers should consult STMicroelectronics for direct replacements or pin-compatible alternatives suitable for their specific automotive audio architecture requirements.