TDA7563B

Overview

The TDA7563B is a quad bridge-type car radio amplifier utilizing Multipower BCD technology and DMOS output stages. It delivers up to 4 x 50 W maximum power into 4 Ω loads at 14.4 V with 10% THD, or 4 x 28 W continuous power under the same conditions. The device supports 2 Ω loads with a maximum output of 4 x 72 W. Operating voltage ranges from 8 V to 18 V, with a typical supply of 14.4 V. It features Class SB efficiency architecture for reduced thermal dissipation compared to conventional Class AB designs.

Feature Summary

• Integrated full diagnostics array communicating speaker status via I2C bus
• High-efficiency Class SB internal structure reducing thermal management requirements
• Comprehensive fault protection including DC offset detection and independent short circuit protection
• Configurable gain settings and selectable clipping detector thresholds

Applications

• Automotive radio systems
• Car audio amplifiers
• Vehicle infotainment power stages

Procurement Notes

Verify package availability as the component is offered in Flexiwatt27 and PowerSO36 configurations. Confirm specific ordering suffixes match required thermal and mechanical specifications. Ensure design compatibility with I2C diagnostic protocols and check for RoHS compliance status on current production batches before integration.

Selection Notes

Select this component for applications requiring high output power with simplified thermal management due to its efficient Class SB operation. Consider the integrated I2C diagnostics for system monitoring needs. Evaluate the available packages against PCB layout constraints and ensure the operating voltage range aligns with vehicle electrical systems.

Part Context

This part belongs to STMicroelectronics' automotive audio amplifier portfolio designed for high-power car radio applications. It utilizes proprietary BCD technology to combine digital control and analog power stages. The device addresses the need for clear sound quality and robust protection in demanding automotive environments.

Replacement Considerations

Check datasheets for alternative quad amplifiers with similar power ratings and I2C interfaces. Verify pinout compatibility if substituting directly. Compare thermal performance characteristics and packaging dimensions to ensure fit within existing chassis constraints.