TDA7565

Overview

The TDA7565 is a quad bridge-type car radio amplifier utilizing BCD technology and DMOS output stages, housed in a 27-Flexiwatt vertical package. It operates on an 8V to 18V supply with a junction temperature range of -55°C to 150°C. The device delivers up to 4 x 59W at 14.4V with a 17.5V PWM input or 4 x 41W max at standard conditions into 4-ohm loads. Key electrical features include full I2C bus driving for diagnostics, selectable gain between 12dB and 26dB, hardware mute functions, and comprehensive protection against short circuits, DC offsets, and thermal overload.

Feature Summary

• Integrates a switching high-efficiency voltage converter to support low-voltage 'start-stop' battery profiles while maintaining high output power.
• Features a non-switching high-efficiency amplifier stage with DMOS outputs for low distortion and clear audio reproduction.
• Provides full I2C bus control for independent front/rear soft play/mute, standby modes, and selectable clipping detection thresholds.

Applications

• Automotive car radio amplification systems
• Vehicle infotainment audio processing
• Low-voltage operation environments compliant with OEM start-stop specifications

Procurement Notes

Verify current availability status as the component is marked obsolete. Confirm end-of-life timelines and last-time buy windows directly with STMicroelectronics or authorized distributors. Ensure replacement strategies are evaluated due to discontinued production status.

Selection Notes

Select this component for legacy automotive audio designs requiring quad bridge amplification with integrated I2C diagnostics. Consider the Flexiwatt27 package constraints and thermal management requirements. Evaluate alternative active devices if new design-in opportunities exist given the obsolete status.

Part Context

Part of the TDA756x family of intelligent power amplifiers designed for automotive applications. This series emphasizes high efficiency and diagnostic capabilities through I2C interfaces, supporting modern vehicle emission reduction goals via optimized power management during engine stop phases.

Replacement Considerations

Public confirmed substitute part numbers: None available.