TDA7365

Overview

The TDA7365 is a dual audio amplifier in a Multiwatt15 package designed for stereo car radio applications. It delivers an output power of 2x6W at 4Ω and 2x9W at 2Ω with 10% THD at 14.4V. The device features internally fixed gain, rail-to-rail voltage swing without bootstrap capacitors, and a solid-state switch capable of 1A continuous current. Operating supply ranges from 8V to 18V, with junction temperatures spanning -40°C to 150°C.

Feature Summary

• Includes a solid-state power switch enabled by the standby function to supply signal processing parts and lamps
• Delivers rail-to-rail voltage swing using a fully complementary output configuration without requiring bootstrap capacitors
• Features CMOS-compatible standby and mute functions that eliminate audible pop during transitions
• Provides comprehensive protection against short circuits, thermal overrating, load dump, reverse battery, and ESD

Applications

• Stereo car radio amplifiers
• Automotive signal processing power supply via integrated switch
• Car lamp powering applications

Procurement Notes

Verify the component matches the STMicroelectronics TDA7365 designation and Multiwatt15 package type. Confirm the operating voltage range aligns with automotive standards. Ensure the application circuit accounts for the internal fixed gain and solid-state switch requirements. Check datasheet specifications for absolute maximum ratings before integration.

Selection Notes

Select this component for stereo automotive audio systems requiring high efficiency and minimal external components. The integrated solid-state switch simplifies power management for low-signal sections. Verify that the required output power fits within the 4Ω or 2Ω load constraints. Consider the thermal resistance characteristics for proper heat dissipation in the Multiwatt15 package.

Part Context

This part belongs to the family of Class-AB audio power amplifiers specifically engineered for automotive environments. It integrates audio amplification with power switching capabilities, reducing the need for separate regulators or switches. The design focuses on minimizing external component count while maintaining robust performance under varying automotive electrical conditions.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.

FAQ

Does the TDA7365 require bootstrap capacitors?

No, the fully complementary output configuration allows for rail-to-rail voltage swing without the need for bootstrap capacitors.

What is the purpose of the solid-state switch?

The solid-state switch supplies both the signal processing part of the car radio set and the lamps, simplifying power-on operation.

How does the device handle mute and standby operations?

It features CMOS-compatible mute and standby functions that ensure no audible pop occurs during these transitions.