TDA7384A

Overview

The TDA7384A is a Class-AB audio power amplifier designed for high-end car radio applications. It features four bridge-tied load (BTL) channels delivering up to 46 W per channel into a 4 Ω load, or 27 W at 14.4 V supply with 10% THD. The device operates on a single supply voltage ranging from 8 V to 18 V. Key electrical characteristics include an internal fixed gain of 26 dB and a maximum output current capability. It utilizes a Flexiwatt 25 package for through-hole mounting.

Feature Summary

• Fully complementary PNP/NPN configuration enabling rail-to-rail output voltage swing without bootstrap capacitors.
• Integrated protection mechanisms including output short circuit detection, thermal limiting, and automute functionality.
• Supports standby and mute functions with low external component count requirements.
• Robust automotive-grade design handling load dump voltages, reversed battery conditions, and inductive loads.

Applications

• High-end automotive radio systems
• Car audio power amplification
• Vehicle infotainment speaker driving

Procurement Notes

Verify the specific suffix designation against the manufacturer's official datasheet to confirm pinout orientation and mechanical dimensions, as variations exist within the TDA7384 family. Ensure the procurement source provides valid RoHS compliance documentation. Confirm that the component matches the required Flexiwatt 25 package type for your PCB layout. Cross-reference the part number with the latest STMicroelectronics product selection guide to avoid obsolete variants.

Selection Notes

Select this component when designing automotive audio systems requiring high output power with minimal external passive components. The integrated rail-to-rail output stage simplifies the schematic by eliminating the need for bootstrap capacitors. Consider the thermal management requirements associated with the Flexiwatt 25 package when operating near maximum power ratings. Verify that the application environment meets the specified operating temperature range and supply voltage constraints.

Part Context

The TDA7384A belongs to the TDA738x series of automotive Class-AB audio power amplifiers manufactured by STMicroelectronics. This series is engineered specifically for demanding vehicle environments, offering high reliability and performance. It serves as a solution for multi-channel audio distribution in modern cars, replacing older discrete designs with a highly integrated monolithic approach.

Replacement Considerations

TDA7384B and E-TDA7384A are related variants within the same functional family. Verify mechanical pin compatibility and thermal characteristics before substitution. Consult the official datasheet for specific differences in package orientation or manufacturing revisions.