TDA7378

Overview

The TDA7378 is a four-channel Class-AB audio power amplifier designed for car radio applications. It operates within an 8V to 18V supply voltage range and delivers up to 40W of output power into a 2-ohm load per channel. The device features integrated protection mechanisms including thermal shutdown, short-circuit protection, and pop-noise suppression. It utilizes a Multiwatt15 package suitable for surface-mount installation.

Feature Summary

• Four-channel quad bridge configuration for high-power audio output
• Integrated thermal and short-circuit protection circuits
• Pop-noise suppression technology for silent switching
• Designed specifically for automotive radio environments

Applications

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

Procurement Notes

Verify the specific suffix code on the component marking against the official STMicroelectronics datasheet to confirm exact electrical characteristics and packaging variant. Ensure compatibility with existing PCB footprint and thermal management design before integration. Cross-reference part numbers carefully as variations may exist between manufacturers or revisions.

Selection Notes

Select this component when a robust, high-power four-channel solution is required for automotive audio. Consider the Multiwatt15 package for its thermal performance in space-constrained vehicle dashboards. Evaluate the 2-ohm load capability against speaker impedance requirements to ensure optimal efficiency and power delivery without exceeding thermal limits.

Part Context

This part belongs to the TDA73xx series of automotive audio amplifiers from STMicroelectronics. These components are engineered to meet the rigorous demands of vehicle electronics, offering reliable performance under varying temperature conditions and electrical noise typical in automotive environments.

Replacement Considerations

Check for direct pin-compatible substitutes such as the TDA7372A if available, ensuring voltage and power ratings match. Verify that any replacement maintains the same package type and thermal dissipation capabilities to avoid redesigning the heatsink or PCB layout.