E-TDA7391PD

Audio Amplifiers Overview

The E-TDA7391PD is a bridge Class-AB audio power amplifier designed for automotive applications. It delivers up to 40W output into a 3.2Ω load and 32W into a 4Ω load at 14.4V supply with 10% THD. The device operates on a single supply voltage ranging from 8V to 18V. It features differential inputs, internally fixed gain of 30dB, and comprehensive protection mechanisms including short-circuit, thermal overload, and load dump protection.

Audio Amplifiers Feature Summary

• Bridge Class-AB architecture optimized for high-power car radio applications
• Supports both differential and single-ended input signal configurations
• Integrated clipping detector facilitates gain compression system implementation
• Eliminates need for bootstrap capacitors, Boucherot cells, and SVR capacitors

Audio Amplifiers Applications

• High-power automotive radio amplifiers
• Car audio boosters
• End-level car radio equipment

Audio Amplifiers Procurement Notes

Verify the specific suffix 'E' against the manufacturer's official documentation to confirm if it denotes a specific tape-and-reel variant or packaging distinction compared to standard TDA7391PD. Confirm AEC-Q100 qualification status directly with STMicroelectronics as datasheet availability may vary by region. Ensure the ordering part number matches the exact pinout and thermal pad configuration required for your PCB layout.

Audio Amplifiers Selection Notes

Select this component when designing mono bridge-tied load (BTL) systems requiring high efficiency and minimal external passive components. The internal fixed gain simplifies circuit design by removing external feedback resistors. Consider the Multiwatt-11 package for through-hole mounting where robust thermal dissipation is critical for sustained high-power operation in automotive environments.

Audio Amplifiers Part Context

This part belongs to the TDA7391 series of automotive audio amplifiers. It shares core architectural similarities with variants like the TDA7391PDU but differs in packaging and potentially reel specifications. The series is characterized by its fully complementary output stage and ability to operate reliably under harsh automotive electrical conditions, including wide voltage fluctuations.

Audio Amplifiers Replacement Considerations

Direct substitutes include TDA7391PDU and TDA7391PDUTR. Verify pin compatibility and thermal performance characteristics before substitution. Other family members like TDA7391LV offer low-voltage operation but may differ in electrical specifications.