TDA7385EP

Overview

The TDA7385EP is an AB class audio power amplifier designed for high-end car radio applications. It features a fully complementary PNP/NPN configuration enabling rail-to-rail output voltage swing without bootstrap capacitors. The device delivers up to 4 x 42 W at 4 Ω and 4 x 23 W at 14.4 V with 10% THD+N. It operates on a single supply voltage ranging from 8 V to 18 V, with a maximum operating temperature of +150°C. The amplifier includes integrated protections against short circuits, thermal overload, and reversed battery conditions.

Feature Summary

• Fully complementary PNP/NPN architecture allows rail-to-rail output swing without external bootstrap capacitors
• Integrated clipping detector simplifies gain compression operations
• Comprehensive fault diagnostics detect assembly mistakes, wiring errors, and component failures
• Low external component count due to internally fixed gain and no need for external compensation

Applications

• High-end car radio systems
• Automotive audio power amplification
• Quad bridge speaker driving in vehicles

Procurement Notes

Verify the specific suffix EP against official STMicroelectronics documentation to confirm package orientation and pinout compatibility. Ensure the ordered part matches the required Flexiwatt 25 variant for your PCB layout. Cross-reference the AEC-Q100 qualification status if automotive reliability standards are mandatory for your design implementation.

Selection Notes

Select this component when designing compact automotive audio systems requiring high output power with minimal external circuitry. The absence of bootstrap capacitors reduces bill of materials cost and board space. Consider the internal fixed gain of 26 dB and available diagnostic features for simplified system integration and fault detection during vehicle assembly.

Part Context

The TDA7385 belongs to STMicroelectronics' portfolio of Class-AB automotive audio amplifiers. It is engineered specifically for demanding in-car environments, offering robust protection against electrical anomalies like load dumps and reversed polarity. The Flexiwatt 25 package facilitates efficient heat dissipation for sustained high-power operation in confined automotive spaces.

Replacement Considerations

Public confirmed substitute part numbers: TDA7385H, E-TDA7385.