TDA7391LVPD

Overview

The TDA7391LVPD is a Class-AB bridge audio power amplifier designed for automotive radio applications. It delivers up to 40W into a 4Ω load and 45W into a 3.2Ω load. The device operates on a single supply voltage ranging from 6V to 18V, supporting low-voltage 'start-stop' profiles. Key electrical parameters include a differential input capability, fixed internal gain, and an output current of 6A. It features comprehensive protection mechanisms including short-circuit, thermal overload, and load dump protection.

Feature Summary

• Supports both differential and single-ended input modes for flexible integration
• Capable of operation down to 6V to ensure compatibility with start-stop vehicle systems
• Includes integrated clipping detector for easy implementation of gain compression
• Features CMOS-compatible standby function to minimize power consumption

Applications

• High-end car radio equipment
• Automotive audio amplification systems requiring low voltage operation
• Vehicle infotainment units with start-stop functionality

Procurement Notes

Verify the specific suffix against the manufacturer's latest documentation to confirm package type and tape/reel specifications. Ensure the component meets AEC-Q100 qualification requirements if mandated by your design. Cross-reference the ordering code with official STMicroelectronics distributors to confirm current availability status and lead times before finalizing procurement plans.

Selection Notes

Select this component when a high-power mono amplifier is required for automotive environments with variable battery voltages. It is suitable for designs needing differential inputs to reduce noise or single-ended configurations for simplicity. Consider its thermal performance and heat dissipation requirements given the high power output in a compact PowerSO-20 package.

Part Context

This part belongs to the TDA7391 series of automotive audio amplifiers. It is specifically engineered for car radio applications where high power efficiency and reliability are critical. The series supports various packaging options to accommodate different board space constraints while maintaining consistent performance characteristics across the product line.

Replacement Considerations

Check for direct substitutes within the TDA7391 family, such as the TDA7391LV or TDA7391PD, ensuring pinout and electrical specifications match. Verify that any replacement maintains the same low-voltage operation capabilities and protection features required for automotive compliance.