FDA450LV

Overview

The FDA450LV is a quad bridge Class D power amplifier utilizing BCD-SOI technology, designed for automotive applications. It features integrated 108 dB D/A conversion and supports I2S/TDM digital inputs at sampling frequencies of 44.1 kHz, 48 kHz, 96 kHz, and 192 kHz. The device delivers up to 4 x 50 W into 4 Ω loads at 15.2 V and operates with supply voltages as low as 6 V. It includes full I2C diagnostics, EMI control compliant with CEI EN 55025, and four independent short circuit protections.

Feature Summary

• Integrated high-performance D/A converter with 108 dB dynamic range
• Full I2C bus interface for configuration and comprehensive diagnostics
• Low voltage operation capability supporting start-stop vehicle specifications
• Built-in EMI control mechanisms ensuring FM/AM compatibility

Applications

• Car radio audio systems
• Automotive infotainment platforms
• Vehicle sound system amplification

Procurement Notes

Verify the specific package variant and environmental compliance grade (ECOPACK) required for your design before ordering. Confirm that the TQFP100 exposed pad up configuration matches your PCB footprint and thermal management strategy. Ensure your manufacturing process accounts for the humidity sensitivity classification indicated in the datasheet. Cross-reference the revision history to confirm you are sourcing the latest production data version.

Selection Notes

Select this component when designing automotive audio systems requiring digital input integration without external DACs. It is suitable for applications needing robust diagnostic feedback via I2C and strict EMI compliance within standard single DIN enclosures. Consider its parallel output capability if driving lower impedance speakers like 2 Ω or 1 Ω loads is necessary.

Part Context

This part belongs to STMicroelectronics' portfolio of automotive power amplifiers. It utilizes BCD-SOI technology to integrate powerful MOSFET outputs with high-performance digital-to-analog conversion. This approach offers superior efficiency compared to standard Class AB amplifiers while maintaining low distortion through an internal feedback loop that includes the output L-C low-pass filter.

Replacement Considerations

No direct public substitute part numbers are confirmed in the provided documentation.