FDA801B-VYY

Overview

The FDA801B-VYY is a quad bridge Class D digital input power amplifier from STMicroelectronics, housed in a 64-LQFP-EP (10x10) surface-mount package. It integrates a high-performance 110 dB D/A converter with I2S and TDM digital inputs supporting sampling rates up to 192 kHz. The device delivers a maximum output power of 4 x 50 W at 4 Ω under 15.2 V supply conditions. It operates within a voltage range starting as low as 6 V, ensuring compatibility with automotive start-stop systems, and functions across an extended temperature range of -40°C to 105°C.

Feature Summary

• Integrates a 110 dB D/A converter with I2S and TDM digital inputs for high-fidelity audio processing.
• Features full I2C bus configurability and comprehensive diagnostics including load detection and fault protection.
• Includes output L-C low-pass filter within the feedback loop to ensure superior frequency response linearity.

Applications

• Automotive single DIN car-radio boxes
• Start-stop engine compatible audio systems
• Compact automotive infotainment units

Procurement Notes

Verify the specific suffix 'VYY' against the official datasheet to confirm tray packaging requirements. Ensure the design supports the required I2C diagnostic interface and digital input protocols. Confirm thermal management solutions for the 64-LQFP-EP package under maximum load conditions.

Selection Notes

Select this component for applications requiring integrated digital-to-analog conversion and robust automotive diagnostics. The 6 V operation capability makes it suitable for modern vehicle electrical architectures. Verify that the system design accommodates the 64-pin LQFP footprint and associated thermal dissipation needs.

Part Context

This part belongs to the FDA801 family of BCD technology amplifiers designed for automotive use. It combines powerful MOSFET outputs with high-efficiency Class D architecture. The family emphasizes EMI control and low radiation functions to meet automotive electromagnetic compatibility standards.

Replacement Considerations

The FDA801A series offers similar functionality but with higher power ratings and different switching frequencies. Verify pinout compatibility and software configuration differences when considering substitutes.