FDA801SB-VYT

Overview

The FDA801SB-VYT is a quad-bridge Class-D audio power amplifier manufactured by STMicroelectronics, designed for automotive applications. It features a 64-LQFP-EP (10x10) surface-mount package with exposed pad. The device operates on supply voltages of 1.8V and 3.3V, supporting digital inputs including I2S and TDM. It delivers up to 50W per channel into 4-ohm loads. The unit includes integrated diagnostics and is rated for an operating temperature range of -40°C to 105°C.

Feature Summary

• Integrates high-performance D/A conversion with powerful MOSFET outputs in a Class-D architecture for superior efficiency compared to standard Class AB amplifiers.
• Features a feedback loop that includes the output L-C low-pass filter, ensuring superior frequency response linearity and lower distortion independent of component quality.
• Supports low voltage operation down to 6V, making it compatible with modern 'start-stop' engine specifications and low-voltage automotive systems.

Applications

• Automotive host units and single DIN car-radio boxes
• Smart cockpit audio processing systems
• External vehicle sound systems

Procurement Notes

Verify the specific suffix against official datasheets to confirm pinout and electrical characteristics, as variations exist within the FDA801 family. Confirm RoHS3 compliance and MSL level during sourcing. Ensure the supplier provides genuine STMicroelectronics components to guarantee automotive-grade reliability and diagnostic functionality integrity.

Selection Notes

Select this component when designing automotive audio systems requiring high efficiency and compact form factors. It is suitable for applications needing digital input interfaces and robust protection features. Consider its compatibility with low-voltage architectures and EMI control requirements for integration into standard vehicle radio enclosures alongside tuners.

Part Context

The FDA801 series represents STMicroelectronics' BCD technology solutions for automotive audio. This specific model belongs to the FDAx family, which utilizes 400 kHz PWM switching frequencies. It is engineered to provide high output power while maintaining low electromagnetic interference, addressing the needs of modern OEMs for reliable and efficient audio amplification.

Replacement Considerations

Check FDA801B-VYT for similar quad-bridge Class-D performance with comparable power ratings. Verify HFDA801A if higher bandwidth or different switching frequencies are required, noting the architectural differences between the FDA and HFDA families.