FDA802SB-VYY

Overview

The FDA802SB-VYY is a dual-bridge Class-D automotive power amplifier manufactured by STMicroelectronics. It integrates a high-performance digital-to-analog converter with powerful MOSFET outputs, achieving an SNR of 110 dB and dynamic range of 108 dB. The device operates within a supply voltage range of 5.5 V to 25 V and supports I2S/TDM digital inputs at sampling frequencies up to 192 kHz. It provides output powers of 2 x 22 W into 4 Ω and 2 x 37 W into 2 Ω at 14 V. Packaged in LQFP64 (exposed pad up), it is AEC-Q100 qualified and compliant with CISPR25 Class V EMI standards.

Feature Summary

• Integrates a high-performance D/A converter for superior audio fidelity
• Supports parallel mode operation for driving 1 Ω loads
• Includes comprehensive I2C bus diagnostics and fault protection
• Features low radiation function for FM/AM compatibility

Applications

• Car radio applications
• Standard single DIN car-radio boxes
• Low voltage start-stop vehicle systems

Procurement Notes

Verify the ordering suffix 'VYY' corresponds to tray packaging as specified in the datasheet. Confirm that the application design accommodates the exposed pad thermal requirements for the LQFP64 package. Ensure the system environment meets the specified operating temperature range of -40 °C to 105 °C. Validate that the power supply constraints remain within the 5.5 V to 25 V operational limits.

Selection Notes

Select this component for designs requiring integrated D/A conversion and robust diagnostic capabilities. It is suitable for applications needing compliance with strict EMI norms like CISPR25 Class V. Consider its ability to drive low impedance loads and operate under varying battery voltages. Verify that the digital interface requirements match the supported I2S and TDM protocols.

Part Context

This part belongs to the FDA802 family of dual bridge Class-D amplifiers designed for automotive use. It utilizes advanced BCD technology to combine digital processing with high-voltage power stages. The FDA802SB variant specifically targets standard car battery operations while supporting boosted supplies up to 25 V for higher power output.

Replacement Considerations

FDA802SB-VYT serves as a tape-and-reel alternative to the FDA802SB-VYY tray version.

FAQ

What is the maximum transient supply voltage?

The maximum transient supply voltage is 60 V for durations not exceeding 50 ms when not operating.

How does the feedback loop affect performance?

The feedback loop includes the output L-C low-pass filter, allowing superior frequency response linearity and lower distortion independently from the inductor and capacitor quality.