TDF8531HH/N2Y

Overview

The TDF8531HH/N2Y is a three-channel Class-D audio amplifier from NXP Semiconductors, designed for automotive applications. It operates within a supply voltage range of 5.5 V to 25 V and delivers up to 80 W per channel into 2 Ω or 4 Ω loads. The device features a single digital-feedback loop with feedback after the low-pass filter, ensuring high sound quality and reduced system cost. It supports TDM/I²S digital inputs and includes comprehensive diagnostic and protection features such as load dump protection and thermal fold-back.

Feature Summary

• Single digital-feedback loop with post-filter feedback for superior audio quality
• Three BTL channels capable of driving 2 Ω or 4 Ω loads
• Comprehensive diagnostic capabilities including startup, offset, and clip detection
• Robust protection against overvoltage, undervoltage, and thermal stress

Applications

• Automotive head-unit radios
• Vehicle sound systems
• Engine sound design in electric vehicles
• Active noise-cancellation systems

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to ensure correct package and temperature grade. Confirm availability through authorized NXP distributors. Check for any regional compliance requirements relevant to automotive electronics procurement.

Selection Notes

Select this component for applications requiring high power output with minimal external filtering. The integrated digital feedback loop simplifies board layout compared to analog feedback designs. Ensure the system voltage stays within the 5.5 V to 25 V operating range for optimal performance.

Part Context

This part belongs to the TDF853x family of ultra-performance Class-D amplifiers. Other members include the TDF8532 (four channels), TDF8534 (five channels), and TDF8536 (45 V four channels). All share similar architectural features but vary in channel count and maximum voltage ratings.

Replacement Considerations

Direct replacements within the same family include the TDF8532HH for additional channels or the TDF8531HH/N3Y if a different package variant is required. Verify pin compatibility and thermal characteristics before substitution.

FAQ

What is the maximum supply voltage for the TDF8531HH?

The standard TDF8531HH operates with a supply voltage range from 5.5 V to 25 V.

Does the TDF8531HH support active noise cancellation?

Yes, the device is ideally suited for use in active noise-cancellation systems due to its high performance and low distortion.