TDF8532HH/N2Y

Overview

The TDF8532HH/N2Y is a four-channel Class-D audio amplifier from NXP's TDF853x family, designed for automotive applications. It delivers up to 4 x 80 W into 2 Ω loads with a supply voltage range of 5.5 V to 25 V. The device features a single digital-feedback loop and operates in TDM/I²S format. Key specifications include a THD+N of 0.02% and idle power dissipation of 2.8 W. It supports interleaved power stages for improved EMC and includes comprehensive diagnostic and protection features.

Feature Summary

• Single digital-feedback loop architecture reduces system cost while ensuring high audio quality
• Four BTL channels capable of driving 2 Ω or 4 Ω loads, with parallel mode support for 1 Ω
• Comprehensive diagnostic capabilities including startup checks, supply monitoring, and clip detection
• Robust protection mechanisms featuring load dump tolerance, thermal fold-back, and over/undervoltage safeguards

Applications

• Automotive head-unit radios
• Vehicle sound systems
• Active noise-cancellation systems
• Electric vehicle engine sound design

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current selection guide to confirm package type and tape/reel specifications. Ensure compatibility with the target application's voltage requirements and thermal management constraints before finalizing procurement decisions.

Selection Notes

Select this model for designs requiring four independent high-power channels within a compact footprint. Consider the interleaved mode option if enhanced electromagnetic compatibility is critical. Evaluate the idle power dissipation relative to the available cooling solution to maintain optimal thermal performance during operation.

Part Context

This component belongs to the NXP TDF853x series of ultra-performance Class-D amplifiers. The series includes variants with three, four, or five channels, catering to different audio channel configurations. The TDF8532 specifically provides four channels, bridging the gap between the three-channel TDF8531 and the five-channel TDF8534.

Replacement Considerations

The TDF8532BHH serves as a lower-voltage alternative within the same family, rated for 18 V maximum supply. Designers should verify that the reduced voltage rating and slightly different THD+N specifications meet the system requirements when considering this substitute.

FAQ

Can two channels of the TDF8532 be combined to drive a lower impedance load?

Yes, two BTL channels can be combined to drive a 1 Ω load, providing increased power output for low-impedance speakers.

What digital input formats are supported by the TDF8532?

The device accepts digital input in TDM (Time Division Multiplexing) or I²S format, which facilitates easy board layout and synchronization.