TDF8599BTH/N1/S422

Overview

The TDF8599BTH/N1/S422 is a dual-channel Class-D audio amplifier designed for automotive and transportation applications. It operates with a supply voltage range of 8 V to 24 V and delivers a maximum stereo output power of 70 W into a 4 Ω load. The device utilizes Silicon-On-Insulator (SOI) BCDMOS technology, providing high efficiency and superior electromagnetic compatibility. It features I²C-bus control, hardware thermal protection, and differential inputs to minimize noise.

Feature Summary

• High-efficiency Class-D architecture utilizing SOI BCDMOS technology for low quiescent current and reduced heat dissipation.
• Advanced EMI mitigation through phase staggering, BD modulation, frequency hopping, and spread spectrum techniques.
• Integrated I²C-bus interface enabling smart diagnostics, clip detection, and system assembly verification.
• Differential input configuration designed to reduce noise and ensure high sound quality in noisy environments.

Applications

• Automotive head units
• Automotive sound systems
• Consumer HiFi docking stations or sound bars
• Public announce systems

Procurement Notes

Verify the specific ordering suffix against official NXP documentation to confirm package type and reel specifications. Ensure compliance with AEC-Q100 automotive qualification requirements for your target application environment. Confirm RoHS status and lead-free availability prior to procurement to meet regulatory standards.

Selection Notes

Select this model when a 24 V maximum supply voltage is required, distinguishing it from the 35 V TDF8599A and 48 V TDF8599C variants. Choose based on the 70 W stereo power requirement at 4 Ω loads. Consider the HSOP36 package constraints for PCB layout and thermal management solutions suitable for the specified power levels.

Part Context

Part of the TDF8599x family of dual-channel high-power Class-D amplifiers. Shares core SOI technology and diagnostic features with TDF8599A and TDF8599C models. Differentiated primarily by its lower maximum supply voltage rating and corresponding output power capabilities compared to higher-voltage siblings.

Replacement Considerations

TDF8599ATH/N1: Higher voltage support up to 35 V with increased power output. TDF8599CTH/N1: Supports up to 48 V supply for higher power applications. Verify pinout compatibility and thermal requirements when substituting within the TDF8599 series.

FAQ

What technology is used for the output stage?

The amplifier uses an NDMOST-NDMOST output stage based on Silicon-On-Insulator (SOI) BCDMOS technology.

Does the device include thermal protection?

Yes, it features hardware-controlled thermal foldback and protection mechanisms.