TDF8590TH/N1,118

Overview

The TDF8590TH is a high-efficiency Class-D audio power amplifier designed for car audio systems. It delivers 2 × 80 W into 4 Ω in Single-Ended (SE) mode or 160 W into 8 Ω in Bridge-Tied Load (BTL) mode. The device operates on a wide supply voltage range of ±14 V to ±29 V with low quiescent current. It features zero dead time switching, advanced output current protection, and thermal foldback. The amplifier supports differential inputs and includes mute, standby, and diagnostic functions.

Feature Summary

• Zero dead time switching for high efficiency
• Advanced output current protection with thermal foldback
• No DC offset induced pop noise at mode transitions
• Differential inputs with selectable SE or BTL configurations

Applications

• Car audio systems
• High-fidelity stereo amplification
• Mono bridge-tied load speaker driving

Procurement Notes

Verify the specific ordering suffix N1,118 against the manufacturer's official documentation to confirm package type and reel specifications. Ensure compatibility with HSOP24 mounting requirements. Confirm that the component meets the required automotive environmental standards if used in vehicle applications. Cross-reference the part number with the latest datasheet revision to validate all electrical parameters before integration.

Selection Notes

Select this amplifier for applications requiring high output power within a compact form factor. Consider the fixed gain settings of 26 dB for SE and 32 dB for BTL modes when designing the input stage. Evaluate the thermal resistance characteristics to determine if an external heat sink is necessary based on the expected ambient temperature and load conditions. Ensure the power supply can handle the peak current demands during operation.

Part Context

The TDF8590TH belongs to the TDF859X series of digital audio power amplifiers from NXP Semiconductors. It utilizes Class-D technology to achieve high efficiency and low distortion. The device integrates two independent amplifier channels capable of operating as dual single-ended amplifiers or a single mono bridge-tied load amplifier. It is housed in an HSOP24 plastic package with a small internal heatsink.

Replacement Considerations

Consult the manufacturer's official replacement guide for verified substitute part numbers. Ensure any alternative component matches the HSOP24 package dimensions and pinout configuration. Verify that the replacement device supports the same supply voltage range and output power capabilities.