TDF8548ATH/N1J

Overview

The TDF8548ATH/N1J is a four-channel Class AB audio power amplifier manufactured by NXP USA Inc. It operates within a supply voltage range of 6V to 18V and delivers up to 28W per channel into a 4-ohm load. The device is housed in a 36-HSOP package with exposed pad for thermal management. Key integrated features include pop-and-click suppression, short-circuit protection, and thermal shutdown to ensure robust operation in automotive environments.

Feature Summary

• Four-channel Class AB architecture for multi-speaker audio systems
• Integrated pop-and-click suppression for silent startup and shutdown
• Built-in short-circuit and thermal protection mechanisms

Applications

• Connected radio infotainment systems
• Automotive AM/FM tuner modules
• Multi-zone car audio amplification

Procurement Notes

Verify component status as the TDF8548ATH/N1J is listed as obsolete with an end-of-life date in December 2016. Confirm availability through authorized distributors or surplus channels. Ensure compatibility with existing PCB footprints and thermal designs when sourcing replacements or managing legacy inventory.

Selection Notes

Select this component for applications requiring a compact, four-channel solution with integrated protection features. The HSOP36 package suits space-constrained automotive designs. Consider the obsolete status when planning long-term production runs and evaluate alternative amplifiers from the same family if future supply stability is required.

Part Context

This amplifier belongs to the TDF854x series of I2C-controlled power amplifiers designed for automotive use. It complements other NXP audio and processing solutions like the SAF9000 radio processor. The series targets scalable infotainment systems, offering high efficiency and reliability for vehicle audio networks.

Replacement Considerations

Check for pin-compatible alternatives within the TDF854x family. Verify that any substitute maintains the 36-HSOP package and supports the required 6V-18V operating range. Ensure equivalent thermal and protection characteristics are present.