TDF8548J/N1,112

Overview

The TDF8548J/N1,112 is a quad Class-AB audio power amplifier designed for automotive infotainment systems. It delivers 28W output power per channel into a 4-ohm load at 14.4V with 10% THD. The device operates within a wide supply voltage range of 6V to 18V, supporting continuous audio during engine start/stop cycles. It features an asymmetrical input configuration and includes Best Efficiency mode capabilities.

Feature Summary

• Supports continuous audio operation in stop/start vehicles by functioning across a 6V to 18V supply range
• Integrates Best Efficiency mode to reduce power dissipation compared to standard Class-AB amplifiers
• Provides comprehensive diagnostic outputs including programmable clip detection and thermal pre-warning
• Ensures robust protection against short circuits to ground, supply, and across the load

Applications

• Automotive infotainment systems
• Stop/start vehicle audio architectures
• Quad-channel car audio amplification

Procurement Notes

Verify the specific ordering suffix /N1,112 against manufacturer documentation to confirm package type and tape-and-reel specifications. Confirm RoHS compliance status and REACH registration details prior to integration. Ensure design compatibility with I2C bus control requirements and verify pinout alignment with the HSOP36 or DBS27 footprint as applicable.

Selection Notes

Select this component when designing for asymmetric input configurations requiring 28W per channel performance. Consider the Best Efficiency mode if minimizing heat dissipation is critical for the enclosure design. Verify that the system can accommodate the required I2C control interface and diagnostic read-out capabilities for fault monitoring.

Part Context

This part belongs to the NXP TDF854x family of quad Class-AB amplifiers. The family includes variants with I2C control (TDF8541, TDF8542, TDF8544) and those with Best Efficiency mode (TDF8546, TDF8548). The TDF8548 specifically offers higher output power than the TDF8546 variant within the efficiency-focused segment.

Replacement Considerations

The TDF8548TH* serves as a functional equivalent within the same family, offering identical electrical characteristics but housed in an HSOP36 package with opposite input/output pin configurations.