TDF8548SD/N1,112

Overview

The TDF8548SD/N1,112 is a quad Class-AB audio amplifier designed for automotive infotainment systems. It operates within a supply voltage range of 6 V to 18 V, supporting stop/start vehicle functionality. The device delivers an output power of 28 W per channel into a 4 Ω load at 14.4 V with 10% THD. It features asymmetrical input configuration and includes Best Efficiency mode capabilities to reduce power dissipation compared to standard Class-AB operation.

Feature Summary

• Supports continuous sound experience during engine start/stop cycles by operating down to 6 V
• Includes Best Efficiency mode to significantly reduce power dissipation in correlated and uncorrelated signal scenarios
• Provides comprehensive diagnostics including programmable clip detection, thermal pre-warning, and DC/AC load detection
• Features independent short-circuit protection per channel and thermal protection to prevent breakdown

Applications

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

Procurement Notes

Verify the specific ordering suffix N1,112 against official documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with existing PCB footprints for HSOP36 or DBS27 packages as applicable. Confirm RoHS compliance status and check for any product change notices related to this specific part number variant before finalizing procurement plans.

Selection Notes

Select this component when designing automotive audio systems requiring high efficiency and robust diagnostic feedback. The Best Efficiency mode is suitable for applications needing reduced heat dissipation. Choose this over I²C-only variants if asymmetric input configuration and 28 W output power are required. Ensure the design supports the necessary I²C bus control lines for accessing advanced diagnostic features.

Part Context

This part belongs to the TDF854x family of NXP 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 28 W output power with asymmetrical inputs, distinguishing it from the 25 W TDF8546 and other family members.

Replacement Considerations

The TDF8548J/JS/SD and TDF8548TH* are alternative package options within the same functional family. Verify pinout compatibility between HSOP36 and DBS27 packages if considering physical substitution.