TDF8548TH/N1,118

Overview

The TDF8548TH/N1,118 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 and delivers an output power of 28 W per channel into a 4 Ω load at 14.4 V with 10% THD. The device features an asymmetrical input configuration and utilizes an HSOP36 package. It supports I²C-bus control for programmable diagnostics and gain settings.

Feature Summary

• Supports continuous sound experience during engine start/stop cycles by operating down to 6 V
• Includes Best Efficiency mode to reduce power dissipation compared to standard Class-AB operation
• Provides full diagnostic capabilities including clip detection, short circuit protection, and thermal warnings via I²C
• Features low pop performance for switch-on, standby, and mute transitions

Applications

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

Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm package type and marking variations. Confirm RoHS compliance status as datasheets may indicate non-compliance for certain variants. Check current availability status as automotive components frequently undergo lifecycle changes or obsolescence notices.

Selection Notes

Select this component when designing for stop/start vehicles requiring audio continuity during engine cranking. Choose the Best Efficiency mode variant if minimizing heat dissipation in correlated signal scenarios is critical. Ensure the design accommodates the 6 V to 18 V operating range and utilizes I²C interfaces for gain and diagnostic configuration.

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 28 W output power with an asymmetrical input configuration.

Replacement Considerations

Consider the TDF8548J or TDF8548SD for alternative DBS27 packaging options within the same functional family. Verify pin compatibility and thermal requirements when substituting between HSOP36 and DBS27 packages.