TDF8546TH/N1,518

Overview

The TDF8546TH/N1,518 is a quad Class-AB audio power 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 25 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 diagnostics and includes Best Efficiency mode capabilities.

Feature Summary

• Supports continuous sound experience during engine start in stop/start vehicles by operating down to 6 V
• Includes full startup diagnostics with flexible read-out and programmable diagnostic pins
• Optimized for low pop performance with guaranteed switch-on pop reduction
• Features second clip-detect pin for additional front/rear detection

Applications

• Automotive infotainment systems
• Stop/start car audio applications
• Quad Class-AB amplifier designs

Procurement Notes

Verify the specific ordering suffix N1,518 against official documentation to confirm exact packaging and reel specifications. Ensure compatibility with the HSOP36 package type and asymmetrical input configuration required for your design. Cross-reference the part number with the manufacturer's current product status to confirm availability and lifecycle stage before finalizing procurement plans.

Selection Notes

Select this component when designing automotive audio systems requiring operation down to 6 V for stop/start functionality. Choose the TDF8546TH variant for its 25 W output power and asymmetrical input configuration housed in an HSOP36 package. Consider the integrated Best Efficiency mode if reduced dissipation compared to standard Class-AB amplifiers is required for thermal management.

Part Context

The TDF8546TH/N1,518 belongs to the NXP TDF854x family of quad Class-AB amplifiers intended for automotive use. This family offers graduated output power options and supports both I²C-bus control and Best Efficiency modes. The TH suffix indicates the HSOP36 package variant, distinguishing it from the DBS27 package versions within the same functional family.

Replacement Considerations

TDF8541TH/N1,518: Same package and power but symmetrical input. TDF8544TH/N1,518: Higher power (28W) with asymmetrical input. TDF8546J/N1,518: Same function but different DBS27 package.