TPA3121D2PWP

Overview

The TPA3121D2PWP is a stereo Class-D audio power amplifier manufactured by Texas Instruments. It delivers 15 W of continuous output power into a 4-ohm load and operates within a supply voltage range of 10 V to 26 V. The device features a fixed gain of 36 dB and achieves a total harmonic distortion plus noise (THD+N) of 0.04%. It utilizes a single-ended architecture with HTSSOP-24 packaging, supporting surface-mount installation across an operating temperature range of -40°C to +85°C.

Feature Summary

• Eliminates the need for external LC output filters through its single-ended architecture, reducing bill of materials and board space.
• Operates at greater than 90% efficiency, removing the requirement for heat sinks in typical applications.
• Integrates comprehensive protection mechanisms including pop-and-click suppression, mute functionality, short-circuit protection, and thermal shutdown.

Applications

• LCD HDTV audio systems
• Home theater amplifiers
• Portable speaker designs

Procurement Notes

Verify the specific suffix against official documentation to confirm package type and reel specifications. Ensure compatibility with existing 24-V backlight rails if targeting television applications. Confirm moisture sensitivity level handling requirements during assembly. Validate that the selected variant matches the required channel configuration and thermal performance standards.

Selection Notes

Select this component when designing stereo audio solutions requiring high efficiency without external filtering components. It is suitable for systems utilizing standard 24-V power rails, eliminating the need for dedicated power supplies. Consider the fixed 36 dB gain and single-ended output topology when matching input signal levels and speaker impedances.

Part Context

This part belongs to the TPA3121D2 series of Class-D audio amplifiers. It shares architectural similarities with the TPA3124D2 but differs in specific output configurations. The family focuses on cost reduction and board area optimization for consumer electronics manufacturers seeking efficient audio amplification.

Replacement Considerations

TPA3121D2PWPR serves as the tape-and-reel alternative to the tube-packaged PWP version. Verify that the suffix change strictly affects packaging and does not alter electrical characteristics or pinout assignments.