TAS5624ADDV

Overview

The TAS5624ADDV is a high-performance PurePath™ HD digital input Class-D power stage from Texas Instruments, serving as the thermal-enhanced version of the TAS5614A. It utilizes a PWM digital input architecture with integrated on-chip feedback in a 44-pin HTSSOP (DDV) package with exposed pad. In bridge-tied load (BTL) stereo mode, it delivers 2×150W output at 10% THD+N into 4Ω loads. In parallel bridge-tied load (PBTL) mono mode, it provides up to 300W into 2Ω. At 1% THD+N, it outputs 2×125W (4Ω BTL) or 1×250W (2Ω PBTL). The device operates with a supply voltage range of 12V to 38V and features low static current consumption.

Feature Summary

• Integrates PurePath™ HD closed-loop feedback technology to achieve ultra-low distortion and high power supply rejection ratio, ensuring output voltage depends solely on the audio input signal regardless of power fluctuations.
• Features large MOSFETs with low on-resistance and an advanced gate drive scheme to minimize static and low-output signal losses, resulting in power stage efficiency exceeding 90%.

Applications

• Home theater systems
• AV receivers
• Soundbars
• Active subwoofers

Procurement Notes

Verify the specific ordering suffix when sourcing components. The TAS5624ADDV typically denotes tube packaging, whereas the TAS5624ADDVR variant indicates tape and reel packaging for automated surface-mount production. Confirm the required packaging format aligns with your assembly line capabilities before procurement to ensure compatibility with manufacturing processes.

Selection Notes

Select this component for designs requiring high-power digital input amplification with minimal external filtering. The integrated feedback loop simplifies design by reducing sensitivity to power supply noise. Ensure the PCB layout strictly follows TI's recommended guidelines to manage thermal dissipation effectively, given the high power density and the necessity of the exposed pad connection for heat transfer.

Part Context

This device belongs to the TAS5624A series, which represents a generation of high-efficiency digital audio power stages. It is specifically engineered as an improved thermal variant of the TAS5614A, offering enhanced heat dissipation capabilities within the same functional framework. The series is designed to support high-fidelity audio reproduction in compact form factors suitable for modern consumer electronics.

Replacement Considerations

The TAS5614A is the primary predecessor model. While functionally similar, the TAS5624ADDV offers improved thermal performance. Verify pinout compatibility and thermal requirements when substituting, as the enhanced heat dissipation may allow for smaller heatsinks but requires careful attention to PCB copper area for optimal thermal management.