PAM8620TR

Overview

The PAM8620TR is a stereo Class-D audio power amplifier manufactured by Diodes Incorporated. It delivers up to 30W per channel into an 8Ω load at 24V supply during music playing, or 20W continuous power into 4Ω or 8Ω loads. The device operates on a single supply voltage ranging from 8V to 26V. Key electrical characteristics include a total harmonic distortion plus noise (THD+N) of 0.12% at 7.5W output into 8Ω, and a signal-to-noise ratio of 90dB. It features low quiescent current and integrated protection mechanisms.

Feature Summary

• Delivers high-efficiency stereo audio amplification with over 90% efficiency ratings.
• Incorporates non-clip power limiting functionality to maintain sound quality under constrained conditions.
• Features comprehensive protection including thermal shutdown, short-circuit protection, and overvoltage lockout.
• Includes pop noise suppression and shutdown/mute functions for optimized user experience.

Applications

• Flat monitors
• LCD TVs
• Multi-media speaker systems
• DVD players
• Game machines

Procurement Notes

Verify the specific package type W-QFN5050-32 matches your PCB footprint requirements. Confirm that the Tape & Reel packing quantity aligns with your manufacturing line capacity. Ensure the component meets RoHS compliance standards required for your target market regulations before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring high output power in a compact form factor. The differential input stage helps eliminate common-mode noise effectively. Consider the external component count reduction benefits for cost-sensitive designs. Verify that the operating temperature range suits the intended deployment environment.

Part Context

This part belongs to the PAM8620 series of audio amplifiers. It is designed as a direct replacement for legacy stereo Class-D solutions requiring higher power density. The device integrates analog and digital control circuits within a single small outline package to minimize board space usage.

Replacement Considerations

Check pin compatibility if substituting other stereo Class-D amplifiers. Verify that the thermal resistance characteristics match the existing heatsinking strategy. Ensure the bootstrap capacitor requirements are compatible with the new design constraints.

FAQ

How does the power limit function work?

The PL pin allows users to set a voltage threshold using a resistor divider. If the output power exceeds this setting, the amplifier automatically reduces gain to prevent clipping while maintaining sound quality.

What is the recommended startup sequence?

To achieve the best power-off pop performance, the amplifier should be placed in shutdown mode prior to removing the power supply voltage. The SD pin must never be left unconnected.