PAM8004DR

Overview

The PAM8004DR is a stereo Class-D audio amplifier manufactured by Diodes Incorporated in an SOP-16L package. It delivers 2.5W output at 10% THD+N with a 4Ω load and 5V supply, or 3W into a 3Ω load. The device operates on a 2.5V to 5.5V supply range within -40°C to +85°C temperatures. Key electrical parameters include a quiescent current of 7mA max at 5V, shutdown current of 1µA, and switching frequency of 210kHz. It features low THD+N (0.16% typ), high PSRR (-70dB), and includes short circuit and thermal protection.

Feature Summary

• Filterless architecture eliminates the need for external low-pass output filters, reducing system cost and PCB area.
• High efficiency compared to Class-AB amplifiers, extending battery life in portable applications.
• Integrated protection mechanisms including thermal shutdown and short circuit protection.
• Low quiescent current and automatic standby control for optimized power management.

Applications

• Portable speakers
• LCD monitors and televisions
• Notebook computers
• Portable DVD players and game machines

Procurement Notes

Verify the specific ordering suffix DR against the manufacturer's official documentation to confirm the SOP-16L package type and tape-and-reel packaging configuration. Ensure compatibility with standard surface-mount assembly processes. Confirm that the component meets all relevant environmental compliance standards required for the target market before finalizing procurement orders.

Selection Notes

Select this component when a filterless stereo solution is required to minimize bill-of-materials costs and board space. It is suitable for designs operating between 2.5V and 5.5V where moderate output power up to 3W is sufficient. Consider the thermal resistance characteristics of the SOP-16L package for adequate heat dissipation in enclosed enclosures without active cooling.

Part Context

The PAM8004 belongs to the PAM800x series of audio amplifiers from Diodes Incorporated. This family focuses on high-efficiency Class-D technology designed for portable consumer electronics. The PAM8004 specifically targets stereo applications requiring direct speaker drive capabilities without complex output filtering networks.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.

FAQ

How does the PAM8004 handle over-temperature conditions?

The device incorporates thermal protection that disables outputs if the internal die temperature exceeds approximately 140°C. The fault clears automatically once the temperature drops by about 30°C.

What is the purpose of the Analog Reference Bypass Capacitor?

The bypass capacitor on the VREF pin determines the startup rate during recovery from shutdown and reduces noise coupling from the power supply into the output drive signal, improving PSRR and THD+N performance.