PAM8304AYR

Overview

The PAM8304AYR is a mono, filter-less Class-D audio amplifier manufactured by Diodes Incorporated. It operates on a single supply voltage ranging from 2.8V to 6.0V and delivers up to 3.0W of output power into a 4Ω load at 5V with 10% THD+N. The device features differential inputs for noise rejection, high efficiency exceeding 90%, and low shutdown current below 1μA. It includes short-circuit protection, thermal shutdown, and undervoltage lockout. The component is housed in a U-DFN3030-8 (Type E) package and supplied in tape and reel format.

Feature Summary

• Filter-less architecture minimizes external components and PCB area while maintaining high performance.
• Differential input configuration helps eliminate common-mode noise interference.
• Integrated protection mechanisms include short-circuit protection, thermal shutdown, and undervoltage lockout.
• Anti-pop and anti-click circuitry reduces turn-on and turn-off transients.

Applications

• MP4/MP3 players
• GPS navigation systems
• Set-top boxes
• Tablets and digital photo frames
• Electronic dictionaries

Procurement Notes

Verify the specific ordering suffix 'AYR' corresponds to the U-DFN3030-8 (Type E) package and Tape & Reel packing quantity of 3000 units as defined in the manufacturer's ordering information. Confirm that the component meets RoHS 3 compliance and is halogen-free. Ensure the supplier provides documentation verifying the part number matches the datasheet DS36611 Rev. 5 specifications before purchase.

Selection Notes

Select this component for portable applications requiring high efficiency and minimal board space due to its filter-less design. It is suitable for battery-powered devices operating between 2.8V and 6V. Consider the U-DFN3030-8 package for compact layouts. Ensure the application can accommodate the required decoupling capacitors and ferrite beads for optimal EMI performance and stability.

Part Context

The PAM8304 belongs to the PAM8304 series of mono Class-D audio amplifiers from Diodes Incorporated. This series is designed for portable multimedia applications where power efficiency and sound quality are critical. The AYR variant specifically denotes the U-DFN3030-8 package type, distinguishing it from other variants like the MSOP-8 version.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material. Consult the manufacturer or authorized distributors for cross-reference recommendations based on specific electrical and mechanical requirements.

FAQ

What is the function of the /SD pin?

The /SD pin is the shutdown terminal. Applying a logic low or ground to this pin puts the amplifier into standby mode, minimizing supply current consumption.

How does the PAM8304 handle overtemperature conditions?

The device incorporates overtemperature protection (OTP). If the internal die temperature exceeds +150°C, the device shuts down. It automatically restarts once the temperature decreases by 40°C.

Why is a filter-less architecture used in this amplifier?

The filter-less architecture minimizes the number of external components required, reducing PCB area and system cost while still providing high-performance audio output.