PAM8404

Document number: DSxxxxx Rev. 1 - 1

1 of 18

www.diodes.com

November 2012

© Diodes Incorporated

PAM8404

A Product Line of

Diodes Incorporated

3W/CH FILTERLESS STEREO CLASS-D AUDIO AMPLIFIER

Description

The PAM8404 is a 3W high efficiency filterless Class-D audio

amplifier in 4mmX4mm and 2mmX2mm wafer chip scale (WCSP)

packages that requires few external components.

Features like 89% efficiency, -63dB PSRR, improved RF-rectification

immunity, and very small PCB area make the PAM8404 Class-D

amplifier ideal for cellular handset and PDA applications.

In cellular handsets, the earpiece, speaker phone, and melody ringer

can each be driven by the PAM8404. The PAM8404 allows

independent gain by summing signals from seperate sources, and

has as low as 43µV noise floor.

PAM8404 is available in QFN 4mmx4mm and WCSP 2mmx2mm

packages.

Features



3W Output at 10% THD with a 4Ω Load and 5V Supply



Supply Voltage from 2.5V to 5.5V



Efficiency Up to 89%



Superior Low Noise without Input



Few External Components to Save the Space and Cost



Short Circuit Protection



Thermal Shutdown



Space Saving Packages :



2mm X 2mmWCSP



4mm X 4mm Thin QFN



Pb-Free Packages

Applications



LCD Monitor / TV Projector



Notebook Computers



Portable Speakers



Portable DVD Players, Game Machines



Cellular Phones/Speaker Phones

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