PAM8304

Document number: DS36589 Rev. 1 - 2

1 of 11

www.diodes.com

October 2013

© Diodes Incorporated

PAM8304

A Product Line of

Diodes Incorporated

3W MONO CLASS D AUDIO AMPLIFIER

Description

The PAM8304 is a mono filter-less Class-D amplifier with high SNR

and differential input that helps eliminate noise. The PAM8304

supports 2.8V to 6V operation make it idea for up to 4 cells alkaline

battery applications. The PAM8304 is capable of driving speaker

loads as low as 3Ω speaker with a 5V supply maximizing the output

power.

Features like greater than 90% efficiency and small PCB area make

the PAM8304 Class-D amplifier ideal for portable applications. The

output uses a filter-less architecture minimizing the number of

external components and PCB area whilst providing a high

performance, simple and lower cost system.

The PAM8304 features short circuit protection, thermal shutdown and

under voltage lock-out.

The PAM8304 is available in DFN3030-8L and MOP-8L packages.

Features



Supply Voltage from 2.8V to 6.0 V



3Ω Driving Capability



3.0W@10% THD Output with a 4Ω Load and 5V Supply



High Efficiency up to 90% @1W with an 8Ω Load



Shutdown Current <1μA



Superior Low Noise without Input



Short Circuit Protection



Thermal Shutdown



Available in Space Saving DFN3030-8L and MSOP-8L

Packages



Pb-Free Package

Pin Assignments

MSOP-8L

Top View

DFN3X3-8L

Top View

1

2

3

4

5

6

7

8

OUT+

PVDD

VDD

IN-

IN+

SD

GND

OUT-

1

2

3

4

5

6

7

8

OUT+

PVDD

VDD

IN-

IN+

SD

GND

OUT-

Applications



MP4/MP3



GPS



Set-Top-Box



Tablets/Digital Photo Frame



Electronic Dictionary



Portable Game Machines

Typical Applications Circuit

OU T-

OU T +

VD D

0.1 F

μ

VI N

GN D

IN+

PA M 8304

IN -

/S D

0.1 F

μ

1F

μ

PV D D

PGN D

V DD

/S D