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PAM8403 (NRND)

NRND = Not Recommended for New Design

3W Stereo Class D

Datasheet

Evaluation Boards and User Guides

PAM8403-User-Guide.pdf (1.1 MB)

Contact Sales

Description

The PAM8403 is a 3W, class-D audio amplifier. It offers low THD+N, allowing it to achieve high-quality sound reproduction. The new filterless architecture allows the device to drive the speaker directly, requiring no low-pass output filters, thus saving system cost and PCB area. With the same numbers of external components, the efficiency of the PAM8403 is much better than that of Class-AB cousins. It can extend the battery life, which makes it well-suited for portable applications. The PAM8403 is available in SOP-16 package.

Feature(s)

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

Filterless, Low Quiescent Current and Low EMI

Low THD+N

Superior Low Noise

Efficiency up to 90%

Short Circuit Protection

Thermal Shutdown

Few External Components to Save the Space and Cost

Pb-Free Package

Application(s)

LCD Monitors / TV Projectors

Notebook Computers

Portable Speakers

Portable DVD Players, Game Machines

Cellular Phones/Speaker Phones

Specifications & Technical Documents

Product Parameters

Anti-Sat	N/A
BTL	N/A
Class-D or AB	D
Efficiency (%)	87
Gain Max	24
Gain Min	N/A
Headphone Out	N/A
I_{Q (mA)}	8
Maximum V_DD (V)	5.5
Minimum V_DD (V)	2.5
Mono or Stereo	Stereo
Power Limit	N/A
Power/CH (W) @ THD=1%	2.56
Power/CH (W) @ THD=10%	3.2
PSRR	-58
AEC Qualified	No
SE	N/A
SNR	80
Special Features	N/A
Volume/ Gain	Fixed

Technical Documents

Evaluation Boards and User Guides

PAM8403-User-Guide.pdf (1.1 MB)

Recommended Soldering Techniques

TN1.pdf

Purchase & Availability

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Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN #	Issue Date	Implementation Date	Subject
PCN-2770	2025-10-30	2025-10-30	Add Fab Site Code, Country of Diffusion (COD) and Assembly Site Origin (ASO) on Product and Shipping Labels for all Diodes Products
PCN-2512	2021-04-16	2021-07-16	Qualified Additional Assembly & Test (A/T) Site