Diodes Incorporated

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PAM8303C (Not Recommended for new design)

NRND = Not Recommended for New Design

3W Mono Class D

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The PAM8303C is a 3W mono filterless Class-D amplifier with high PSRR and differential input that eliminate noise and RF rectification. Features like 90% efficiency and small PCB area make the PAM8303C Class-D amplifier ideal for cellular handsets. The filterless architecture requires no external output filter, fewer external components, less PCB area and lower system costs, and simplifies application design. The PAM8303C features short circuit protection and thermal shutdown. The PAM8303C is available in 9-ball WCSP, MSOP-8 and DFN 3x3 8-pin packages.


  • Ultra Low EMI, -20dB Better Than FCC Class-B @ 300MHz
  • High Efficiency up to 90% @1W with an 8Ω Speaker
  • Shutdown Current <1μA
  • 3W@10% THD Output with a 4Ω Load at 5V Supply
  • Demanding Few External Components
  • Superior Low Noise without Input
  • Supply Voltage from 2.8V to 5.5V
  • Short Circuit Protection
  • Thermal Shutdown
  • Available in Space Saving Packages: 1.45mmx1.45mm WCSP9, MSOP-8, DFN3x3-8
  • Pb-Free Package


  • Cellular Phones/Smart Phones
  • MP4/MP3
  • GPS
  • Digital Photo Frame
  • Electronic Dictionary
  • Portable Game Machines

Product Specifications

Product Parameters

Anti-Sat No
Compliance (Only Automotive supports PPAP) No
Class-D or AB D
Efficiency (%) 90
Gain Max 300k?/RI
Gain Min N/A
Headphone Out No
IQ (mA) 7.5
Maximum VDD (V) 5.5
Minimum VDD 2.8
Minimum VDD (V) 2.8
Mono or Stereo Mono
Power Limit No
Power/CH (W) @ THD=1% 2.4
Power/CH (W) @ THD=10% 3
AEC Qualified No
Special Feature N/A
Volume/ Gain Rin adjustable

Related Content


Technical Documents

Recommended Soldering Techniques


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-2512 2021-04-16 2021-07-16 Qualified Additional Assembly & Test (A/T) Site