DIOPAM8403
Overview
The PAM8403 is a 3W, stereo, Class-D audio amplifier designed for low-power portable applications. It operates from a 2.5V to 5.5V supply, making it ideal for USB-powered devices or lithium-ion battery systems. Its filterless architecture allows it to drive speakers directly, reducing the total bill of materials and board space.
Why Choose This Part
This amplifier achieves up to 90 percent efficiency, which extends battery life and eliminates the need for thermal management hardware. It features integrated short circuit protection and thermal shutdown to prevent damage during fault conditions. The filterless design provides low EMI and high fidelity audio with superior low noise performance.
Applications
Key Specifications
Getting Started
When designing a PCB for the PAM8403, place a 10uF decoupling capacitor as close to the VDD pin as possible to ensure stability. Use short, wide traces for speaker connections to minimize parasitic inductance and maintain low THD+N. For evaluation, various low-cost breakout boards are available that include the necessary input capacitors and gain-setting resistors.
Featured in Projects
Categories
