PAM8303DBYC

Overview

The PAM8303DBYC is a mono Class-D audio power amplifier manufactured by Diodes Incorporated. It delivers 3W output at 10% THD+N with a 4Ω load and 5V supply, achieving up to 90% efficiency. The device operates on a 2.8V to 5.5V supply range and features ultra-low EMI performance, exceeding FCC Class-B limits by 20dB at 300MHz. It utilizes a filterless architecture requiring minimal external components. Protection mechanisms include short circuit protection and thermal shutdown. The component is housed in a U-DFN3030-8 package.

Feature Summary

• Filterless architecture eliminates the need for external output filters, reducing PCB area and system costs.
• Ultra-low electromagnetic interference (EMI) performance significantly reduces noise compared to standard regulatory limits.
• High power conversion efficiency of up to 90% extends battery life in portable devices.
• Integrated safety features including short circuit protection and thermal shutdown ensure reliable operation.

Applications

• Cellular phones and smart phones
• MP4/MP3 players
• GPS navigation devices
• Digital photo frames
• Electronic dictionaries
• Portable game machines

Procurement Notes

Verify the specific ordering suffix BYC corresponds to the U-DFN3030-8 package type and tape-and-reel quantity. Confirm RoHS compliance status and halogen-free certification requirements against current manufacturer specifications. Ensure the design accommodates the recommended operating temperature range and voltage limits specified in the datasheet.

Selection Notes

Select this component for applications requiring high efficiency and minimal external component count in space-constrained environments. The differential input structure helps reject common-mode noise. Consider the U-DFN3030-8 package for its small footprint. Verify that the target application does not require stereo output, as this is a mono amplifier.

Part Context

The PAM8303D series is designed for portable consumer electronics where battery life and board space are critical constraints. It serves as a high-performance alternative to traditional Class-AB amplifiers by offering superior efficiency without the complexity of output filtering. The product line includes variations in packaging to suit different assembly needs.

Replacement Considerations

The datasheet explicitly recommends using the PAM8304 as a replacement for new designs, noting that the U-DFN3030-8 package is not recommended for new designs. Verify pinout compatibility and electrical parameter equivalence before substituting.