PAM8303CBYC-DB

Overview

The PAM8303CBYC is a mono, filterless Class-D audio power amplifier manufactured by Diodes Incorporated. It delivers 3W output power at 10% THD+N with an 8Ω load at 5V supply voltage. The device operates within a supply voltage range of 2.8V to 5.5V and features ultra-low EMI performance, exceeding FCC Class-B standards by 20dB at 300MHz. It incorporates high efficiency up to 90%, short-circuit protection, thermal shutdown, and a shutdown current below 1µA. The component is housed in a U-DFN3030-8 package.

Feature Summary

• Filterless architecture eliminates the need for external output LC filters, reducing PCB area and system costs.
• Ultra-low electromagnetic interference (EMI) performance significantly reduces noise compared to standard regulatory limits.
• Integrated protection mechanisms include short-circuit protection and thermal shutdown to ensure device reliability.
• High power supply ripple rejection (PSRR) and differential input structure minimize noise and RF rectification.

Applications

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

Procurement Notes

Verify the specific ordering suffix 'BYC' corresponds to the U-DFN3030-8 package configuration as documented in the manufacturer's ordering information table. Confirm that the component status is acceptable for your design lifecycle, noting that this datasheet indicates the part is not recommended for new designs and suggests using the PAM8304 instead. Ensure compliance with RoHS and halogen-free requirements if applicable to your manufacturing process.

Selection Notes

Select this component when a compact, single-channel audio solution is required for battery-powered portable electronics. The filterless design simplifies the bill of materials by removing external inductors and capacitors typically needed for Class-D amplifiers. Consider the U-DFN3030-8 package for applications requiring minimal footprint. Evaluate the 2.8V to 5.5V operating range against your system's power supply rails to ensure adequate headroom for the desired output power levels.

Part Context

The PAM8303C series is designed for portable consumer electronics where space and power efficiency are critical constraints. It belongs to the family of filterless Class-D audio amplifiers from Diodes Incorporated. The CBYC variant specifically denotes the U-DFN3030-8 surface-mount package option. This series targets mobile communication devices and multimedia players requiring high-quality audio output with minimal external component count.

Replacement Considerations

The datasheet explicitly recommends using the PAM8304 as an alternative for new designs. Verify pin compatibility and electrical specifications between the PAM8303CBYC and the PAM8304 before substitution. No other substitute part numbers are confirmed in the provided documentation.