PAM8302LAYCR

Overview

The PAM8302LAYCR is a 2.5W Class-D mono audio amplifier manufactured by Diodes Incorporated, housed in an 8-DFN (3x3) package. It operates on a single supply voltage ranging from 2.0V to 5.5V and delivers up to 2.5W of output power at 10% THD with a 4Ω load and 5V supply. The device features a filterless architecture that eliminates the need for low-pass output filters, reducing PCB area and system cost. It achieves peak efficiency up to 88%, includes short circuit protection, thermal shutdown, and low quiescent current.

Feature Summary

• Filterless design allows direct speaker driving without external low-pass filters
• High efficiency up to 88% optimizes battery life for portable applications
• Integrated short circuit protection and thermal shutdown ensure operational safety
• Low quiescent current and low EMI characteristics support compact designs

Applications

• Portable media players and MP4 devices
• GPS navigation systems
• Portable speaker systems
• Walkie-talkie two-way radios
• Handsfree and speaker phones
• Cellular phones

Procurement Notes

Verify the specific ordering suffix 'Y' corresponds to the DFN3x3-8 package configuration as documented in the manufacturer's ordering information. Confirm that the standard package quantity aligns with the specified tape and reel unit count for this variant. Ensure compatibility with surface mount assembly processes suitable for the small outline footprint.

Selection Notes

Select this component when space constraints require a compact DFN package over MSOP alternatives. The filterless topology reduces bill of materials by eliminating output inductors and capacitors. Verify that the 2.0V to 5.5V supply range matches the target system voltage rails. Consider the thermal resistance characteristics of the DFN package for heat dissipation requirements in enclosed enclosures.

Part Context

This part belongs to the PAM8302L product line of Diodes Incorporated, designed specifically for high-efficiency audio amplification in portable electronics. The series offers multiple package options including MSOP-8 and DFN3x3-8 to accommodate different board layout needs. It serves as a direct replacement for traditional Class-AB amplifiers where size and power consumption are critical design factors.

Replacement Considerations

The PAM8302LASCR is a confirmed substitute within the same product family, offering identical electrical performance but utilizing an MSOP-8 package instead of the DFN3x3-8 form factor. Designers must account for the physical footprint differences during board layout modifications when switching between these package variants.

FAQ

Does the PAM8302LAYCR require an external low-pass filter?

No, the device utilizes a filterless design that allows it to directly drive speakers without the need for external low-pass output filters.

What is the maximum output power capability?

The amplifier delivers 2.5W of output power at 10% THD+N with a 4Ω load and a 5V power supply.

How does the device handle over-temperature conditions?

The PAM8302LAYCR incorporates thermal shutdown protection that activates when the junction temperature exceeds the specified limit, ensuring device safety.