PAM8301AAF

Overview

The PAM8301AAF is a Class-D mono audio amplifier manufactured by Diodes Incorporated, housed in an SOT-23-6 package. It delivers 1.5W output power at 10% THD+N with an 8Ω load and 5V supply. The device operates on a supply voltage range of 2.5V to 5.5V and functions within a temperature range of -40°C to +85°C. Key electrical specifications include a quiescent current of 4mA (typical), peak efficiency up to 88%, and a fixed gain of 24dB.

Feature Summary

• Filterless architecture enables direct speaker driving without low-pass output filters, reducing system cost and PCB area.
• Integrated protection mechanisms include short circuit protection and thermal shutdown to ensure operational reliability.
• Low quiescent current and high efficiency optimize battery life for portable applications.
• Shutdown feature minimizes supply current draw when the SD pin is set to logic low.

Applications

• Portable media players (PMP/MP4)
• GPS navigation devices
• Portable speakers
• Walkie-talkies
• Handsfree and speaker phones

Procurement Notes

Verify component authenticity through authorized Diodes Incorporated channels. Confirm RoHS compliance status via official documentation. Check datasheet revision history for updates. Ensure storage conditions respect moisture sensitivity levels. Validate package marking against ordering information.

Selection Notes

Evaluate input capacitor selection carefully as it impacts low-frequency response and DC offset. Consider power supply decoupling requirements using ceramic and bulk capacitors to minimize noise. Assess EMI mitigation strategies such as ferrite beads if traces are long. Verify gain configuration limits based on external resistor ratios.

Part Context

This component belongs to the PAM8301 series of filterless Class-D mono audio amplifiers. It is designed for portable electronics requiring high efficiency and minimal external components. The SOT-23-6 package provides a compact solution for space-constrained designs.

Replacement Considerations

The datasheet explicitly recommends using PAM8013 or PAM8304 instead of this part for new designs.

FAQ

What is the maximum closed-loop gain achievable?

The maximum closed-loop gain is 24dB, determined by the ratio of external feedback resistors RF and RI.

How does the shutdown function operate?

Applying a logic low signal to the SHUTDOWN pin turns off the amplifier, minimizing supply current draw in idle mode.