PAM8009KGR

Overview

The PAM8009KGR is a highly integrated audio amplifier combining a 3W Class-D stereo power amplifier for bridged-tied load (BTL) speakers with a Class-AB headphone driver. It operates within an input voltage range of 2.8V to 5.5V and achieves up to 90% efficiency. The device features digital control with 64 volume steps spanning +20dB to -60dB, alongside mute and standby modes. It includes Auto Gain Control (AGC), thermal protection, over-current protection, and under-voltage shutdown. Packaged in U-DFN4040-20.

Feature Summary

• Integrates a 3W Class-D stereo amplifier and a Class-AB headphone driver in a single solution
• Provides full audio system control via 64-step digital volume adjustment, mute, and standby functions
• Includes enhanced protection mechanisms such as Auto Gain Control, thermal limiting, and under-voltage shutdown

Applications

• LCD monitors and televisions
• Projectors
• Computing devices and all-in-one computers
• Game machines
• DVD players

Procurement Notes

Verify the specific package marking and reel specifications against official Diodes Incorporated documentation before procurement. Confirm that the U-DFN4040-20 footprint matches the target PCB layout. Ensure supply chain sources provide authentic components with valid traceability records to maintain system reliability and performance standards.

Selection Notes

Select this component when a compact solution is required for both speaker output and headphone driving. The integrated digital volume control reduces external component count compared to analog alternatives. Consider the U-DFN4040-20 package for space-constrained designs requiring high thermal efficiency and robust protection features for consumer electronics.

Part Context

The PAM8009KGR belongs to the PAM8009 product family from Diodes Incorporated. It shares core functional specifications with the PAM8009DHR variant, differing primarily in packaging. While the DHR version utilizes an SOP-24 package, the KGR variant employs a U-QFN4040-20 package, offering different thermal and spatial characteristics for board integration.

Replacement Considerations

The PAM8009DHR serves as a direct functional alternative within the same series, offering identical electrical performance but utilizing an SOP-24 package instead of the U-DFN4040-20 form factor. Verify mechanical compatibility and thermal management requirements when substituting between these package types.