PAM8019KGR

Overview

The PAM8019KGR is a stereo audio amplifier manufactured by Diodes Incorporated, housed in a U-QFN4040-20 package. It integrates a 3W Class D amplifier for bridged-tied speakers and a Class AB headphone driver. The device operates on a supply voltage range of 2.8V to 5.5V with a maximum quiescent current of 7mA at 5V. It features a 64-step DC volume control providing a gain range from +20dB to -60dB. Output power reaches 3.0W into a 4Ω load or 1.7W into an 8Ω load at 10% THD+N. Additional functions include non-clip power limiting, programmable undervoltage protection, and thermal/overcurrent protection.

Feature Summary

• Integrates a 3W Class D amplifier for speaker driving alongside a dedicated Class AB amplifier for headphones.
• Includes a 64-step DC volume control mechanism that minimizes external component requirements.
• Features Non-Clip Power Limit (NCPL) technology to suppress output clipping and protect connected speakers.
• Provides programmable undervoltage protection (UVP) to eliminate speaker pop noise during power transitions.

Applications

• LCD monitors and televisions
• Projectors and all-in-one computers
• Portable and active speakers
• Portable DVD players and game machines

Procurement Notes

Verify the specific ordering suffix 'KGR' corresponds to the U-QFN4040-20 package and tape-and-reel packing quantity of 3000 units. Confirm compliance with RoHS 3 and Halogen-free standards as defined by Diodes Incorporated. Ensure design compatibility with the recommended operating conditions, specifically the 2.8V to 5.5V supply voltage range and ambient temperature limits.

Selection Notes

Select this component when a combined solution for both speaker and headphone outputs is required within a single IC. The integrated 64-step DC volume control simplifies interface design compared to analog potentiometer solutions. Consider the NCPL feature if speaker protection against clipping is a priority. Verify that the U-QFN4040-20 package dimensions fit the available PCB space constraints.

Part Context

The PAM8019KGR is part of the PAM8019 series of audio amplifiers produced by Diodes Incorporated. It utilizes a CMOS process to achieve high efficiency and low power consumption. The device is designed for portable consumer electronics requiring high-quality audio reproduction with minimal external circuitry. It supports both mono and stereo configurations depending on the application wiring.

Replacement Considerations

Diodes Incorporated explicitly states that the PAM8019 is not recommended for new designs. The datasheet recommends using the PAM8019E as the replacement for new projects. Engineers should evaluate the PAM8019E for updated specifications and long-term availability before proceeding with procurement.

FAQ

How does the Non-Clip Power Limit (NCPL) function operate?

When the output reaches the maximum power setting value, the NCPL circuits automatically decrease the gain to prevent the output waveform from clipping. This helps maximize audio performance and protects the speakers from damage.

What is the purpose of the UVP pin?

The Undervoltage Protection (UVP) pin allows users to shut down the PAM8019 at a pre-determined voltage level. This function helps eliminate speaker pop noise by shutting down the amplifier before the power supply collapses.

How is the output mode selected between speaker and headphone?

The HP/SPK pin controls the output mode. A logic high selects Headphone Mode, while a logic low selects Speaker Mode. This allows the internal amplifier stages to be configured appropriately for the connected load.