Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details. U-QFN4040-20

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PAM8009 (NRND)

NRND = Not Recommended for New Design

3W Stereo Class D with DC Volume Control, UVP, AGC Function and Headphone Driver

Datasheet

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Description

The PAM8009 is a 3W, Class D audio-power amplifier for driving bridged-tied stereo speakers. Advanced DC volume control minimizes external components and allows BTL (Speaker) volume control and SE (Headphone) volume control, the gain range is from +20dB (Volume=5V) to -60dB (Volume=0V) with 64 steps precise control.

Integrated power-limit technology suppresses the output signal clip automatically due to the over level input signal. This technology also offers low THD+N and protects speaker.

Integrated Undervoltage Protection (UVP) technology, external undervoltage detection can be used to shut down the PAM8009 before an input device can generate a pop.

PAM8009 is available in SO-24 and U-QFN4040-20.

Feature(s)

• Operating Voltage: 2.8v ~ 5.5v

• Filter – Free and Low EMI

• Low Quiescent Current

• IDD=7mA @ VDD= 5V

• 64 Steps DC Volume Control from -80dB to +20dB by DC Voltage with Hysteresis

• Power Limit Function

Disable: 0.45VDD ~ VDD

Max. Power: GND

• UVP Function

Disable: Floating

• Output Power @ THD+N=1%

BTL Mode

VDD=5V, Rl=4Ω; Po=2.4W

VDD=5V, Rl=8Ω; Po=1.4W

SE Mode

VDD=5V, Rl=32Ω; Po=60mW

• Output Power @ THD+N = 10%

BTL Mode

VDD=5V, Rl=4Ω; Po=3.0W

VDD=5V, Rl=8Ω; Po=1.7W

• Input Signal and Headphone Output Signal in Phase

• Thermal and Over-Current Protections with Auto-Recovery

• Power Enhance Package SO-24 and U-QFN4040-20

• Lead Free and Green Devices Available (RoHS Compliant)

• Totally Lead-Free & Fully RoHS Compliant

• Halogen and Antimony Free. “Green Device"

Application(s)

• LCD Monitor / Projects

• Projects / All-In-One Computers

• Portable Speakers

• Portable DVD Player / Game Machines

Specifications & Technical Documents

Product Parameters

Anti-Sat	No
BTL	Yes
Class-D or AB	D
Efficiency (%)	90
Gain Max	20
Gain Min	-60
Headphone Out	Yes
I_{Q (mA)}	7
Maximum V_DD (V)	5.5
Minimum V_DD (V)	2.8
Mono or Stereo	Stereo
Power Limit	Yes
Power/CH (W) @ THD=1%	2.4
Power/CH (W) @ THD=10%	3
PSRR	75
AEC Qualified	No
SE	Yes
SNR	89
Special Features	N/A
Volume/ Gain	64Step DC

Technical Documents

Recommended Soldering Techniques

TN1.pdf

Purchase & Availability

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Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN #	Issue Date	Implementation Date	Subject
PCN-2770	2025-10-30	2025-10-30	Add Fab Site Code, Country of Diffusion (COD) and Assembly Site Origin (ASO) on Product and Shipping Labels for all Diodes Products