PAM8009

Document number: DS37224 Rev. 1 - 2

1 of 12

www.diodes.com

January 2015

© Diodes Incorporated

PAM8009

3W STEREO CLASS-D Audio Amplifier and Class AB

Headphone Driver (DC VOLUME, UVP and AGC Function)

Notes:

1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.

2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-

free, "Green" and Lead-free.

3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total

Br + Cl) and <1000ppm antimony compounds.

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.

Pin Assignments

BYPASS 4

ROUTN 1

RINN 5

SD 3

P8009

XXXYW

HP_ROUT 2

13 VDD

15 LOUTN

12 UVP

14 HP_LOUT

11 AGC

Features

•

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 (Notes 1 & 2)

•

Halogen and Antimony Free. “Green Device (Note 3)

Applications

•

LCD Monitor / Projects

•

Projects / All-In-One Computers

•

Portable Speakers

•

Portable DVD Player / Game Machines