1 F

m

SD

MuteControl

PVCCL

TPA3123D2

TPA3120D2

SIMPLIFIED APPLICATIONCIRCUIT

PVCCR

VCLAMP

GAIN1

BYPASS

1 F

m

1 F

m

0.22 F

m

AGND

LeftChannel

RightChannel

10Vto30V

10Vto30V

Control

Shutdown

Control

LIN

RIN

BSR

BSL

PGNDR

PGNDL

0.22 F

m

22 H

m

22 H

m

0.68 F

m

470 F

m

0.68 F

m

1 F

m

470 F

m

GAIN0

AVCC

MUTE

ROUT

LOUT

TPA3123D2

www.ti.com

SLOS541C – JULY 2007 – REVISED AUGUST 2010

25-W STEREO CLASS-D AUDIO POWER AMPLIFIER

Check for Samples: TPA3123D2

1

FEATURES

APPLICATIONS

•

Televisions

2

•

25-W/ch into a 4-

Ω Load from a 27-V Supply

•

20-W/ch into a 4-

Ω Load from a 24-V Supply

DESCRIPTION

•

Operates from 10 V to 30 V

The TPA3123D2 is a 25-W (per channel) efficient,

•

Efficient Class-D Operation Eliminates Need

Class-D audio power amplifier for driving stereo

for Heat Sinks

speakers in a single-ended configuration or a mono

•

Four Selectable, Fixed-Gain Settings

speaker in a bridge-tied-load configuration. The

•

Internal Oscillator (No External Components

TPA3123D2 can drive stereo speakers as low as 4

Ω.

The efficiency of the TPA3123D2 eliminates the need

Required)

for an external heat sink when playing music.

•

Single-Ended Analog Inputs

The gain of the amplifier is controlled by two gain

•

Thermal and Short-Circuit Protection With

select pins. The gain selections are 20, 26, 32,

Auto Recovery

36 dB.

•

Space-Saving Surface-Mount 24-Pin TSSOP

The patented start-up and shut-down sequences

Package

minimize pop noise in the speakers without additional

•

Pin-to-Pin compatible with TPA3120D2

circuitry.

•

Advanced Power-Off Pop Reduction

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

System Two, Audio Precision are trademarks of Audio Precision, Inc.

PRODUCTION DATA information is current as of publication date.

Copyright © 2007–2010, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.