PAM8124

Document number: DS36627 Rev. 1 - 2

1 of 15

www.diodes.com

October 2013

© Diodes Incorporated

PAM8124

A Product Line of

Diodes Incorporated

HIGH POWER AUDIO

Description

The PAM8124 is a 15W efficient, Class-D audio power amplifier for

driving stereo speakers in a single-ended configuration; or a mono

speaker in a bridge-tied-load configuration. The PAM8124 can drive

stereo speakers (SE) as low as 4Ω. Due to the low power dissipation

and high efficiency, up to 95%, the device can be used without any

external heat sink when playing music.

The gain of the amplifier is controlled by 2 gain selectable pins,

offering 20dB, 26dB, 32dB, and 36dB gain selections.

The PAM8124 is available in a TSSOP-24-EP package.

Features

•

30W/Ch into 8Ω BTL Load from 22V Supply

•

15W/Ch into 4Ω SE Load from 22V Supply

•

10W/Ch into 8Ω SE Load from 24V Supply

•

Operate from 10V to 26V

•

Single-Ended Analog Inputs

•

Supports Multiple Output Configurations:

2-Ch Single-Ended (SE, Half-Bridge)

1-Ch Bridge-Tied Load (BTL, Full-Bridge)

•

Four Selectable Fixed-gain Settings

•

No Pop Noise for Start-up and Shut-down Sequences

•

Internal Oscillator (No External Components Required)

•

High Efficient Class-D Operation Eliminates Need for Heat Sinks

•

Thermal and Short-Circuit Protection with Auto Recovery

•

Space-Saving Surface-Mount TSSOP-24EP Package

•

Pb-Free Package

Pin Assignments

TSSOP-24-EP

PVCCL

SDN

PVCCL

MUTE

LIN

VCM

AGND

AGND

PVCCR

VCLAMP

PVCCR

PGNDR

PGNDR

ROUT

BSR

GAIN1

GAIN0

AVCC

BSL

LOUT

PGNDL

PGNDL

17

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

18

19

20

21

22

23

24

RIN

SE_BTL

Applications

•

Televisions

•

Home Sound Systems

•

Active Speakers

Typical Applications Circuit

PVCCL

1

SDN

2

PVCCL

3

MUTE

4

LIN

5

RIN

6

VCM

7

AGND

8

AGND

9

PVCCR

10

VCLAMP

11

PVCCR

12

PGNDR

13

PGNDR

14

ROUT

15

BSR

16

GAIN1

17

GAIN0

18

SE_BTL

19

AVCC

20

BSL

21

LOUT

22

PGNDL

23

PGNDL

24

U1

SD

Mute

C1

1uF

C3

1uF

C5

220nF

L1

33uH

G0

C2

1uF

G1

R1

4.7K

C7

470uF

L_out1

8ohm

C6

220nF

L2

33uH

C4

1uF

R2

4.7K

C8

470uF

R_out1

8ohm

L_in

R_in

10V_to_26V

10V_to_26V

SE_BTL

10V_to_26V