PAM8124

Document number: DS36627 Rev. 1 - 2

11 of 15

www.diodes.com

October 2013

© Diodes Incorporated

PAM8124

A Product Line of

Diodes Incorporated

Thermal Protection

Thermal protection on the PAM8124 prevents damage to the device when the internal die temperature exceeds 160°C. There is a ±15 degree

tolerance on this trip point from device to device. Once the die temperature exceeds the set thermal point, the device enters into the shutdown

state and the outputs are disabled. This is not a latched fault, the thermal fault is cleared once the temperature of the die is reduced by 60°C. The

device begins normal operation at this point without external system intervention.

Over Voltage Protection and Under Voltage Lock-out (OVP and UVLO)

An over voltage protection (OVP) circuit is integrated in PAM8124, when the supply voltage is over 28V the OVP is active and then the output

stage is disabled. The PAM8124 will auto recovery when the supply voltage is lower than the OVP threshold.

The PAM8124 incorporates circuitry designed to detect low supply voltage. When the supply voltage drops to 9V or below, the PAM8124 goes

into a state of shutdown. When the supply voltage is higher than UVLO threshold normal operation is resumed.

Typical Applications Circuits

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

C10

10uF

C7

0.1uF

C12

10uF

C9

0.1uF

C14

470uF

C13

470uF

SD

R1

Mute

R2

C1

1uF

C2

1uF

C4

1uF

C3

1uF

C15

220nF

L1

33uH

G0

C5

1uF

C8

0.1uF

G1

C11

10uF

VCC

VCC

VCC

R3

4.7K

C17

470uF

L_out

8ohm

C16

220nF

L2

33uH

C6

1uF

R4

4.7K

C18

470uF

R_out

8ohm

L_in

R_in

Schematic for Single-Ended (SE) Configuration (8Ω Speaker)