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Diodes Semiconductor Electronic Components Datasheet

PAM8124 Datasheet

HIGH POWER AUDIO

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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 4. 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 8BTL Load from 22V Supply
15W/Ch into 4SE Load from 22V Supply
10W/Ch into 8SE Load from 24V Supply
Operate from 10V to 26V
Single-Ended Analog Inputs
Supports Multiple Output Configurations:
ƒ 2-Ch Single-Ended (SE, Half-Bridge)
ƒ 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
A Product Line of
Diodes Incorporated
PAM8124
HIGH POWER AUDIO
Pin Assignments
TSSOP-24-EP
PVCCL 1
SDN 2
PVCCL 3
MUTE 4
LIN 5
RIN 6
VCM 7
AGND 8
AGND 9
PVCCR 10
VCLAMP 11
PVCCR 12
24 PGNDL
23 PGNDL
22 LOUT
21 BSL
20 AVCC
19 SE_BTL
18 GAIN0
17 GAIN1
16 BSR
15 ROUT
14 PGNDR
13 PGNDR
Applications
Televisions
Home Sound Systems
Active Speakers
Typical Applications Circuit
10V_to_26V
SD
Mute
L_in
R_in
C1
1uF
C3
1uF
10V_to_26V
U1
1 PVCCL
2 SDN
3 PVCCL
4 MUTE
5 LIN
6 RIN
7 VCM
8 AGND
9 AGND
10 PVCCR
11 VCLAMP
12 PVCCR
PGNDL
PGNDL
LOUT
BSL
AVCC
SE_BTL
GAIN0
GAIN1
BSR
ROUT
PGNDR
PGNDR
24
23
22 L1
33uH
21
C2 1uF
20 10V_to_26V
19 SE_BTL
18 G0
17 G1
16 C4 1uF
15 L2
14 33uH
13
C5 R1
220nF 4.7K C7
470uF
L_out1
8ohm
C8
470uF
C6 R2
220nF 4.7K
8ohm
R_out1
PAM8124
Document number: DS36627 Rev. 1 - 2
1 of 15
www.diodes.com
October 2013
© Diodes Incorporated


Diodes Semiconductor Electronic Components Datasheet

PAM8124 Datasheet

HIGH POWER AUDIO

No Preview Available !

A Product Line of
Diodes Incorporated
PAM8124
Pin Descriptions
Pin
1, 3
2
4
5
6
7
8, 9
10, 12
11
13, 14
15
16
17
18
19
20
21
22
23, 24
Name
PVCCL
SDN
MUTE
LIN
RIN
VCM
AGND
PVCCR
VCLAMP
PGNDR
ROUT
BSR
GAIN1
GAIN0
SE_BTL
AVCC
BSL
LOUT
PGNDL
I/O/P
P
I
I
I
I
O
P
P
P
P
O
I/O
I
I
I
P
I/O
O
P
Function
Power supply for left channel H-bridge, not connected to PVCCR or AVCC
Shutdown signal for IC (low = shutdown, high = operational). TTL logic levels with compliance to AVCC
A logic high on this pin disables the outputs. A low on this pin enables the outputs. TTL logic levels with
compliance to AVCC
Audio input for left channel
Audio input for right channel
Reference for analog cells
Analog ground for digital/analog cells in core
Power supply for right channel H-bridge, not connected to PVCCL or AVCC
Internally generated voltage supply for bootstrap. Not to be used as a supply or connected to any
component other than the decoupling capacitor.
Power ground for right channel H-bridge
Class-D H-bridge output for right channel
Bootstrap I /O for right channel H-bridge
Gain select most-significant bit. TTL logic levels with compliance to AVCC
Gain select least-significant bit. TTL logic levels with compliance to AVCC
A logic low on this pin enables one single-ended input in BTL configuration. A logic high on this pin
enables two inputs in SE/BTL configuration. TTL logic levels with compliance to AVCC
High-voltage analog power supply
Bootstrap I /O for left channel H-bridge
Class-D H-bridge output for left channel
Power ground for left channel H-bridge
Functional Block Diagram
PAM8124
Document number: DS36627 Rev. 1 - 2
2 of 15
www.diodes.com
October 2013
© Diodes Incorporated


Part Number PAM8124
Description HIGH POWER AUDIO
Maker Diodes
Total Page 15 Pages
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