Panasonic AN5274 Datasheet
ICs for Audio Common Use
AN5274
4.0 W × 2 (18 V, 8 Ω) Power Amplifier with
Mute Function and Volume Control
■ Overview
The AN5274 is a monolithic integrated circuit designed
for 4.0 W (18 V, 8 Ω) output audio power amplifier. It is
a dual channel SEPP IC suitable for stereo operation in
TV application.
■ Features
• Built-in DC volume control
• Built-in mute circuit
• Built-in thermal protection circuit
• Built-in over current protection circuit
• Higher ripple rejection as compared to AN5273
• V
operating range : 14.2 V to 27.5 V
CC
Unit : mm
7.7±0.3
φ3.6
(10.0)(10.0)
20.0±0.3
28.0±0.3
29.75±0.30
R1.8
0.6
(12.5)
1.2±0.1
19.1±0.3
21.9±0.3
(1.2)
121
(1.27) (1.3)
(1.27)
+0.15
–0.05
0.6
2.54
+0.10
–0.05
0.25
29.6±0.3
1.45±0.151.80±0.15
3.5±0.3
■ Applications
• TV
■ Block Diagram
Volume
1
2
3
In1
Mute
Vol.
■ Pin Descriptions
Pin No. Description
1 Mute control
2 Ch.1 input
3 Volume control
4 Ripple rejection
5 Ch.2 input
6 Ripple filter
HSIP012-P-0000A
Over
current
thermal
8
NF2
protection
circuit
9
10
GND
12
11
CC
V
NF1
Out1
Ripple
filter
4
5
6
7
RF
In2
RR
Out2
Pin No. Description
7 Ch.2 output
8 Negative feedback ch.2
9 GND
10 V
CC
11 Negative feedback ch.1
12 Ch.1 output
1
AN5274 ICs for Audio Common Use
■ Absolute Maximum Ratings
Parameter Symbol Rating Unit
Supply voltage V
Supply current I
2
Power dissipation
Operating ambient temperature
Storage temperature
Note) *1:Ta = 25 °C except power dissipation, operating ambient temperature and storage temperature.
*2: Power dissipation of the package at Ta = 75 °C.
*
1
*
1
*
CC
CC
P
D
T
opr
T
stg
■ Recommended Operating Range
Parameter Symbol Range Unit
Supply voltage V
CC
■ Electrical Characteristics at VCC = 18 V, f = 1 kHz, RL = 8 Ω, Ta = 25 °C
Parameter Symbol Conditions Min Typ Max Unit
Quiescent current I
Voltage gain G
1
Total harmonic distortion
Maximum power output
*
1
*
THD VIN = 90 mV 0.3 1.0 %
P
Channel balance CB VIN = 90 mV −10 1dB
1
Max. volume attenuation
Mute attenuation
Output noise voltage
Ripple rejection
Note) *1: With a filter band from 20 Hz to 20 kHz used.
*1
*
1
*
1
*
M
V
No input signal 17 2 5 33 mA
CQ
VIN = 90 mV 28 30 32 dB
V
THD = 10 % 3.6 4.1 W
Omax
Att VIN = 90 mV −70 −64 dB
VIN = 90 mV −70 −64 dB
Att
Rg = 10 kΩ, Din-Audio Filter 0.6 1.0 mV[rms]
NO
RR VR = 280 mV[rms], fR = 100 Hz 30 35 dB
Rg = 10 kΩ
29 V
3.5 A
37.5 W
−25 to +75 °C
−55 to +150 °C
14.2 to 27.5 V
• Design reference data
Note) The characteristic values below are theoretical values for designing and not guaranteed.
Parameter Symbol Conditions Min Typ Max Unit
Channel cross-talk CT V
Max. power dissipation P
Max. power dissipation P
Dmax1
Dmax2VCC
= 1 V[rms], Volume = max. 47 57 dB
OUT
Use 10 °C/W heat sink 57W
= 15.6 V, RL = 16 Ω1.9 W
No heat sink
2
Input dynamic range
Note) *2: In order to measure input dynamic range correctly, it is necessary to reduce the gain by decreasing the DC volume to 1 V
to 2 V.
*
DRINTHD = 1 %, PO = 1 W 6.1 7.2 V[p-p]
2
ICs for Audio Common Use AN5274
■ Application Circuit Example
AN5274
GND 9
1000 µF
18 V
10
V
CC
22 kΩ
Audio
mute
5 V
Mute 1
33 µF
In1 2
1 µF
Vol. 3
3.3 µF
5 V
4
RR
10 kΩ
1 µF
In2 5
100 µF
R
RF 6
1000 µF
= 8 Ω
L
Out2 7
20 kΩ
0.047
µF
20 Ω
NF2 8
1 kΩ
■ Usage Notes
1) Depending on the maximum application output power, external heatsink may be needed.
External heatsink should be fixed to the chassis.
2) Fin of the IC can be connected to GND.
3) Please prevent output to V
4) The temperature protection circuit will operate at T
short and output to GND short.
CC
around 150 °C. However, if the temperature decreases, the
j
protection circuit would automatically be deactivated and resume normal operation.
■ Technical Information
• HSIP012-P-0000A Package power dissipation
T
P
D
a
70.0
Infinite heat sink
62.5
60.0
R
R
th (j−c)
th (j−a)
= 2 °C/W
= 42 °C/W
10 µF
1 kΩ
NF1 11
20 kΩ
0.047
µF
20 Ω
Out1 12
1000 µF10 µF
R
= 8 Ω
L
50.0
(W)
D
1 °C/W heat sink
41.7
40.0
2 °C/W heat sink
31.3
30.0
3 °C/W heat sink
25.0
Power dissipation P
20.0
5 °C/W heat sink
17.9
10 °C/W heat sink
10.4
10.0
Without heat sink
3.0
0.0
0 25 150
50 75 100 125
Ambient temperature Ta (°C)
3
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