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 Ω1.9  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