Datasheet LA4629 Datasheet (SANYO)

Ordering number : ENN6502

LA4629

Monolithic Linear IC

LA4629

Two-Channel Audio Frequency Power Amplifier

Overview

The LA4629 is a 2-channel power amplifier de­veloped for use in radio/cassette player products.
The LA4629 reduces the number of required ex­ternal components by 50% over earlier products
(BS/NF capacitors and oscillation prevention RC
components) and thus can contribute significantly
to space saving in end products.

Features

•

Provided in the SIP12H package.

•PO : 2.5 W ✕ 2 (VCC = 9 V, RL = 3 Ω)

4.5 W ✕ 2 (VCC = 12 V, RL = 3 Ω)

: 2.0 W ✕ 2 (VCC = 9 V, RL = 4 Ω)

4.0 W ✕ 2 (VCC = 12 V, RL = 4 Ω)

• Standby function built in
(supports direct microcontroller control).

• Built-in thermal protection circuit.

Specifications

Maximum Ratings at Ta = 25°C

Package Dimensions

unit : mm

3049B-SIP12H

[LA4629]

26.8

(20.0)

(8.4)

7.0

(2.4)

2.0

0.5

1.0

(11.8)

(R1.7)

1.0min

121

SANYO : SIP12H

4.0

13.2max

6.0

0.4

2.0

Maximum supply voltage V
Allowable power dissipation Pd max With an arbitrarily large heat sink 25 W
Operating temperature Topr --25 to +75 °C
Storage temperature Tstg --40 to +150 °C

Parameter Symbol Conditions Ratings Unit

CC max

No input 24 V

Operating Conditions at Ta = 25°C

Recommended supply voltage V
Operating voltage range V
Recommended operating load resistance RL op 2.7 to 8 Ω

Parameter Symbol Conditions Ratings Unit

CC

op The range over which the package Pd is not exceeded. 5 to 22 V

CC

Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft's
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.

SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.

12 V

SANYO Electric Co.,Ltd. Semiconductor Company

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

42000 RM (IM)

No.6502-1/6

LA4629

Operating Characteristics at Ta = 25°C, V

Parameter Symbol Conditions

Quiescent current I
Standby current I
Voltage gain V
Output power PO(1) THD = 10 % 3.0 4.5 W

Total harmonic distortion THD PO = 1 W 0.2 0.8 %
Output noise voltage V
Ripple rejection ratio SVRR Rg = 0, fR = 100 Hz, Vr = 0 dBm, DIN AUDIO 45 55 dB
Channel separation CHsep Rg = 0, VO = 0 dBm, DIN AUDIO 43 50 dB

Input resistance Ri 20 30 40 kΩ
Standby pin voltage V

28

Aluminum heat sink mounted with a torque of 39 N •cm,
flat washers, and with silicone grease applied.

25
24

With an arbitrarily large heat sink

20

16

100 ✕ 100 ✕ 1.5 mm

12

Pd max -- Ta

Mounted on the
Sanyo-recommended
printed circuit board

3

12.5

CCO

ST

G

PO(2) V
PO(3) V
PO(4) V

NO

ST

= 12V, RL = 3 Ω, f = 1 kHz, Rg = 600 Ω

CC

Ratings

Rg = 0 18 35 80 mA

VO = 0 dBm 43 45 47 dB

= 12 V, RL = 4 Ω, THD = 10 % 4.0 W

CC

= 9 V, RL = 3 Ω, THD = 10 % 2.0 2.5 W

CC

= 9 V, RL = 4 Ω, THD = 10 % 2.0 W

CC

Rg = 0, DIN AUDIO 0.15 0.5 mV

The pin 6 voltage such that the amplifier is on 1.5 5.0 V

min typ max

1.0 10 µA

Unit

50 ✕ 50 ✕ 1.5 mm

8

4

Independent IC

Allowable power dissipation, Pd max -- W

0

--20 2006040 10080

3

7.0

3.6

3.2

Ambient temperature, Ta -- °C

Application Circuit

OUT2 V

123456789101112

+

1000 F

R

L

OUT1 NC NC

CC

1000 F

R

L

ILA00180

LA4629

POWER
GND

+

STBY

5 V

RF P. P IN1 IN2

*Rx

+ +

100 F

4.7 F

+ +

1 F

1 F

IN2

PRE
GNDSTBY

+

Top view

1000 F

• Pins 4 and 11 must be left open.
*• Rx: If the STBY pin (pin 6) is used, observe the following:

Insert the resistor Rx in series to limit the inflowing current.
(The amplifier will be on when a voltage is applied to pin 6.)

ILA00074

No.6502-2/6

Block Diagram

PRE GND

ch1

Input

LA4629

STBY

6

Standby SW

9

R

Nf1

12

R

Nf2

ch1 input
amplifier

REF
amplifier

R

f1

TSD protector

R

f2

V

CC

2

Output
amplifier

ch1

3

Output

POWER GND

5

ch2

10

Input

Pin Functions

1. Standby switch function (pin 6)

Applied standby

voltage Vx

STBY pin applied voltage: 5 V
To hold the pin 6 inflow current to about 750 µA insert a resistor (Rx) of 4.7 kΩ
STBY pin applied voltage: 12 V
To hold the pin 6 inflow current to about 750 µA insert a resistor (Rx) of 14 kΩ (12 kΩ).
STBY pin applied voltage: Other value (Vx)
To hold the pin 6 inflow current to about 750 µA insert a resistor (Rx) of (Vx - 1.5 V)/750 µA.

ch2 input
amplifier

Pop noise prevention block Ripple filter

8 7

P.P Filter

STBY

Rx

+

The inflowing current at an
applied voltage of 1.5 V, i.e.
the point when the amplifier
turns on, is approximately
750 µA.

6

Output
amplifier

2 kΩ

2 kΩ

ILA00075

1

ch2
Output

ILA00076

• If a microcontroller output signal is applied directly , insert a resistor in series
and adjust the current to a level optimal for the drive capability of the
microcontroller.

2. Input pins (pins 9 and 10)
The input pin voltage is about 2 VBE (1.4 V).
The input pin impedance is about 30 kΩ.

• Although the recommended value for the input capacitor is 0.22 µF, the starting time can be modified by changing the
value of this capacitor. (The time from the point a voltage is applied to the standby pin to the point sound is emitted.)

Input capacitor 1.0 µF 2.2 µF 3.3 µF 4.7 µF 10 µF
Starting time (ts) 0.2 s 0.3 s 0.5 s 0.65 s 1.5 s

No.6502-3/6

LA4629

3. FILTER (decoupling) pin (pin 7)
The pin voltage is about 1/2 VCC.
The recommended value for the filter capacitor is 100 µF.
The pulse noise that occurs when the standby pin is set low (power off) will be degraded if a value under 100 µF is
used.

AC voltage (100 mV) AC voltage (200 mV)

Output DC voltage

Filter capacitor = 100 µF Filter capacitor = 47 µF

ILA00078 ILA00079

Output DC voltage

4. P.P (pulse noise) pin (pin 8)
Pin 8 pin voltage ≈ V

- VCE (about 0.3 V) - 5.6 V

CC

+ 5.6 V

2 kΩ

• The recommended value for the P.P capacitor is 4.7 µF.
The pulse noise that occurs when the standby pin is set low (power off) will
be degraded if a value under 2.2 µF is used.
Furthermore, if a value over 10 µF is used, the signal may not be cut off and
sound may remain audible when the standby pin is set low (power off).

V

CC

5 kΩ5 kΩ

8

Zener voltage
= 5.6 V

To the input amplifier
block/bias system

ILA00080

5. MUTE (Muting)

The output signal can be controlled by shifting the pin 7 (FILTER) level towards ground with a 300 to 500 Ω resistor.
However, note that the degree of suppression is reduced if a value of 750 Ω or more is used.

Output AC voltage

Output DC voltage

Mute ON Mute OFF

ILA00081

No.6502-4/6

-- W

O

Output power, P

10

f = 1 kHz
Rg = 600 Ω
RL = 3/4/8 Ω

8

THD = 10 %

6

4

2

VCC -- P

R

O

R

= 4 Ω

L

L

R

= 3 Ω

= 8 Ω

L

LA4629

100

80

-- mA

60

CCO

40

20

Quiescent current, I

VCC -- I

CCO

RL = Open
Rg = 0

0

67 108 9 11 12 13 1614 15 17 18

Total harmonic distortion, THD -- %

10

1.0

0.1

0.01

V

7

CC

5

RL = 3 Ω
PO = 1 W

3
2

7
5

3
2

7
5

3
2

10

= 12 V

23 57

Supply voltage, V

THD -- f

23 571k23 57

100

CC

-- V

10k

Frequency, f -- Hz

0

--10

V

= 9/12 V

CC

RL = 3 Ω

CHsep -- f

Rg = 0

--20

VO = 0 dBm
DIN AUDIO

--30

CH2➝1: 9 V

Channel separation, CHsep -- dB

--40

CH1➝2: 9 V

--50

--60

--70

--80

--90
23 57 23 57 23 57 23 57

10

100 1k 10k 100k

CH1➝2: 12 V

CH2➝1: 12 V

Frequency, f -- Hz

f -- Response

V

= 12 V

CC

RL = 3 Ω
Rg = 600 Ω

Response -- dB

2

0

--2

--4

--6

--8

VO = 0 dBm at 1 kHz

--10
23 57 23 57 23 57 23 57

10

100 1k 10k 100k

Frequency, f -- Hz

Input capacitor = 1 µF

ILA00082

23 57

ILA00084

ILA00086

ILA00088

100k

0

084122016 24

Total harmonic distortion, THD -- %

100

1.0

0.1

0.01

--10

Supply voltage, V

THD -- P

7
5

3
2

10

7
5

3
2

7
5

3
2

7
5

3
2

0.1

0

10 kHz

100 Hz

1 kHz

23 57

Output power, P

SVRR -- f

1.0

-- V

CC

O

23 57

-- W

O

R

V

CC

RL = 3 Ω
Rg = 0
VCCR = 0 dBm

Ripple rejection ratio, SVRR -- dB

--20

--30

--40

--50

--60

--70

0

--10

10

OUT2

OUT1

23 57

Ripple frequency, f

23 571k23 57

100

SVRR -- V

DIN AUDIO

-- Hz

R

CC

Rg = 0
fR = 100 Hz
VCCR = 0 dBm
DIN AUDIO

--20

--30

--40

--50

OUT1

--60

Ripple rejection ratio, SVRR -- dB

--70

Supply voltage, V

OUT2

1510 20525

-- V

CC

ILA00083

V

= 12 V

CC

RL = 3 Ω
Rg = 0

ILA00085

= 9 V

ILA00087

ILA00089

10

10k

No.6502-5/6

LA4629

Specifications of any and all SANYO products described or contained herein stipulate the performance,
characteristics, and functions of the described products in the independent state, and are not guarantees
of the performance, characteristics, and functions of the described products as mounted in the customer’s
products or equipment. To verify symptoms and states that cannot be evaluated in an independent device,
the customer should always evaluate and test devices mounted in the customer’s products or equipment.

SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and all
semiconductor products fail with some probability. It is possible that these probabilistic failures could
give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire,
or that could cause damage to other property. When designing equipment, adopt safety measures so
that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective
circuits and error prevention circuits for safe design, redundant design, and structural design.

In the event that any or all SANYO products(including technical data,services) described or
contained herein are controlled under any of applicable local export control laws and regulations,
such products must not be exported without obtaining the export license from the authorities
concerned in accordance with the above law.

No part of this publication may be reproduced or transmitted in any form or by any means, electronic or
mechanical, including photocopying and recording, or any information storage or retrieval system,
or otherwise, without the prior written permission of SANYO Electric Co. , Ltd.

Any and all information described or contained herein are subject to change without notice due to
product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification"
for the SANYO product that you intend to use.

Information (including circuit diagrams and circuit parameters) herein is for example only ; it is not
guaranteed for volume production. SANYO believes information herein is accurate and reliable, but
no guarantees are made or implied regarding its use or any infringements of intellectual property rights
or other rights of third parties.

This catalog provides information as of April, 2000. Specifications and information herein are subject
to change without notice.

No.6502-6/6

PS