LA4629
No.6502-1/6
Two-Channel Audio Frequency Power Amplifier
Overview
The LA4629 is a 2-channel power amplifier de-
veloped for use in radio/cassette player products.
The LA4629 reduces the number of required ex-
ternal 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
)
4.5 W ! 2 (VCC = 12 V, RL = 3
)
: 2.0 W ! 2 (VCC = 9 V, RL = 4
)
4.0 W ! 2 (VCC = 12 V, RL = 4
)
Standby function built in
(supports direct microcontroller control).
Built-in thermal protection circuit.
Specifications
Maximum Ratings
at Ta = 25
C
Parameter
Symbol
Conditions
Ratings
Unit
Maximum supply voltage
VCC max
No input
24
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
Operating Conditions
at Ta = 25
C
Parameter
Symbol
Conditions
Ratings
Unit
Recommended supply voltage
VCC
12
V
Operating voltage range
VCC op
The range over which the package Pd is not exceeded.
5 to 22
V
Recommended operating load resistance
RL op
2.7 to 8
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
Ordering number : ENN6502
LA4629
Package Dimensions
unit : mm
3049B-SIP12H
[LA4629]
42000 RM (IM)
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.
Monolithic Linear IC
SANYO : SIP12H
26.8
(20.0)
(R1.7)
(8.4)
12
1
(11.8)
0.5
2.0
4.0
0.4
2.0
7.0
(2.4)
1.0
13.2max
6.0
1.0min
LA4629
No.6502-2/6
Operating Characteristics
at Ta = 25
C, VCC = 12V, RL = 3
, f = 1 kHz, Rg = 600
Parameter
Symbol
Conditions
Ratings
min
typ
max
Unit
Quiescent current
ICCO
Rg = 0
18
35
80
mA
Standby current
IST
1.0
10
A
Voltage gain
VG
VO = 0 dBm
43
45
47
dB
Output power
PO(1)
THD = 10 %
3.0
4.5
W
PO(2)
VCC = 12 V, RL = 4
, THD = 10 %
4.0
W
PO(3)
VCC = 9 V, RL = 3
, THD = 10 %
2.0
2.5
W
PO(4)
VCC = 9 V, RL = 4
, THD = 10 %
2.0
W
Total harmonic distortion
THD
PO = 1 W
0.2
0.8
%
Output noise voltage
VNO
Rg = 0, DIN AUDIO
0.15
0.5
mV
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
k
Standby pin voltage
VST
The pin 6 voltage such that the amplifier is on
1.5
5.0
V
Application Circuit
Pd max -- Ta
ILA00180
28
20
24
16
25
8
4
12
0
--20
20
0
60
40
100
80
With an arbitrarily large heat sink
Aluminum heat sink mounted with a torque of 39 N cm,
flat washers, and with silicone grease applied.
Mounted on the
Sanyo-recommended
printed circuit board
100 ! 100 ! 1.5 mm
3
50 ! 50 ! 1.5 mm
3
Independent IC
12.5
7.0
3.6
3.2
Allowable power dissipation, Pd max -
-
W
Ambient temperature, Ta --
C
RL
OUT2
VCC
1000 F
RL
1000 F
100 F
4.7 F
1 F
1 F
1000 F
*Rx
+
LA4629
OUT1
NC
NC
POWER
GND
PRE
GND
STBY
STBY
5 V
RF
P. P
IN1
IN2
Top view
IN2
ILA00074
+
+
+
+
+
+
1
2
3
4
5
6
7
8
9
10
11
12
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.)
LA4629
No.6502-3/6
Block Diagram
Pin Functions
1. Standby switch function (pin 6)
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 k
.
Although the recommended value for the input capacitor is 0.22
F, 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
F
2.2
F
3.3
F
4.7
F
10
F
Starting time (ts)
0.2 s
0.3 s
0.5 s
0.65 s
1.5 s
ILA00075
2 k
2 k
Rx
+
STBY
6
STBY pin applied voltage: 5 V
To hold the pin 6 inflow current to about 750
A insert a resistor (Rx) of 4.7 k
STBY pin applied voltage: 12 V
To hold the pin 6 inflow current to about 750
A insert a resistor (Rx) of 14 k
(12 k
).
STBY pin applied voltage: Other value (Vx)
To hold the pin 6 inflow current to about 750
A insert a resistor (Rx) of (Vx - 1.5 V)/750
A.
Applied standby
voltage Vx
The inflowing current at an
applied voltage of 1.5 V, i.e.
the point when the amplifier
turns on, is approximately
750
A.
ch1
Input
ch2
Input
PRE GND
ch1
Output
ch2
Output
POWER GND
STBY
P.P
Filter
VCC
ILA00076
9
6
12
10
8
7
3
5
2
1
ch2 input
amplifier
Standby SW
TSD protector
Pop noise prevention block
Ripple filter
ch1 input
amplifier
Output
amplifier
Output
amplifier
REF
amplifier
RNf1
Rf1
Rf2
RNf2
LA4629
No.6502-4/6
3. FILTER (decoupling) pin (pin 7)
The pin voltage is about 1/2 VCC.
The recommended value for the filter capacitor is 100
F.
The pulse noise that occurs when the standby pin is set low (power off) will be degraded if a value under 100
F is
used.
4. P.P (pulse noise) pin (pin 8)
Pin 8 pin voltage
VCC - VCE (about 0.3 V) - 5.6 V + 5.6 V
2 k
The recommended value for the P.P capacitor is 4.7
F.
The pulse noise that occurs when the standby pin is set low (power off) will
be degraded if a value under 2.2
F is used.
Furthermore, if a value over 10
F is used, the signal may not be cut off and
sound may remain audible when the standby pin is set low (power off).
5. MUTE (Muting)
The output signal can be controlled by shifting the pin 7 (FILTER) level towards ground with a 300 to 500
resistor.
However, note that the degree of suppression is reduced if a value of 750
or more is used.
ILA00078
ILA00079
Filter capacitor = 100
F
Filter capacitor = 47
F
Output DC voltage
Output DC voltage
AC voltage (100 mV)
AC voltage (200 mV)
VCC
5 k
5 k
8
ILA00080
Zener voltage
= 5.6 V
To the input amplifier
block/bias system
ILA00081
Mute ON
Mute OFF
Output DC voltage
Output AC voltage
LA4629
No.6502-5/6
VCC -- PO
Supply voltage, VCC -- V
Output po
wer
, P
O
-
-
W
ILA00082
10
8
6
4
2
0
6
7
10
8
9
11
12
13
16
14
15
17
18
f = 1 kHz
Rg = 600
RL = 3/4/8
THD = 10 %
THD -- f
Frequency, f -- Hz
T
otal harmonic distortion,
THD -
-
%
T
otal harmonic distortion,
THD -
-
%
ILA00084
0.01
0.1
7
5
3
2
1.0
7
5
3
2
10
7
5
3
2
10
2 3
5 7 100 2 3
5 7 1k
2 3
5 7 10k 2 3
5 7100k
Frequency, f -- Hz
10
2 3
5 7
2 3
5 7
2 3
5 7
2 3
5 7
100
1k
10k
100k
0.01
1.0
7
5
3
2
0.1
7
5
3
2
10
7
5
3
2
100
7
5
3
2
0.1
2
3
5
7
1.0
2
3
5
7
10
VCC = 12 V
RL = 3
PO = 1 W
VCC = 12 V
RL = 3
Rg = 0
CHsep -- f
Channel separation, CHsep -
-
dB
ILA00086
0
--20
--10
--30
--40
--50
--60
--70
--80
--90
VCC = 9/12 V
RL = 3
Rg = 0
VO = 0 dBm
DIN AUDIO
Ripple frequency, fR -- Hz
10
2
3
5
7 100
2
3
5
7 1k
2
3
5
7 10k
SVRR -- fR
Ripple rejection ratio, SVRR -
-
dB
0
--20
--10
--30
--40
--50
--60
--70
VCC = 9 V
RL = 3
Rg = 0
VCCR = 0 dBm
DIN AUDIO
VCC -- ICCO
Supply voltage, VCC -- V
Quiescent current, I
CCO
-
-
mA
ILA00083
100
80
60
40
20
0
0
8
4
12
20
16
24
RL = Open
Rg = 0
THD -- PO
Output power, PO -- W
ILA00085
ILA00087
R L
= 3
R L
= 4
R L
= 8
10 kHz
100 Hz
1 kHz
CH21: 9 V
CH21: 12 V
CH1
2: 9
V
OUT2
OUT1
CH12: 12 V
Supply voltage, VCC -- V
Frequency, f -- Hz
10
2 3
5 7
2 3
5 7
2 3
5 7
2 3
5 7
100
1k
10k
100k
Response -
-
dB
2
0
--2
--4
--6
--8
--10
VCC = 12 V
RL = 3
Rg = 600
VO = 0 dBm at 1 kHz
Input capacitor = 1
F
Ripple rejection ratio, SVRR -
-
dB
f -- Response
ILA00088
ILA00089
15
10
20
5
25
SVRR -- VCC
0
--20
--10
--30
--40
--50
--60
--70
Rg = 0
fR = 100 Hz
VCCR = 0 dBm
DIN AUDIO
OUT2
OUT1
LA4629
No.6502-6/6
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.
PS
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