Page 1
Ordering number : EN6013
LA4601
Monolithic Linear IC
LA4601
Audio Power Amplifier for
Radio Cassette Recorders
Overview
This is a different-package version of the power
amplifier LA4600 with ultralow peripheral
component count. Basic power supply spec is Vcc
= 15V, but a 9V spec for operation without
heatsink is also possible. BS capacitor, NF
capacitor, and oscillation-stopping CR components
are incorporated into the IC circuitry .
Functions
• Pin compatible with the LA4600
• Heatsink not required for 9V version
• Output power VCC =15V/3Ω....7.0W X 2
• Built-in stanby switching
• Built-in overheat protection (TSD)
Specifications
Package Dimensions
unit: mm
3024-SIP10H
[LA4601]
27.0
20.0
8.4
7.0
1.4
0.5
101
2.54
SANYO : SIP10H
2.07
R1.7
11.8
1.0min
13.2max
6.0
0.4
4.0
2.0
Maximum Ratings at Ta = 25°C
Parameter Symbol Conditions Ratings Unit
Maximum supply voltage Vcc
Allowable power dissipation Pd max With an arbitrary large heatsink 25.0 W
Thermal resistance
Operating temperature Topr °C
Storage temperature Tstg °C
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.
max Rg=0 (No signal) 24 V
θ j-c
– 40 to +150
3.0 °C/W
– 20 to +75
SANYO Electric Co., Ltd. Semiconductor Business Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
N1298RM(KI)
No. 6013-1/7
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LA4601
Operating Conditions at Ta = 25°C
Parameter Symbol Conditions Ratings Unit
Recommended supply voltage
Recommended load resistance
Operating supply voltage range
Operating load resistance range Ω
V
cc
R
L
Vcc op
Within maximum ratings V
Electrical Characteristics at Ta = 25°C, VCC = 15V, RL = 3Ω , f = 1 kHz
15 V
3 Ω
5.0 to 22
2.7 to 8
Parameter
Standby current Ist Standby pin -> GND 1.0 10
Quiescent current Icco R g= 0 20 35 70 m A
Voltage gain VG Vo=0 dBm 43.0 45.0 47.0 dB
Total harmonic distortion THD Po=1w 0.2 0.8 %
Output noise voltage Vno Rg=0, DIN AUDIO 0.15 0.5 mV
Output voltage Po1 THD=10% 6.0 7. 0 W
Channel separation Chsep Vo=0 dBm, Rg=0, DIN AUDIO 50 60 dB
Ripple suppression SVRR Vr=0 dBm, Rg=0, fr=100 Hz DIN AUDIO 45 55 dB
Stanby ON voltage
Input resistance Ri 20 30 40 kΩ
Symbol
Po2 Vcc=9V, RL=4Ω , THD=10% 1.5 2.0 W
V
st
Conditions Unit
min typ max
Ratings
1.5 5.0 V
Block Diagram
Standby
7
Standby switching
V
CC
4
µA
CH1 input
Small signal
GND
CH2 input
10
CH1 input
amplifier
R
R
Nf1
9
R
Nf2
REF
amplifier
R
CH2 input
8
amplifier
Pop noise prevention block
Predrive
amplifier
f1
TSD protector
f2
Predrive
amplifier
Output
amplifier
Output
amplifier
Ripple filter
CH1 output
1
Large signal
2
GND
CH2 output
3
6 5
P.P
Filter
No. 6013-2/7
Page 3
Sample Application
LA4601
+5V
0.22µF
0.22µF
+
1000µF
7
STANDBY
+
ch1
10
Input
PRE GND
9
+
ch2
8
Input
LA4601
4
V
CC
Output
POWER GND
Output
ch1
ch2
+
1
1000µF
4Ω
2
+
3
1000µF
4Ω
P.P Filter
6
+
5
+
4.7µF 100µF
28
With an arbitrary large heatsink
25
24
20
16
100X100X1.5mm
12
50X50X1.5mm
8
With recommended substrate
4
IC only
Allowable power dissipation, Pd max – W
0
–20 0 20 40 60 80 100
Pd max – Ta
3
12.5
3
7.0
3.2
AI heatsink
fastening
torque
39N•cm
3.6
Ambient temperature, Ta – ˚C
Apply
silicone
grease
No. 6013-3/7
Page 4
Pin Descriptions
1. Standby switching function
LA4601
V
CC
Power is switched ON and OFF by controlling the High and Low states at pin 7,
respectively (standby). To switch power ON, apply 1.5V or more, or 800 µA to
To bias circuit
pin 7.
Applied voltage
Current supplied to pin 7
.
=
.
2 kΩ
• When directly connecting the microcontroller, add a resistor in series
Applied voltage – V
+
(approx. 0.7V)
BE
2 kΩ
7
2kΩ
2kΩ
to optimize the current for the microcontroller.
2. Input pins (8,10)
Voltage at the input pins is approx. 2 VBE (1.4V).
Input impedance is approx. 30 kΩ.
• The recommended value for the input capacitor is 0.22 µF, but this can be varied in order to adjust the starting time
(ts). (The starting time is the time required from applying voltage to the standby pin until sound output is obtained.)
Input capacitator
Starting time (t
)
s
1.0 µF 2.2 µF 3.3 µF 4.7 µF 10 µF
0.2s 0.3s 0.5s 0.65s 1.5s
3. Filter (decoupling) pin (5)
Pin voltage is approx. 1/2 VCC.
The recommended value for the filter capacitor is 100 µF.
When capacitance is lower, pop noise when setting the standby pin to Low (power OFF) will increase.
Filter capacitor= 100 µF
AC voltage (100 mV)
Output DC voltage
Filter capacitor= 47 µF
AC voltage (200mV)
Output DC voltage
No. 6013-4/7
Page 5
LA4601
4. P.P (pop noise) pin (6)
Voltage at pin 6
.
.
2 kΩ
5.6V+=
VCC – VCE (approx. 0.3V) – 5.6V
• The recommended value for the P.P capacitor is 4.7 µF. When capacitance is
lower than 2.2 µF, pop noise when setting the standby pin to Low (power
OFF) will increase.
When capacitance is higher than 10 µF, the sound will not be cut off when
setting the standby pin to Low (power OFF).
5. Muting
The output signal can be controlled by
connecting pin 5 (Filter) to ground via a
resistance of 300 to 500Ω. If resistance
is higher than 750Ω, the suppression
ratio will decrease.
Output AC voltage
Output DC voltage
V
CC
5kΩ
6
5kΩ
Zener voltage
=5.6V
To input amplifier/
bias circuitry
A11490
Mute ON Mute OFF
A11491
No. 6013-5/7
Page 6
LA4601
12
10
– WTotal harmonic distortion, THD – %
8
O
6
4
Output power, P
2
0
4 8 12 16 20 24
VCC – P
3Ω
=
L
R
O
THD=10%
f=1kHz
=4Ω
L
R
=8Ω
L
R
80
70
60
– mA
CCO
50
40
30
20
Quiescent current, I
10
0
4 8 12 16 20 24 28
Supply voltage, VCC – V
10
7
5
3
2
1.0
7
5
3
2
0.1
7
5
3
2
0.01
10 2 2 2 2 3 5 73573573 5 7 100 1k 10k 100k 0.1 2 3 5 7 2 3 5 71.0 10
THD – f
2ch
1ch
VCC=15V
RL=3Ω
PO=1W
Rg=600Ω
100
7
VCC=15V
5
RL=3Ω
3
PO=1W
2
Rg=600Ω
10
7
5
3
2
1.0
7
5
3
2
0.1
7
5
3
Total harmonic distortion, THD – %Ripple rejection, SVRR – dB
2
0.01
Frequency, f – Hz
80
70
Chsep – f
80
70
ch2-ch1
60
60
ch1-ch2
50
50
VCC – I
Supply voltage, V
THD – P
2ch
1ch
Output power, PO – W
SVRR – f
ch1
ch2
CCO
CC –
O
V
VCC=15V
RL=3Ω
Vr=0dBm
Rg=0
DIN AUDIO
Rg=0
40
VCC=15V
30
Channel separation, Chsep – dB
20
23 100 23 57 23 235775 1k 10k
RL=3Ω
VO=0dBm
Rg=0
DIN AUDIO
Frequency, f – Hz
1
0
–1
–2
Cout=2200
–3
–4
Response – dB
–5
–6
–7
–8
10 23 57 23 57 2 3 57 23 57100 1k 10k 100k
f – Response
µF
µF
Cout=1000
VCC=15V
RL=3Ω
VO=0dBm
Frequency, f – Hz
40
30
20
23 2 235775 100 1k 3
Frequency, f – Hz
1.0
0.9
0.8
– mV
0.7
NO
0.6
0.5
0.4
0.3
0.2
Output noise voltage, V
0.1
0
52352377 1k 10k 75
VNO – Rg
VCC=15V
RL=3Ω
DIN AUDIO
Signal source impedance, Rg – Ω
No. 6013-6/7
Page 7
LA4601
10
RL=3Ω
f=1kHz
9
Rg=600Ω
8
7
6
5
4
3
Power dissipation, Pd – W
2
1
0
6
5
4
3
2
Power dissipation, Pd – W
1
Pd – P
=15V
CC
V
CC
V
0.17
O
=12V
=9V
V
CC
1.0 10 1.0 102 3 57 2 3 57 57 2 3 57
10
9
8
7
6
5
4
3
2
Power dissipation, Pd – W
1
0
0.1723
Output power, PO – W
Pd – P
CC
V
=15V
V
CC
V
CC
=12V
=9V
O
RL=8Ω
f=1kHz
Rg=600Ω
Pd – P
CC
V
V
=15V
CC
V
=12V
CC
O
=9V
Output power, PO – W
RL=4Ω
f=1kHz
Rg=600Ω
0
7
0.1 2 3 57 2 3 57
101.0
Output power, PO – W
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 November, 1998. Specifications and information herein are subject to change
without notice.
No. 6013-7/7
PS
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