ENA0714
Ordering number : ENA0714
Monolithic Linear IC
LA42205
Audio Output for TV application
5W × 2ch Power Amplifier
Overview
The LA42205 is a 5W 2-channel power amplifier IC and optimal for use as the audio output power amplifier in TV
application
Functions
• 5W × 2 channels (VCC = 9.5V, RL = 8Ω)
• Built-in standby function.
• Built-in mute function.
• Built-in various protection circuit (short to VCC/short to ground/load shorting/overheating).
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Maximum supply voltage
Symbol
VCC max
Conditions
Ratings
No signal
Unit
16
V
W
Allowable power dissipation
Pd max
Infinitely large heat sink
30
Maximum output current
IO peak
Per channel
1.0
A
Maximum junction temperature
Tj max
150
°C
2.5
°C/W
Thermal resistance
θjc
Operating temperature
Topr
-20 to +75
°C
Storage temperature
Tstg
-40 to +150
°C
Operating Conditions at Ta = 25°C
Parameter
Symbol
Recommended supply voltage
VCC
Recommended load resistance
RL
Allowable operating supply
voltage range
VCC op
Conditions
Under conditions such that
Ratings
Unit
9.5
V
8
Ω
7 to 14
V
maximum ratings are not exceeded
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to
"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,
communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be
intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace
instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety
equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case
of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee
thereof. If you should intend to use our products for applications outside the standard applications of our
customer who is considering such use and/or outside the scope of our intended standard applications, please
consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our
customer shall be solely responsible for the use.
Specifications of any and all SANYO Semiconductor Co.,Ltd. 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.
53007 MS PC 20070205-S00003 No.A0714-1/7
LA42205
Electrical Characteristics at Ta = 25°C, VCC = 9.5V, RL = 8Ω, f = 1kHz, Rg = 600Ω
Parameter
Symbol
Ratings
Conditions
min
Standby current
Ist
Quiescent current
Amplifier OFF
ICCO
Rg = 0, RL = OPEN
Output power
PO1
THD = 10%
Total harmonic distortion
THD
PO = 1W
Voltage gain
VG
Output noise voltage
VNO
Ripple rejection ratio
SVRR
Channel separation
CH.Sep
Mute attenuation value
4
Vmute
Vst
Input resistance
Ri
0
10
μA
70
140
mA
5
W
0.2
%
32
34
dB
0.2
0.4
mVrms
30
Rg = 0, fR = 100Hz, VCCR = 0dBm
40
50
dB
Rg = 10kΩ, VO = 0dBm
50
60
dB
VO = 1Vrms, BPF = 20Hz to 20kHz
80
90
dB
Mute ON *1
1.5
3.0
0
0.5
V
2.5
VCC
V
Mute OFF
Standby control voltage (pin 6)
max
0.06
Rg = 0, BPF = 20Hz to 20kHz
ATT
Mute control voltage (pin 7)
35
VO = 0dBm
Unit
typ
Amplifier ON *1
Amplifier OFF
0
21
30
V
0.5
V
39
kΩ
*1 : Note that the standby pin (pin 6) and MUTE pin (pin 7) incorporate the anti-electrostatic diode allowing the current to flow through the diode when the
potential of VCC (pin 9) decreases below that of pin 6 or 7.
Package Dimensions
unit : mm (typ)
3336
21.6
HEAT SPREADER
(20.0)
3.0
(11.0)
(11.0)
3.35
12.4
(9.05)
(14.55)
17.9
(8.6)
(R1.75)
1
(1.91)
0.4
15
1.27
0.7
2.54 2.54
Allowable power dissipation, Pd max – W
40.0
30.0
20.0
Pd max – Ta
Aluminum heat sink mounting conditions
Tightening torque : 39N.cm
silicone grease applied
Infinitely large heat sink
θjc = 2.5°C/W
5°C/W heat sink
16.7
10°C/W heat sink
10.0
20°C/W heat sink
5.6
0
– 20
0
20
40
60
80
100
120
140
Ambient temperature, Ta – °C
SANYO : HZIP15
No.A0714-2/7
LA42205
Block Diagram
Standby
VCC
6
9
Input amplifier
14 +OUT1
IN1 3
Output amplifier
Ri=
30kΩ
13 -OUT1
MUTE 7
VCC/ground shorting protection circuit
Load shorting protection circuit
Thermal protection circuit
PRE
GND 4
PWR
11 GND
10 +OUT2
IN2 5
Output amplifier
Ri=
30kΩ
12 -OUT2
Input amplifier
2
Ripple
Filter
Test Circuit
LA42205
GND
(H.S)
1
Ripple
Filter
2
IN1
PRE
GND
IN2
3
4
5
+ C3
100μF
/25V
C1
0.47μF
STBY MUTE
6
C2
0.47μF
VCC +OUT2
7
R1
15kΩ
8
9
10
PWR
GND -OUT2 -OUT1 +OUT1
11
12
13
14
GND
(H.S)
15
RL = 8Ω
+ C4
10μF
/6.3V
RL = 8Ω
+
+5V
C6
470μF
/25V
C5
0.1μF
+VCC
* Pin 8 : NC. This pin must be left open.
* Pins 1 and 15 are connected to the heat sink. They must be connected to power and ground.
Pin Voltage
Conditions : VCC = 9.5V, STBY = 5V
Pin No.
1
2
3
4
5
6
7
8
Pin
GND
(H.S)
0
Ripple
Filter
9.2
IN1
Pre
GND
0
IN2
STBY
Mute
N.C.
0.7
5
0
-
Pin voltage
(V)
0.7
9
10
11
12
13
14
15
VCC +OUT2 Power -OUT2 -OUT1 +OUT1 GND
GND
(H.S)
9.5
4.8
0
4.8
4.8
4.8
0
No.A0714-3/7
LA42205
External Components
C1, C2
C3
C4, R1
C5
C6
: Input coupling capacitors. A value of 47μF is recommended.
The input pin potential is 0.7V.
: Capacitor which sets the starting time of the ripple filter and amplifier. A value of 100μF is recommended.
: Capacitor and resistor for muting function. C4 is necessary even when the mute function is not used.
: This capacitor increases the oscillator margin. We recommend a value of 0.1μF.
: Power supply capacitor.
1. Muting function (pin 7)
The muting function is turned on when the pin 7 voltage is 1.5V (minimum) or higher.
The VM applied voltage is set so that the pin 7 voltage will be 1.5V or higher.
The muting time constant is determined by an C4, R1 circuit, and the component values must be determined by a
careful analysis, since they are related to impulse noise that occurs when the muting function is turned on or off. Also
note that since C4 affects the occurrence of impulse noise when the amplifier is turned on or off, it will be required if
the muting function is not used.
Mute
VCC
R1
15kΩ
1kΩ
VM
2kΩ
7
C4 +
10μF
/6.3V
20kΩ
7.5kΩ
2. Standby function (pin 6)
The amplifier is turned on by applying a level of 2.5V (minimum) or higher to pin 6.
Pin 6 control voltage
Pin 6 voltage
Amplifier
Standby
0 to 0.5
Off
On
2.5 to VCC
On
Off
The limit resistor RSTB may be inserted if the VSTB applied voltage is comparatively high and there is a need to
suppress the pin 6 sink current.
Standby
VCC
2VBE
VS
RSTB
15kΩ
6
30kΩ
1.5kΩ
No.A0714-4/7
LA42205
Usage Notes
1. This IC includes three short circuit protection circuits : shorting to power (shorts between an output and the power
supply), shorting to ground (shorts between an output and ground), and load shorting protection circuits.
These protection circuits operate while the corresponding abnormal condition continues, and recover automatically
when the abnormal condition is resolved.
There are, however, cases where, due to IC usage conditions, one of these protection circuits may lock and continue
operating after the problem has been resolved. If this occurs, the protection circuit state can be reset by either
switching the IC to standby mode or by temporarily cutting power from the IC.
2. This IC includes a thermal protection circuit that operates if the junction temperature (Tj) rises to 160°C or higher.
This circuit gradually reduces the output level.
3. If this IC is operated in the vicinity of any of its maximum ratings, even slight changes in operating conditions could
result in a maximum rating being exceeded. Since this could lead to the destruction of the IC, end product designs must
include adequate margins in the supply voltage and other parameters so that the IC is always used within ranges such
that the maximum ratings are never exceeded.
No.A0714-5/7
LA42205
ICCO – VCC
12
RL = open
Rg = 0Ω
VSTBY = 5V
120
10
Output power, PO – W
Quiescent current, ICCO – mA
140
100
80
60
40
PO – VCC
THD = 10%
RL = 8Ω
Rg = 600Ω
f = 1kHz
8
6
4
2
20
0
6
8
10
12
14
16
0
6
18
8
10
7
5
3
2
THD – PO (ch1)
VCC = 9.5V
RL = 8Ω
Rg = 600Ω
1
7
5
3
2
10kHz
0.1
7
5
1kHz
100Hz
3
2
0.01
0.1
2
3
5
7
2
1
3
10
5
7
10
7
5
3
2
THD – PO (ch2)
1
7
5
3
2
10kHz
0.1
7
5
1kHz
100Hz
3
2
0.01
0.1
10
2
3
THD – f
ch2
ch1
0.1
7
5
–2
– 2.5
VCC = 9.5V
RL = 8Ω
Rg = 600Ω
VO = 0dBm (f = 1kHz)
2 3
5 7 1k
2 3
5 7 10k
2 3
5 7100k
10
2 3
5 7 100
Frequency, f – Hz
2 3
5 7 1k
2 3
5 7 10k
2 3
5 7100k
2 3
5 7100k
Frequency, f – Hz
VNO – Rg
0
VCC = 9.5V
RL = 8Ω
B.P.F = 20Hz to 20kHz
Channel separation, CH Sep. – dB
Output noise voltage, VNO – mVrms
10
– 1.5
–4
0.01
0.3
ch2
ch1
0.1
0
10
7
ch2
–1
– 3.5
0.2
5
ch1
–3
3
2
0.4
3
– 0.5
3
2
5 7 100
2
1
0
1
7
5
2 3
7
Response – f
0.5
VCC = 9.5V
RL = 8Ω
Rg = 600Ω
PO = 1W
10
5
Output power, PO – W
Response – dB
Total harmonic distortion, THD – %
3
2
14
VCC = 9.5V
RL = 8Ω
Rg = 600Ω
Output power, PO – W
10
7
5
12
Supply voltage, VCC – V
Total harmonic distortion, THD – %
Total harmonic distortion, THD – %
Supply voltage, VCC – V
– 10
CH Sep. – f
VCC = 9.5V
RL = 8Ω
Rg = 10kΩ
VO = 0dBm
– 20
– 30
– 40
– 50
– 60
ch1→ch2
ch2→ch1
– 70
2 3
5 7 100
2 3
5 7 1k
2 3
5 7 10k
2 3
Resistance for signal generation, Rg – Ω
5 7100k
10
2 3
5 7 100
2 3
5 7 1k
2 3
5 7 10k
Frequency, f – Hz
No.A0714-6/7
LA42205
SVRR – VCC
0
RL = 8Ω
Rg = 0
fr = 100Hz
VCCR = 0dBm
CVCC = 0.1μF
– 10
– 20
Ripple rejection ratio, SVRR – dB
Ripple rejection ratio, SVRR – dB
0
– 30
– 40
– 50
ch1 and ch2 is similar
– 60
– 10
– 20
SVRR – fr
VCC = 13V
RL = 8Ω
Rg = 0
VCCR = 0dBm
CVCC = 0.1μF
– 30
– 40
ch1 and ch2 is similar
– 50
– 60
– 70
– 70
6
8
10
12
14
16
10
2 3
5 7 100
Supply voltage, VCC – V
ATT – Mute Pin
10
Allowable power dissipation, Pd – W
Mute attenuation value, Mute ATT – dB
0
ch1 and ch2 is similar
– 10
– 20
– 30
– 40
– 50
– 60
– 70
– 80
– 90
VCC = 9.5V
RL = 8Ω
Rg = 600Ω
f = 1kHz
VO = 1Vrms (Mute pin = 0V)
B.P.F. =20Hz to 20kHz
– 100
0.5
0.6
0.7
0.8
0.9
1.0
Mute pin – V
1.1
2 3
5 7 1k
2 3
5 7 10k
2 3
5 7100k
Ripple frequency, fr – Hz
1.2
1.3
1.4
8
Pd – PO
VCC = 9.5V
RL = 8Ω
Rg = 600Ω
f = 1kHz
Pd = VCC×ICC-2PO
6
Pd
4
2
0
0.1
2
3
5
7
1
2
3
5
7
10
Output power, PO – W
SANYO Semiconductor Co.,Ltd. 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 Semiconductor Co.,Ltd.
products described or contained herein.
SANYO Semiconductor Co.,Ltd. strives to supply high-quality high-reliability products, however, any and all
semiconductor products fail or malfunction with some probability. It is possible that these probabilistic failures or
malfunction could give rise to accidents or events that could endanger human lives, trouble that could give rise
to smoke or fire, or accidents 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 Semiconductor Co.,Ltd. products described or contained herein are
controlled under any of applicable local export control laws and regulations, such products may require 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 consent of SANYO Semiconductor 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 Semiconductor Co.,Ltd. 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.
Upon using the technical information or products described herein, neither warranty nor license shall be granted
with regard to intellectual property rights or any other rights of SANYO Semiconductor Co.,Ltd. or any third
party. SANYO Semiconductor Co.,Ltd. shall not be liable for any claim or suits with regard to a third party's
intellctual property rights which has resulted from the use of the technical information and products mentioned
above.
This catalog provides information as of May, 2007. Specifications and information herein are subject
to change without notice.
PS No.A0714-7/7
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