LA42105 [SANYO]
Monolithic Linear IC Audio Output for TV application BTL 5W 】 1ch Power Amplifier; 单片线性IC音频输出电视应用BTL 5W 】 1声道功率放大器
| 型号： | LA42105 |
| 厂家： | 
SANYO SEMICON DEVICE |
| 描述： | Monolithic Linear IC Audio Output for TV application BTL 5W 】 1ch Power Amplifier |
| 文件： | 总7页 (文件大小：76K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Ordering number : ENA0741
Monolithic Linear IC
Audio Output for TV application
LA42105
BTL 5W × 1ch Power Amplifier
Overview
The LA42105 is a 5W 1-channel power amplifier IC and optimal for use as the audio output power amplifier in TV
application
Functions
• 5W × 1 channels (V
• Built-in standby function.
= 9.5V, R = 8Ω, THD = 10%)
L
CC
• Built-in mute function.
• Built-in various protection circuit (short to power/short to ground/load shorting/thermal).
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
Unit
V
Maximum supply voltage
Allowable power dissipation
Maximum output current
Maximum junction temperature
Thermal resistance
V
max
No signal
Infinitely large heat sink
16
30
CC
Pd max
W
I
peak
1.0
A
O
Tj max
θjc
150
°C
2.5
°C/W
°C
Operating temperature
Storage temperature
Topr
Tstg
-20 to +75
-40 to +150
°C
Operating Conditions at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
Unit
V
Recommended supply voltage
Recommended load resistance
V
9.5
8
CC
R
Ω
L
Allowable operating supply
voltage range
V
op
Under conditions such that
7 to 14
V
CC
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 20070308-S00002 No.A0741-1/7
LA42105
Electrical Characteristics at Ta = 25°C, V
= 9.5V, R = 8Ω, f = 1kHz, Rg = 600Ω
CC
L
Ratings
typ
Parameter
Symbol
Ist
Conditions
Unit
min
max
10
Standby current
Amplifier OFF
0
μA
mA
W
Quiescent current
I
Rg = 0, R = OPEN
L
25
4
50
5
100
CCO
Output power
P
THD = 10%
O
Total harmonic distortion
Voltage gain
THD
VG
P
V
= 1W
0.06
32
0.2
34
%
O
= 0dBm
30
dB
mVrms
dB
dB
V
O
Output noise voltage
Ripple rejection ratio
Mute attenuation value
Mute control voltage (pin 7)
V
Rg = 0, BPF = 20Hz to 20kHz
0.2
50
0.4
NO
SVRR
ATT
Rg = 0, fR = 100Hz, V R = 0dBm
CC
40
80
1.5
0
V
= 1Vrms, BPF = 20Hz to 20kHz
90
O
Vmute
Mute ON *1
Mute OFF
3.0
0.5
V
Standby control voltage (pin 6)
Vst
Amplifier ON *1
Amplifier OFF
2.5
0
V
V
CC
0.5
V
Input resistance
Ri
21
30
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 V (pin 9) decreases below that of pin 6 or 7.
CC
Package Dimensions
unit : mm (typ)
3336
Pd max – Ta
Aluminum heat sink mounting conditions
40.0
30.0
.
Tightening torque : 39N cm
21.6
(20.0)
(11.0)
silicone grease applied
HEAT SPREADER
Infinitely large heat sink
θjc = 2.5°C/W
3.0
(R1.75)
20.0
16.7
5°C/W heat sink
10°C/W heat sink
20°C/W heat sink
10.0
5.6
0.4
1
15
2.54 2.54
(1.91)
1.27
0.7
0
–
20
0
20
40
60
80
100
120
140
Ambient temperature, Ta – °C
SANYO : HZIP15
No.A0741-2/7
LA42105
Block Diagram
Standby
6
V
CC
9
Input amplifier
+OUT1
14
IN1
3
Output amplifier
Ri=
30kΩ
13 -OUT1
MUTE
7
4
V
CC/ground shorting protection circuit
Load shorting protection circuit
Thermal protection circuit
PWR
GND
PRE
GND
11
2
Ripple
Filter
Test Circuit
LA42105
GND
(H.S)
Ripple
Filter
PRE
PWR
GND
GND
N.C. -OUT1 +OUT1 (H.S)
IN
3
GND
N.C. STBY MUTE
V
N.C.
10
CC
9
1
2
4
5
6
7
8
11
12 13 14 15
C2
+
100μF
/25V
C1
0.47μF
C3
+
R
= 8Ω
L
R1
15kΩ
10μF
/6.3V
+
C5
470μF
/25V
+5V
C4
0.1μF
+V
CC
* Pin 8 : 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 : V
CC
= 9.5V, STBY = 5V
Pin No.
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
V
GND Ripple
(H.S) Filter
IN
Pre
GND
0
N.C. STBY Mute
N.C.
N.C. Power N.C. -OUT1 +OUT1 GND
CC
GND
0
(H.S)
0
Pin voltage
(V)
0
9.2
0.7
-
5
0
-
9.5
-
-
4.8
4.8
No.A0741-3/7
LA42105
External Components
C1
: Input coupling capacitors. A value of 0.47μF is recommended.
The input pin potential is 0.7V.
C2
: Capacitor which sets the starting time of the ripple filter and amplifier. A value of 100μF is recommended.
C3, R1 : Capacitor and resistor for muting function. C3 is necessary even when the mute function is not used.
C4
C5
: 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 V applied voltage is set so that the pin 7 voltage will be 1.5V or higher.
M
The muting time constant is determined by an C3, 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 C3 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
V
CC
R1
15kΩ
1kΩ
2kΩ
V
7
M
C3
+
20kΩ
7.5kΩ
10μF
/6.3V
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
0 to 0.5
Amplifier
Off
Standby
On
2.5 to V
CC
On
Off
The limit resistor R
suppress the pin 6 sink current.
may be inserted if the V
applied voltage is comparatively high and there is a need to
STB
STB
Standby
V
CC
2V
BE
R
STB
15kΩ
30kΩ
V
6
S
1.5kΩ
No.A0741-4/7
LA42105
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.A0741-5/7
LA42105
I
– V
CC
P
– V
CC
CCO
O
100
80
16
14
12
R
= open
THD = 10%
L
Rg = 0Ω
R = 8Ω
L
V
= 5V
Rg = 600Ω
STBY
f = 1kHz
10
8
60
40
6
4
20
0
2
0
6
8
10
12
14
16
18
6
8
10
12
14
Supply voltage, V
CC
– V
Supply voltage, V – V
CC
THD – P
THD – f
O
10
7
5
10
7
5
V
= 9.5V
V
= 9.5V
CC
CC
R = 8Ω
L
R
= 8Ω
L
Rg = 600Ω
Rg = 600Ω
3
2
3
2
P
= 1W
O
1
7
5
1
7
5
3
2
3
2
0.1
7
5
0.1
7
5
3
2
3
2
0.01
0.01
2
3
5
7
1
2
3
5
7
2
3
5
7
2
3
5
7
2
3
5
7
2
3
5 7
100k
0.1
10
10
100
100
100
Output power, P – W
O
Response – f
Frequency, f – Hz
V
– Rg
NO
0.5
0.5
0.4
0.3
0.2
V
L
= 9.5V
CC
= 8Ω
R
0
B.P.F = 20Hz to 20kHz
–
–
–
–
0.5
–
1
1.5
–
2
2.5
–
3
V
= 9.5V
0.1
0
CC
= 8Ω
R
L
3.5
Rg = 600Ω
V
= 0dBm (f = 1kHz)
O
–
4
2
3
5 7
2
3
5 7
2
3
5 7
2
3
5 7
100k
2
3
5 7
2
3
5 7
2
3
5 7
10k
2
3
5 7
100k
10
100
1k
10k
10
100
1k
Frequency, f – Hz
Resistance for signal generation, Rg – Ω
SVRR – fr
SVRR – V
CC
0
0
R
= 8Ω
V
L
= 9.5V
CC
L
Rg = 0
R = 8Ω
–
fr = 100Hz
–
Rg = 0
10
10
V
R = 0dBm
V
CV
R = 0dBm
CC
CV
CC
= 0.1μF
= 0.1μF
CC
CC
–
–
–
–
–
–
–
–
20
30
40
50
20
30
40
50
–
–
–
–
60
70
60
70
6
8
10
12
14
16
18
2
3
5
7
2
3
5
7
2
3
5
7
2
3
5 7
100k
10
100
1k
10k
Ripple frequency, fr – Hz
Supply voltage, V
CC
– V
No.A0741-6/7
LA42105
Pd – P
ATT – Mute Pin
O
10
0
5
4
V
R
= 9.5V
CC
= 8Ω
L
Rg = 600Ω
–
–
–
–
–
10
20
30
40
50
60
70
f = 1kHz
Pd = V ×I -P
CC CC
O
3
2
1
–
–
–
–
V
L
= 9.5V
CC
R
= 8Ω
80 Rg = 600Ω
f = 1kHz
90
V
O
= 1Vrms (V
= 0V)
MUTE
B.P.F. =20Hz to 20kHz
–
100
0.5
0
2
3
5
7
1
2
3
5
7
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
0.1
10
Mute pin – V
Output power, P – W
O
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.A0741-7/7
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