Ordering number : ENA0314A
Monolithic Linear IC
LA42052
Audio Output for TV application
5W × 2ch Power Amplifier
Overview
LA42052 is 5W 2-channel AF power amplifier intended for televisions.
Functions
• 5W × 2 channels (VCC = 18V, RL = 8Ω)
• Standby function
• Pop noise reduction function
• Ripple filter
• Thermal protection circuit
LA42000 series is power IC which made Pin compatible altogether in 5 to 15W. They consist of four kinds of power ICs
(mono, stereo, mono with volume function, stereo with volume function. They realized PCB layout communalization of an
audio power block of TV).
Model name
PO
LA42051
5W
LA42052
5W
LA42351
5W
LA42352
5W
LA42071
7W
Channel
Monaural
Volume
Stereo
{
{
{
{
{
{
{
LA42072
7W
{
LA42152
15W
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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.
51408 MS PC/83006/42606 MS JK B8-7286 No.A0314-1/7
LA42052
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Symbol
Maximum supply voltage
Conditions
VCC max
Allowable power dissipation
Pd max
Maximum junction temperature
Tj max
Ratings
unit
No signal
24
V
Infinitely heat sink
15
W
150
°C
θjc
Thermal resistance
3
°C/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
18
V
Recommended load resistance
RL
8
Ω
5.5 to 22
V
Allowable operating voltage range
VCC op
Electrical Characteristics at Ta = 25°C, VCC = 18V, RL = 8Ω, f = 1kHz, Rg=600Ω
Parameter
Symbol
Ratings
Conditions
min
Standby current
ISTB
Amplifier off
Quiescent current
ICCO
Rg = 0
Output power
PO
Total harmonic distortion
Voltage gain
VO = 0dBm
VNO
Ripple rejection
4
33
Rg = 0, BPF = 20Hz to 20kHz
SVRR
1
10
μA
50
100
mA
0.4
%
35
37
dB
0.05
0.25
50
60
60
CH Sep.
Rg = 10kΩ, VO = 0dBm
50
Standby control voltage
VSTB-H
Amplifier on
1.0
(The Pin 5 voltage)
VSTB-L
Amplifier off
W
0.15
Rg = 0, fR = 100Hz, VCCR = 0dBm
Channel separation
Input resistance
max
5
PO = 1W
VG
Output noise voltage
18
THD = 10%
THD
Unit
typ
dB
dB
5
0
Ri
mVrms
21
V
0.5
V
39
kΩ
30
Package Dimensions
unit : mm
3107B
Pd max - Ta
2.4
1
13
0.5
2.0
1.15
1.0 min
4.5
(13.9)
2.0)
15.4max
(
(10.0)
3.4
11.2
(11.8)
C0.7
3.0 min
25.6
0.4
1.2
Allowable power dissipation, Pd max - W
18
16
15
14
12
11.7
Al heat sink Mounting
Torque 39N⋅cm
Flat washer
Silicone greas
applird
Infinite heat sink.
100×100×1.5mm3
θj=3°C/W
10
8
6
5.8
50×50×1.5mm3
4
2
0
-20
No heat sink.
0
20
40
60
80
100
120
140
160
Ambient temperature, Ta - °C
(0.8)
SANYO : SIP13H
No.A0314-2/7
LA42052
Block Diagram
Standby
VCC
5
7
Input amplifier
Output amplifier
IN1 2
12 OUT1
PRE
3
GND
Thermal protection circuit
10
Power
GND
8
OUT2
REF amplifier
IN2 4
Input amplifier
Output amplifier
Ripple Filter Block
Pop noise prevention Block
1
Ripple
Filter
6
P.P
Application Circuit Example
LA42052
Ripple
Filter
1
C3
+
100μF
/16V
*
IN1
PRE
GND
IN2
STB
2
3
4
5
C1
1μF
/10V
*
C2
1μF
/10V
P.P
6
C4 +
4.7μF
/16V
VCC
OUT2
N.C.
7
8
9
C5
1000μF C6
/25V + 470μF
/16V
+
RL
PWR
GND
N.C.
OUT1
N.C.
10
11
12
13
C7
+ 470μF
/16V
RL
No.A0314-3/7
LA42052
External Components
C1, C2 : Input coupling capacitors, which are recommended to be 1.0μF or less.
The input pin voltage 2VBE ( about 1.4V).
Determine the polarity orientation of these capacitors based on the DC current from the circuit
connected to the LA42052 front end.
C3
: The recommended value for the Ripple filter capacitor is 100μF.
C4
: The recommended value for the P.P capacitor 4.7μF. It is a capacitor for there being small Pop sound.
C5
: Power supply capacitor.
C6, C7 : The recommended value for the output capacitor is 470μF.
1. Standby Function (Pin 5)
By means of controlling pin 5 to high and low, the power
Supply can be set to ON and OFF.
Control Voltage of pin 5
Pin 5 voltage
Amplifier
0 to 0.5
OFF
Standby
ON
1.0 to 5.0
ON
OFF
When the impression voltage of VS is high,
I want to stop 5 pin inflow current.
Restriction resistance (RSTB) is inserted in a case.
VS
RSTB
2kΩ
5
2kΩ
VS = 5V, RSTB = 5.1kΩ
5 pin inflow current = about 750µA
5 pin voltage = about 1.2V
2. Ripple filter and Mute function (Pin 1)
Pin voltage is approx. 1/2 VCC
The recommended value for the Ripple filter capacitor is 100µF.
Muting :
The output signal can be controlled by connecting pin 1(Ripple filter) to ground via a resistance of 300 to 500Ω.
If resistance is higher than 750Ω, the suppression ratio will decrease.
3. Input Pin (Pin 2,4)
Voltage at the input pins is approx. 2VBE(about 1.4V)
Determine the polarity orientation of these capacitors based on the DC current from the circuit
Connected to the LA42052 front end.
Input resistance is approx. 30kΩ (typ)
The recommended value for the input capacitor is 1.0µF.
4. P.P (Pin 6)
The Pin 6 is Terminal for there being small pop sound
at the time of power supply ON/OFF.
C4 recommends 4.7µF.
When capacitance is higher 10µF, the sound will not
be cut off when setting the power supply OFF.
VCC
5kΩ
6
VCC – VCE (about 0.3V) – 5.6V
Pin 6 voltage =
+5.6V
2
C4 +
4.7μF
5kΩ
No.A0314-4/7
LA42052
Usage Notes
1. Lightening (power supply - output short-circuit) and ground fault (GND - output short-circuit) protective circuits are
not incorporated. Due care must be taken during handling of the product.
2. The thermal protective circuit is incorporated and activated when the junction temperature (Tj) rises above about
160°C.
This circuit controls the output gradually to the attenuated condition.
3. Always ensure the sufficient margin for the supply voltage, etc. to operate the product within the area where the
maximum rating will never be exceeded. Namely, the maximum rating may be exceeded due to the slight change in
conditions, resulting in damage, if the product is used around the maximum rating.
No.A0314-5/7
LA42052
ICCO – VCC
PO – VCC
10
RL = 8Ω
Rg = 0
Rg = 600Ω
f = 1kHz
THD = 10%
8
60
Output power, PO – W
Quiescent current, ICCO – mA
80
40
20
6
4
2
0
0
2
4
6
8
10
12
14
16
18
20
22
0
4
24
6
8
100
7
5
3
2
THD – PO
10
7
5
3
2
10kHz
1kHz
0.1
7
5
3
2
100Hz
0.01
0.1
3
5
7
2
1
3
5
7
3
2
22
3
2
1
7
5
3
2
0.1
7
5
3
2
2 3
5 7 100
2 3
–6
–8
– 10
VCC = 18V
RL = 8Ω
Rg = 600Ω
VO = 0dBm (at f = 1kHz)
– 14
– 16
2 3
5 7 100
2 3
5 7 1k
2 3
5 7 10k
2 3
Channel separation, CH Sep. – dB
–4
– 12
5 7 1k
2 3
5 7 10k
2 3
5 7100k
2 3
5 7100k
CH Sep. – f
0
0
Response – dB
20
Frequency, f – Hz
–2
VCC = 18V
RL = 8Ω
VO = 0dBm
Rg = 10kΩ
– 10
– 20
– 30
– 40
ch2
→c
h1
ch1
→c
h2
– 50
– 60
– 70
5 7100k
10
2 3
5 7 100
2 3
Frequency, f – Hz
5 7 1k
2 3
5 7 10k
Frequency, f – Hz
VNO – Rg
SVRR – VCC
0
VCC = 18V
RL = 8Ω
DIN AUDIO
Ripple rejection ratio, SVRR – dB
Output noise voltage, VNO – mVrms
18
10
7
5
10
10
Response – f
0.2
0.1
0
100
16
0.01
2
2
0.3
14
VCC = 18V
RL = 8Ω
Rg = 600Ω
PO = 1W
Output power, PO – W
10
12
THD – f
100
7
5
VCC = 18V
RL = 8Ω
Rg = 600Ω
1
7
5
3
2
10
Supply voltage, VCC – V
Total harmonic distortion, THD – %
Total harmonic distortion, THD – %
Supply voltage, VCC – V
RL = 8Ω
Rg = 0Ω
fr = 100Hz
VCCR = 0dBm
CVCC = 1μF
– 10
– 20
– 30
– 40
– 50
– 60
– 70
– 80
2
3
5
7 1k
2
3
5
7 10k
2
3
Resistance for signal generation, Rg – Ω
5
7 100k
4
6
8
10
12
14
16
18
20
22
24
Supply voltage, VCC – V
No.A0314-6/7
LA42052
– 10
– 20
SVRR – fr
0
VCC = 18V
RL = 8Ω
Rg = 0Ω
VCCR = 0dBm
CVCC = 1μF
Ripple rejection ratio, SVRR – dB
Ripple rejection ratio, SVRR – dB
0
– 30
– 40
– 50
– 60
– 70
– 80
10
2
3
5 7 100
2
3
5 7 1k
2
3
5 7 10k
Ripple frequency, fr – Hz
8
Power dissipation, Pd – W
7
– 10
– 20
SVRR – VCCR
VCC = 18V
RL = 8Ω
Rg = 0Ω
fr = 100Hz
CVCC = 1μF
SVRR = 20log (VO/VCCR)
– 30
– 40
– 50
– 60
– 70
– 80
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
2.2
Power supply ripple voltage, VCCR – Vrms
Pd – PO
RL = 8Ω
Rg = 600Ω
f = 1kHz
6
5
4
3
2
1
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.
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controlled under any of applicable local export control laws and regulations, such products may require the
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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, 2008. Specifications and information herein are subject
to change without notice.
PS No.A0314-7/7