LA4425A_10 [SANYO]
For Car Radio and Car Stereo 5W Power Amplifier with Very Few External Parts; 汽车收音机和车载立体声5W功率放大器只需极少的外部零件
| 型号： | LA4425A_10 |
| 厂家： | 
SANYO SEMICON DEVICE |
| 描述： | For Car Radio and Car Stereo 5W Power Amplifier with Very Few External Parts |
| 文件： | 总9页 (文件大小：138K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Ordering number : EN3309D
Monolithic Linear IC
For Car Radio and Car Stereo
LA4425A
5W Power Amplifier
with Very Few External Parts
Overview
The LA4425A is a 5W power amplifier with very few external parts. The smallest package in the industry
[SIP-5H(TO-126 type)]. Only two external parts (Only I/O coupling capacitors). Almost no evaluation, adjustment and
check of its functions as a power IC required and simplified control
Functions
• Wide operation supply range → 5 to 16V
• On-chip protection:
- Over-voltage protection
- Thermal protection
- Output D.C. short protection .
• On-chip pop noise reducing circuit
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
Unit
V
Maximum supply voltage
V
max
Rg = 0
18
50
CC
Surge maximum supply voltage
V
surge
Giant pulse 200ms
Rise time 1ms
V
CC
Maximum output current
Allowable power dissipation
Operating temperature
Storage temperature
I
peak
3.3
7.5
A
O
Pd max
Topr
With infinite heat sink
W
°C
°C
-30 to +80
-40 to +150
Tstg
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/53096HA(II)/20293TS/9200TA,TS(KOTO)/3050TA,TS(AF) No.3309-1/9
LA4425A
Operating Conditions at Ta = 25°C,
Parameter
Symbol
Conditions
Ratings
Unit
V
Recommended supply voltage
Recommended load resistance
Operating voltage range
V
13.2
4
CC
R
L
Ω
V
op
5 to 16
2 to 8
V
CC
op
Operating load resistance range
R
Under conditions where maximum ratings are
not exceeded
Ω
L
Electrical Characteristics at Ta = 25°C, V
= 13.2V, R = 4Ω, f = 1 kHz, Rg = 600Ω,
L
CC
specified board/specified circuit, 30×30×1.5mm3 thick aluminum used
Ratings
Parameter
Quiescent current
Symbol
Conditions
Unit
min
typ
max
130
I
65
45
5
mA
dB
W
CCO
Voltage gain
Output power
V
V
= 0dBm
43
4
47
G
O
P
P
1
2
13.2 V / 4Ω, THD = 10%
14.4 V / 4Ω, THD = 10%
O
5
6
W
O
Total harmonic distortion
Output noise voltage
Ripple rejection ratio
THD
V
= 2V
0.1
40
40
1.0
%
O
V
Rg = 0, BPF = 20 Hz to 20 kHz
Rg = 0, BPF = 20 Hz to 20 kHz
30
30
dB
dB
NO
SVRR1
V
= 0dBm, f = 100Hz
R
R
SVRR2
Rg = 0, BPF = 20 Hz to 20 kHz
= 0dBm, f = 100 Hz
47
dB
V
R
R
Over-voltage attack
Starting time
V
X
Rg = 0
21.5
0.35
50
V
s
CC
t
S
Input resistance
Roll-off frequency
R
f
kΩ
Hz
kHz
°C
IN
40
L
f
90
H
Thermal operating temperature
Tc
125
Package Dimensions
unit : mm (typ)
3031C
Pd max -- Ta
10
Al heat sink
.
mounting toque 39N cm
9.5
with sillicone grease applied.
2.7
3.2
8
7.5
Infinite heat sink
(2.0)
100×100×1.5mm3
50×50×1.5mm3
30×30×1.5mm3
6
5.7
4.3
4
2.9
1.1
1.5
2
No heat sink
1.2
0
-30 -20
0
20
40
60
80
100
Ambient temperature, Ta -- °C
1
5
(0.75)
2.0
0.5
1.2
0.6
SANYO : SIP5H
No.A0195-2/9
LA4425A
Sample Application Circuit
V
13.2V
CC
+
• On-chip overvoltage protection
• On-chip thermal protection
• On-chip pop noise reducing circuit
• On-chip output D.C. short protection
5
1000µF
Ci 2.2µF
+
1
Co 1000µF
+
LA4425A
3
4
2
speaker
4Ω
Pin Voltage at V
= 13.2V
CC
Small signal
Large signal
Characteristics
Pin No.
Input
1
Output
V
CC
GND
2
GND
3
4
5
(≈ 2V
)
(≈ 1/2V
)
(V
)
Pin voltage
(reference value)
BE
CC
CC
0V
0V
1.4V
6.5V
13.2V
IC Usage Notes
Maximum ratings
If the IC is used in the vicinity of the maximum ratings, even a slight variation in conditions may cause the maximum
ratings to be exceeded, thereby leading to a breakdown.
Printed circuit board
When drawing the printed circuit pattern, refer to the sample printed circuit pattern. Be careful not to form a feedback
loop between input and output.
Comparison of External Components
External Parts
Output coupling capacitor
Input coupling capacitor
Bootstrap capacitor
Our ICs now in use
LA4425A
{
{
{
{
{
{
{
{
-
Feedback capacitor
-
Filter capacitor
-
Phase compensation capacitor
-
Oscillation correction polyester
film capacitor
{
-
Oscillation correction resistor
{
-
Total
8 pcs.
2 pcs.
Note: The power supply capacitor is not counted as a power IC part.
No.A0195-3/9
LA4425A
Sample Printed Circuit Pattern
LA4425A
GND
CV =1000µF
−
+
5
1
CC
V
CC
+
−
IN
−
+
OUT Co=1000µF
Ci=2.2µF GND
Cu-foiled side 78.0×29.0mm2
I
-- V
V
-- V
CC
CCO
CC
N
12
100
80
60
40
20
0
R =4Ω
R =4Ω
L
L
Rg=0
Rg=0
10
8
6
4
2
0
0
2
4
6
8
10 12 14 16 18 20 22 24
0
2
4
6
8
10 12 14 16 18 20 22 24
Supply voltage, V
CC
-- V
Supply voltage, V
-- V
CC
P
-- V
THD -- P
O
IN
O
10
10
V
=13.2V
7
V
=13.2V
CC
CC
7
5
R =4Ω
R =4Ω
5
L
L
f=1kHz
f=1kHz
3
2
Rg=600Ω
Rg=600Ω
3
2
1.0
7
5
1.0
7
5
3
2
3
2
0.1
7
5
0.1
3
7
5
2
5
7
2
3
5
7
2
3
5
7
2
3
5
7
2
3
5
7
1.0
0.1
1.0
10
10
100
Input voltage, V -- mV
IN
Output power, P -- W
O
f Response
THD -- f
1
0
3
2
V
=13.2V
CC
R =4Ω
L
Rg=600Ω
-1
V =2V(P =1W)
O
O
1.0
-2
-3
7
5
f
f
H
L
-4
3
2
-5
-6
-7
0.1
V
=13.2V
CC
-8
7
5
R =4Ω
L
Rg=600Ω
-9
V =0dBm
O
-10
10
3
2
3
5
2
3
5
2
3
5
2
3
5
3
5
7
2
3
5
7
2
3
5
7
2
3
100
1k
10k
100k
100
1k
10k
Frequency, f -- Hz
Frequency, f -- Hz
No.A0195-4/9
LA4425A
THD -- V
CC
P
-- V
O
CC
5
12
10
8
f=1kHz
R =4Ω
R =2Ω
L
L
Rg=600Ω
f=1kHz
3
2
THD=10%
V =2V(P =1W)
O
O
Rg=600Ω
R =4Ω
L
1.0
7
5
6
3
2
4
2
0.1
7
5
0
6
8
10
12
14
16
18
20
8
10
12
14
16
18
20
Supply voltage, V
CC
-- V
Supply voltage, V -- V
CC
I
, Pd -- P
I
, Pd -- P
CC
O
CC O
700
600
500
400
300
200
100
0
7
1200
1000
800
600
400
200
0
R =2Ω
R =4Ω
L
I
CC
L
f=1kHz
f=1kHz
I
6
5
4
3
2
1
0
Rg=600Ω
CC
Rg=600Ω
10
8
6
4
2
0
V
=16V
CC
V
=16V
CC
V
=13.2V
CC
V
=13.2V
CC
7
2
3
5
7
2
3
5
7
7
2
3
5
7
2
3
5
7
2
0.1
1.0
10
0.1
1.0
10
Output power, P -- W
Output power, P -- W
O
O
V
-- Rg
SVRR -- V
CC
NO
50
40
30
20
10
0
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
V
L
=13.2V
CC
R =4Ω
BPF=20Hz to 20kHz
Rg=0→0.12mV
R =4Ω
L
V =0dBm
R
f =100Hz
R
Rg=0
BPF=20Hz to 20kHz
7
2
3
5
7
2
3
5
7
2
8
9
10
11
12
13
14
15
16
17
18
19
1k
10k
100k
Signal source resistance, Rg -- Ω
Supply voltage, V
-- V
CC
SVRR -- V
SVRR -- f
R
R
50
40
30
20
10
0
50
40
30
20
10
0
V
=13.2V
V
=13.2V
CC
CC
L
R =4Ω
R =4Ω
L
Rg=0
f =100Hz
R
V =0dBm
Rg=0
R
BPF=20Hz to 20kHz
BPF=20Hz to 20kHz
0
200
400
600
800
1000
1200
0
5
7
2
3
5
7
2
100
1k
Power supply ripple, V -- mVrms
Ripple frequency, f -- Hz
R
R
No.A0195-5/9
LA4425A
I
-- Ta
V
-- Ta
N
CCO
80
60
40
20
0
10
V
=13.2V
V
=13.2V
CC
CC
R =4Ω
R =4Ω
L
L
Rg=0
Rg=0
8
6
4
2
0
-60
-40
-20
0
20
40
60
80
100
-60
-40
-20
0
20
40
60
80
100
Ambient temperature, Ta -- °C
Ambient temperature, Ta -- °C
P
-- Ta
O
6
5
4
3
2
1
V
=13.2V
V
=13.2V/4Ω
CC
CC
R =4Ω
Rg=0
L
f=1kHz
Switch"ON"locus
THD=10%
t
s
GND
0
-60
-40
-20
0
20
40
60
80
100
0.2s/div
Ambient temperature, Ta -- °C
V
=13.2V/4Ω
CC
Rg=0
"OFF"locus
GND
0.2s/div
No.A0195-6/9
LA4425A
Instructions and Precautions
• Connect a capacitor of 1000pF across pins c and d for external disturbance path.
• Be careful of the ground line artwork when laying out the printed circuit pattern. Arrange so that the Sg route and load
current flow-in route do not overlap. Refer to the recommended printed circuit pattern or make slits, etc. at pins d
and e.
DUAL Printed Circuit Pattern Example
GND
OUT1
1
IN1
V
GND
IN2
CC
1
OUT2
Cu-foiled side 45.0×75.0mm2
• Short Circuit Tests
+
SW1
SW2
SW3
+
13.2V
+
LA4425A
SW4
SANYO Semiconductor's recommended printed circuit board: Apply V =13.2V using a 30×30×1.5mm3 thick
CC
aluminum board. The IC will be protected from the DC/AC shorting of switches 1 to 4 above. However, be careful not
to damage the IC by turning V
CC
”ON” when DC short (SW 1 or SW 2) is on.
• Power Supply Positive Surge
JASO tester
Application of giant pulse
2.2µF
+
0.15µF
13.2V
+
Rg
620Ω
LA4425A
1000µF
R
L
The over-voltage protector (V X ≈ 21.5V) inside the IC is used to cut all bias routes and reverse bias between B-E of
CC
output stage elements, in order to increase the power line’s capability of handling positive surge. This means, of course,
that a V
(V
) type output stage element is used instead of the V ) type.
(V
CES CBO
CEO CER
No.A0195-7/9
LA4425A
• Load Resistance and Misoperation
It should be noted that when R < 2Ω and V
is high, and the switch is turned “ON” when setting is for a signal
CC
L
(THD = 10%), the ground detector (current × voltage Schmitt circuit) operates momentarily.
• Precautions on TaB
If power voltage is applied to the IC substrate (the heat sink on a set), the IC structure is such that the PN junctions
may be burned, causing deterioration or destruction. Consult SANYO Semiconductor’s Quality Assurance
Department with regard to the energy handling capability (voltage peak value, pulse width). Also, the IC TaB
(substrate) is connected to pin 3, large signal GND.
• Test of +V
to Output Pin
CC
Floating
+
+
b
+
LA4425A
a
13.2V
The power pin is in a floating state when a power capacitor is connected, so if +V
upper power transistor inside the IC will be damaged.
touches output lines a and b , the
CC
The LA4425A has a protective bypass route inside the IC.
• Starting Time (t )
s
This is set at 0.35sec/typ, but it can be made shorter by making input capacitor Ci smaller, or longer by making it
larger.
• Pop noise
The pop noise prevention circuit operates to reduce pop until Rg reaches 50kΩ. However, if Rg is left open, the
charging route of input capacitor Ci is lost, so the pop noise reduction circuit stops operating and click noises become
louder.
• VG/OSC
The voltage gain is fixed at 45dB inside the IC. It is impossible to change it externally.
Phase compensation capacitors (350pF/total) are connected between individual stages inside the IC, and the open
loop gain is low. In addition, the upper and lower drives are made equivalent so that final stage current gain is
adjusted, providing a measure against unwanted high-frequency parasitic oscillation peculiar to power IC’s.
• BTL Connection
Connection is impossible with IC alone.
• Reverse Mounting of IC
The pin assignment is such that there is no danger of damage.
• T.S.D (Thermal Shutdown) Operating Temperature
30×30×1.5mm3 thick Al board
Ta=25°C
0
20
40
60
80 100 120 140 160 180
Tc (°C)
No.A0195-8/9
LA4425A
T.S.D is capable of starting operation at Tc 120 to 130°C. When this is converted to junction temperature (Tj) according to
the formula below.
Tj ≈ 165C,
.
Tj = Qjc Pd + Tc
As T.S.D operation progresses, the output pin bias voltage drops, and it becomes harder to drive the upper waveform.
Therefore, the current (I ) and power (P ) show a tendency to decrease.
CC
O
Proper Cares in Mounting Radiator Fin
.
1. The mounting torque is in the range of 1. The mounting torque is in the range of 39 to 59 N cm.
2. The distance between screw holes of the radiator fin must coincide with the distance between screw holes of the IC.
3. The screw to be used must have a head equivalent to the one of truss machine screw or binder machine screw defined
by JIS. Washers must be also used to protect the IC case.
4. No foreign matter such as cutting particles shall exist between heat sink and radiator fin. When applying grease on
the junction surface, it must be applied uniformly on the whole surface.
5. Because the heat sink mounting tab and the heat sink are at the same electric potential as the chip’s GND, care must
be taken when mounting the heat sink on more than one device.
6. IC lead pins are soldered to the printed circuit board after the radiator fin is mounted on the IC.
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.3309-9/9
相关型号：
LA4425PV
Monolithic Linear IC For Car Radio and Car Stereo 5W Power Amplifier with Very Few External Parts
SANYO
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