Ordering number : ENA0894
Monolithic Linear IC
LA42201
Overview
Audio Output for TV application
BTL 20W Monaural Power Amplifier
The LA42201 is a 20W monaural power amplifier IC and optimal for use as the audio output power amplifier in TV
application.
Functions
•
20W Monaural (V
CC
= 13V, R
L
= 4Ω, THD = 10%)
•
Built-in mute function.
•
Built-in various protection circuit (short to power/short to ground/load shorting/thermal/overvoltage protection).
Specifications
Maximum Ratings
at Ta = 25°C
Parameter
Maximum supply voltage
Allowable power dissipation
Maximum junction temperature
Thermal resistance
Operating temperature
Storage temperature
Symbol
VCC max
Pd max
Tj max
θjc
Topr
Tstg
No signal
Infinitely large heat sink
Conditions
Ratings
21
25
150
3
-25 to +75
-40 to +150
Unit
V
W
°C
°C/W
°C
°C
Operating Conditions
at Ta = 25°C
Parameter
Recommended supply voltage
Recommended load resistance
Allowable operating supply
voltage range
Symbol
VCC
RL
VCC op
Conditions
Ratings
13
4
8 to 16
Unit
V
Ω
V
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.
82207 MS PC 20060303-S00003 No.A0894-1/6
LA42201
Electrical Characteristics
at Ta
=
25°C, VCC = 13V, RL = 4Ω, f = 1kHz, Rg = 600Ω
Parameter
Quiescent current
Output power
Total harmonic distortion
Voltage gain
Output noise voltage
Ripple rejection ratio
Mute attenuation value
Mute control voltage (pin 6)
Symbol
ICCO
PO
THD
VG
VNO
SVRR
ATT
VMUTE-H
VMUTE-L
Input resistance
Ri
Rg = 0
THD = 10%
PO = 1W
VO = 0dBm
Rg = 0, BPF = 20Hz to 20kHz
Rg = 0, fR = 100Hz, VCCR = 0dBm
VO = 1Vrms, BPF = 20Hz to 20kHz
Mute OFF
Mute ON
30
70
2.5
0
35
50
28
Conditions
min
30
17
Ratings
typ
50
20
0.06
30
0.2
40
80
5.0
1.0
65
0.3
32
0.4
max
100
mA
W
%
dB
mVrms
dB
dB
V
V
kΩ
Unit
Package Dimensions
unit : mm (typ)
3286
30.0
Pd max – Ta
Infinitely large heat sink
Clamping torque : 39N.cm
Silicone grease application
25.0
2.7
3.6
10.4 max
10.0
4.5
1.3
Allowable power dissipation, Pd max – W
25.0
20.0
15.0
5°C/W heat sink
15.0
15.6
14.5
17.0
21.5
22.3
8.8
10.0
10°C/W heat sink
9.6
20°C/W heat sink
5.4
9.4
5.8
3.3
0.7
5.0
1.27
0.6
0.45
8.23
3.15
0
–
20
0
20
40
60
80
100
120
Ambient temperature, Ta – °C
SANYO : 220-7H
No.A0894-2/6
LA42201
Block Diagram
Ripple
5
Filter
VCC/ground shorting protection circuit
Load shorting protection circuit
Thermal protection circuit
over voltage protection circuit
4
GND
3
MUTE 6
Output amplifier
IN 7
Ri=
50kΩ
1
Input amplifier
2
+OUT
VCC
-OUT
Test Circuit
LA42201
Ripple
Filter
5
+ CRF
100μF
/16V
RMute
10kΩ
-OUT1
1
VCC
2
+OUT1
3
GND
4
Mute
6
CMute
1μF
+ /10V
IN
7
+
CVCC
1000μF
/25V
CIN
0.47μF
VMute
RL = 4Ω
Description of external parts
CIN
CRF
CMute
CVCC
: Input coupling capacitor, for which 0.47μF is recommended. Since the input pin potential is about 1/2 VCC,
the ceramic capacitor with small leak current is recommended.
: Ripple filter capacitor, for which 100μF is recommended. Note that the capacitance below 100μF will cause
decrease in the ripple removal ratio.
: Capacitor for mute.
: Power capacitor.
No.A0894-3/6
LA42201
Cautions
Oscillation of the capacitor between the output pin and GND may cause oscillation. In such an event, insert 0.1μF
+2.2Ω between pins 1 and 3.
1. Rise and fall of AMP VCC (2Pin), Mute (6Pin)
2 Pin VCC
1/3 Pin OUT
6 Pin Mute
Mute
1s
Mute
1s
•
When raising AMP, always raise the Mute pin 6 in 1sec after the VCC pin 2.
•
When falling AMP, always fall the VCC pin 2 in 1sec after the Mute pin 6.
Above procedure will alleviate the shock sound at rise and fall.
2. Mute function (pin 6)
The mute function is turned ON with the pin 6 voltage of 1.0V or less and OFF with the voltage of 2.5V or more.
The inrush current to pin 6 is about 50μA when VMute is 5V and RMute is10kΩ.
VMute
RMute
200Ω
6
+
CMute
100kΩ
50μA
GND
Cautions for use
1. Short-circuit (power – output short-circuit), ground fault (GND – output short-circuit), and load short-circuit
protective circuits are incorporated. They are activated in case of abnormal connection.
These circuits remain active while such abnormal connection continues and is reset automatically when the
abnormality is removed.
2. The thermal protection circuit is incorporated and is activated when the junction temperature (Tj) rises to about 170°C
or more. The output is controlled to return gradually to the attenuated state.
3. When the product is used near the maximum rating, even the slightest change in the condition may cause exceeding of
the maximum rating, resulting possibly in breakdown. Take the sufficient margin for the supply voltage, etc. and
always use the product within a range never exceeding the maximum rating.
No.A0894-4/6
LA42201
120
ICCO/VN – VCC
ICCO : RL = open
VN : RL = 4Ω
Rg = 0Ω
VN
12
35
PO – VCC
THD = 10%
RL = 4Ω
Rg = 600Ω
f = 1kHz
Quiescent current, ICCO – mA
100
10
30
Output power, PO – W
25
80
8
VN – V
20
60
I CCO
6
15
40
4
10
20
2
5
0
8
0
0
2
4
6
8
10
12
14
16
18
20
0
22
9
10
11
12
13
14
15
16
Supply voltage, VCC – V
10
7
5
3
2
1
7
5
3
2
0.1
7
5
3
2
0.01
0.1
2
3
5
7 1
2
3
THD – PO
Supply voltage, VCC – V
10
7
5
3
2
1
7
5
3
2
0.1
7
5
3
2
0.01
2 3
5 7 100
2 3
5 7 1k
2 3
5 7 10k
2 3
5 7
100k
THD – f
Total harmonic distortion, THD – %
10kHz
1kHz
100Hz
5 7 10
2
3
5 7 100
Total harmonic distortion, THD – %
VCC = 13V
RL = 4Ω
Rg = 600Ω
VCC = 13V
RL = 4Ω
Rg = 600Ω
PO = 1W
10
Output power, PO – W
0.2
0
–
0.2
–
0.4
Frequency, f – Hz
0.4
Response – f
VNO – Rg
VCC = 13V
RL = 4Ω
BPF = 20Hz to 20kHz
Output noise voltage, VNO – mVrms
2 3
5 7 10k
2 3
5 7100k
0.3
Response – dB
–
0.6
– 0.8
–
1
–
1.2
–
1.4
–
1.6
–
1.8
–
2
10
0.2
0.1
VCC = 13V
RL = 4Ω
Rg = 600Ω
VO = 0dBm (f = 1kHz)
2 3
5 7 100
2 3
5 7 1k
0
10
2 3
Frequency, f – Hz
0
Resistance for signal generation, Rg –
Ω
5 7 100
2 3
5 7 1k
2 3
5 7 10k
2 3
5 7
100k
SVRR – VCC
Ripple rejection ratio, SVRR – dB
Ripple rejection ratio, SVRR – dB
–
10
RL = 4Ω
Rg = 0Ω
fr = 100Hz
VCCR = 0dBm
CVCC (CVCC) = 1μF
0
SVRR – fr
VCC = 13V
RL = 4Ω
Rg = 0Ω
VCCR = 0dBm
CVCC (CVCC) = 1μF
–
10
–
20
–
20
–
30
–
30
–
40
–
40
–
50
8
10
12
14
16
–
50
10
2 3
5 7 100
2 3
5 7 1k
2 3
5 7 10k
2 3
5 7
100k
Supply voltage, VCC – V
Ripple frequency, fr – Hz
No.A0894-5/6
嵌入式系统
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