Ordering number : ENA0319
Monolithic Linear IC
LA4262
Overview
Audio Output for Radio Cassette Recorder
Two-channel 7W Power Amplifier
The LA4262 is a two-channel 7W power amplifier IC.
The LA4262 only requires a minimal number of external components and thus is optimal for use as the audio output power
amplifier in radio cassette recorders.
Functions
•
Output : 7W×2 (V
CC
= 15V, R
L
= 3Ω)
•
Standby function
•
Pop noise reducing function
•
Ripple filter
•
Thermal protection circuit
Specifications
Maximum Ratings
at Ta = 25°C
Parameter
Maximum supply voltage
Allowable power dissipation
Thermal resistance
Operating temperature
Storage temperature
Symbol
VCC max
Pd max
θj-c
Topr
Tstg
Conditions
Rg = 0 (No signal)
With a infinity large heat sink
Ratings
24
25
3.0
-20 to +75
-40 to +150
Unit
V
W
°C/W
°C
°C
Operating Conditions
at Ta = 25°C
Parameter
Recommended supply voltage
Recommended load resistance
Allowable operating voltage range
Symbol
VCC
RL
VCC op
RL op
Under conditions where maximum ratings
are not exceeded
Operating load resistance range
2.7 to 8.0
Ω
Conditions
Ratings
15
3
5.0 to 22
Unit
V
Ω
V
Any and all SANYO Semiconductor products described or contained herein do not have specifications
that can handle applications that require extremely high levels of reliability, such as life-support systems,
aircraft's control systems, or other applications whose failure can be reasonably expected to result in
serious physical and/or material damage. Consult with your SANYO Semiconductor representative
nearest you before using any SANYO Semiconductor products described or contained herein in such
applications.
SANYO Semiconductor 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
products described or contained herein.
N1506 MS PC B8-4991 No.A0319-1/3
LA4262
Electrical Characteristics
at Ta
=
25°C, VCC = 15V, RL = 3Ω, f = 1kHz, Rg = 600Ω, in the specified circuit board
Parameter
Standby current
Quiescent current
Voltage gain
Total harmonic distortion
Output noise voltage
Output power
Symbol
Ist
ICCO
VG
THD
VNO
PO1
PO2
Channel separation
Ripple rejection ratio
Standby on voltage
Input resistance
Chsep
SVRR
Vst
Ri
Conditions
min
Standby pin→GND
Rg = 0
VO = 0dBm
PO = 1W
Rg = 0, DIN AUDIO
THD = 10%
VCC = 9V, RL = 4Ω. THD = 10%
VO = 0dBm, Rg = 0, DIN AUDIO
Vr = 0dBm, Rg = 0, fr = 100Hz, DIN AUDIO
6.0
1.5
50
50
1.5
20
20
33
Ratings
typ
1.0
30
35
0.15
0.05
7.0
2.0
60
60
5.0
30
40
max
10
80
37
0.6
0.2
μA
mA
dB
%
mV
W
W
dB
dB
V
kΩ
Unit
Package Dimensions
unit : mm (typ)
3024B
16
Pd max -- Ta
With a infinity large heat sink
100×100×1.5mm
3
Aluminum heat sink
mounting
conditions
Tightening
torque : 4kg·cm
Flat washer
silicone grease
applied
Allowable power dissipation, Pd max – W
26.8
20.0
4.0
15.0
14
12.5
12
10
8
7.0
6
4
3.6
3.2
2
7.0
(11.8) R1.7
13.2max
(8.4)
50×50×1.5mm
3
SANYO recommended
circuit board
Independent IC
1
1.4
0.5
2.54
10
(1.97)
1.0 min
6.0
0.4
2.0
SANYO : SIP10H
0
--20
0
20
40
60
80
100
120
140
160
Ambient temperature, Ta – ˚C
No.A0319-2/3
LA4262
Block Diagram
STANDBY
VCC
7
Standby
4
CH1 IN
10
Input
amplifier
channel 1
R f1
R Nf1
Predrive
amplifier
Output
amplifier
1
CH1 OUT
PRE
GND
9
R Nf2
REF
amplifer
Thermal shutdown
protection
2
Power
GND
R f2
CH2 IN
8
Input
amplifier
channel 2
Predrive
amplifier
Output
amplifier
3
CH1 OUT
Pop noise reduction
Ripple filter
6
P. P
5
FILTER
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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.
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and all semiconductor products fail with some probability. It is possible that these probabilistic failures
could give rise to accidents or events that could endanger human lives, that could give rise to smoke or
fire, or 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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Any and all information described or contained herein are subject to change without notice due to
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for the SANYO Semiconductor product that you intend to use.
Information (including circuit diagrams and circuit parameters) herein is for example only; it is not
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This catalog provides information as of November, 2006. Specifications and information herein are subject
to change without notice.
PS No.A0319-3/3
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