SANYO ENA5718

Ordering number : ENA5718
Monolithic Linear IC
Audio Output for Radio Cassette Recorders
LA4227
3W × 2ch Power Amplifier
Overview
LA4227 is a 3W 2-channel power amplifier.
This IC requires few external components and is ideal for power amplifier used for radio cassette players/recorders.
Functions
• 3W × 2 channel (VCC = 9V, RL = 3Ω)
• Standby switch on chip
• Thermal shutdown protector on chip
Maximum Ratings at Ta = 25°C
Parameter
Maximum supply voltage
Allowable power dissipation
Symbol
VCC max
Pd max
Conditions
Ratings
Rg = 0 (No signal)
Arbitrarily large heat sink
Unit
20
V
4.0
W
Operating temperature
Topr
-20 to +75
°C
Storage temperature
Tstg
-55 to +150
°C
Operating Conditions at Ta=25°C
Parameter
Recommended supply voltage
Operating voltage range
Operating load resistance range
Symbol
Conditions
Ratings
VCC
VCC op
unit
9
Not exceeding the maximum ratings
RL op
Bridge
V
4.2 to 18
V
3 to 8
Ω
8
Ω
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 usingany 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.
83006 / 42706 MS JK B8-7553, B8-4892, B8-3581 No.A5718-1/4
LA4227
Electrical Characteristics at Ta = 25°C, VCC = 9V, RL = 4Ω, f = 1kHz, Rg = 600Ω, RNF = 43Ω
Parameter
Symbol
Ratings
Conditions
min
Quiescent current
ICCO
Voltage gain
VG
Rg = 0
VO = 0dBm
Voltage gain difference
∆VG
Total harmonic distortion
THD
Output power
PO1
PO = 0.25W (VO = 1V)
THD = 10%
PO2
RL = 3Ω, THD = 10%
PO3
Bridge, RL = 8Ω, THD = 10%
Output noise voltage
typ
Unit
max
10
20
40
mA
43.0
45.0
47.0
dB
2.0
dB
0.2
2.0
1.0
%
2.5
W
3.0
W
(4.7)
W
VNO1
Rg = 0, DIN AUDIO
VNO2
Rg = 10kΩ, DIN AUDIO
Channel separation
Chsep
VO = 0dBm, Rg = 10kΩ
45
55
dB
Ripple rejection
SVRR
Vr= 150mV, Rg = 0, fr = 100Hz, DIN AUDIO
40
52
dB
Standby current
Ist
Input resistance
Ri
21
30
0.3
1.0
mV
0.4
2.0
mV
10
µA
kΩ
Package Dimensions
unit : mm
3022B
19.0
12
0.4
7.62
6.45
7
(0.61) 2.54
5.12
3.6
6
1.25
1.3
0.5
0.51min (3.46)
3.5 4.26max
1
3.81
SANYO : DIP12F(300mil)
No.A5718-2/4
LA4227
Block Diagram
Application Circuit Example
No.A5718-3/4
LA4227
Recommended board Cu-foiled pattern (Actual size)
25.0
8.7
25.0
53.0
10.7
8.7
3.6
fin 1
0.5
8.0
8.0
12.0
10.7
0.5
3.6
fin2
Specifications of any and all SANYO Semiconductor 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.
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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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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 April, 2006. Specifications and information herein are subject
to change without notice.
PS No.A5718-4/4