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Ordering number:ENN3227A
Monolithic Linear IC
LA4630N
9V/12V 3-Dimension Power IC for
Radio Cassette Recorders
Features
• Stereo section 9V/33W×2, 12V/35W×2 : noise filter
capacitorless power.
• Super bus section 9V/36W, 12V/310W : output ca-
pacitor, B-S capacitorless power.
This chip employs technology for eliminating pins and
external connections to realize 3-dimensional power on a
single chip. This IC is a single package power IC for
making sound systems with punch.
• On-chip pop noise suppressor.
• On-chip power switch circuit.
• External and mute functions on chip.
• Protection functions on chip (thermal protection circuit
and BTL section RL short protection circuit)
Package Dimensions
unit:mm
3109-SIP18H
[LA4630N]
37.0
30.0
1
1.5 2.0 0.5 1.0
18
4.5
0.4
2.25
Specifications
Maximum Ratings at Ta = 25˚C
Parameter
Symbol
Maximum supply voltage
Thermal resistance
VCC max
θj-c
Maximum output current
Allowable power dissipation
IO peak
Pd max
Operating temperature
Topr
Storage temperature
Tstg
*1 : Operational notes on the maximum supply voltage.
*1 no signal
Conditions
With infinite heat sink
SANYO : SIP18H
Ratings
Unit
20 V
2 ˚C/W
3A
37.5 W
–20 to +75 ˚C
–40 to +150 ˚C
Recommended Operating Conditions at Ta = 25˚C
Parameter
Symbol
Recommended supply voltage
VCC
Recommended load resistance
RL
Operating voltage
VCC op
*2 : The upper limit for VCC op is VCC max – 2V.
*2
Conditions
Ratings
Unit
9V
12 V
3 to 8
5 to 18 V
Continued on next page.
Any and all SANYO 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 representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO 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 products described or contained
herein.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
40500TN (KT)/D191TH/5150TA, TS (GTPS) No.3227–1/8

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LA4630N
Continued from preceding page.
FRONT L/R
BTL
VCC max
Conditions
RL 3
RL 3
20V
RL 3
RL 3
RL 3
RL 3
RL 4
RL 5
RL 6
RL 7
21V
22V No signal
Front L/R input with capacitor Rg=0
23V BTL L/R input without capacitor Rg=0
24V
RL 3
RL 8
24V
For power supply transistor regulation, the equivalent power line resistance is 3or greater.
[Precaution concerning the metal]
Select PO with a goal of a rated load/rated supply voltage of RL=3 to 8and VCC=5 to 18V and design to avoid
exceeding the package Pd max of 37.5W. For heavy loads or high VCC, the drive design is involved and the power
effect deteriotates, so pay attention to these factors.
Operating Characteristics at Ta = 25˚C, VCC=9V, RL=3, f=1kHz
Parameter
Symbol
Conditions
Quiescent flow-in current
Standby current
Power switch pin flow-in current
Mute supply flow-in current
[Stereo Section]
Output power
Total harmonic distortion
Input resistance
Voltage gain
Output noise voltage
Ripple rejection
Channel separation
Muting attenuation
Low-region roll off frequency
High-region roll off frequency
[Super Bus Section]
Output power
Total harmonic distortion
Input resistance
Voltage gain
Output noise voltage
Ripple rejection
Muting attenuation
Low-region roll off frequency
High-region roll off frequency
Output offset voltage
ICCO
IST
ISW
ICCm
PO1
PO2
THD
Ri
VG
VNO
SVR
CH sep
Att
fL
fH
VCC=9V, THD=10%
VCC=12V, THD=10%
VO=1V
Rg=0, BPF=20Hz to 20kHz
fR=100Hz, VR=0dBm
Rg=10k, VO=0dBm
VO=0dBm
At VG=–3dB
At VG=–3dB
PO1
PO2
THD
Ri
VG
VNO
SVR
Att
fL
fH
VOFF
VCC=9V, THD=10%
VCC=12V, THD=10%
VO=1V
Rg=0, BPF=20Hz to 20kHz
fR=100Hz, VR=0dBm
VO=0dBm
VG : –3dB
VG : –3dB
Rg=0
Ratings
min typ
35 70
1.0
10.0
35.0
max
140
10.0
70.0
Unit
mA
µA
mA
mA
2.2 3.0
W
4.2 5.0
W
0.20
1.0 %
50 k
43 45 47 dB
0.15 0.40 mV
45 55
dB
45 50
dB
80 dB
50 Hz
50 kHz
5.0
8.0
43
50
–150
6.0
10.0
0.20
30
45
0.3
60
80
5
40
1.0
47
0.6
+150
W
W
%
k
dB
mV
dB
dB
Hz
kHz
mV
No.3227–2/8

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LA4630N
Block Diagram
Note 1 : The motor should not be connected to the power switch pin, since transient noise may appear on the amplifier
outputs when the motor is started or stopped.
Note 2 : Audio mute is enabled by connecting a 300resistance between the DC pin and ground. DC bias control of
both the stereo (L ch, R ch) and BTL (super bass) channels is enabled, and all audio output signals can be
muted by controlling the MUTE pin.
No.3227–3/8

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Sample Printed Circuit Pattern
LA4630N
* : Insert 0.15µF between power supply and ground at the root of the pins.
Pin Voltages
Pin No.
123456789
Name
OUT PWR OUT BS OUT PWR BS OUT VCC
No GND Inv
R
R GND L
L
1
21
Pin Voltage
(V)
4.0
0
4.0 8.1 4.5
0
8.1 4.0 9.0
Pin No.
10 11 12
Name
DC
IN
L
IN
R
Pin Voltage
(V)
4.5
1.4
1.4
PO Chart
Item
FRONT
L/R
BTL
(THD=10%)
RL 9V 12V 15V
81.4W 2.5W 3.9W
61.75W 3.2W 5.0W
42.4W 4.3W 6.4W
33.2W 5.6W
83.2W 6.4W 11.0W
64.0W 8.1W 13.5W
45.3W 10.4W –
36.4W 12.4W –
13
PRE
GND
0
14
IN
No
21
[mV]
15
NF
Inv
1.4
16 17 18
NF PWR VCC
No SW
2
1.4 9.0 9.0
Pd max Chart
Item
FRONT
L/R
BTL
RL
8
6
4
3
8
6
4
3
9V
2.0W
2.4W
3.1W
3.8W
2.8W
3.6W
5.0W
6.3W
12V
3.2W
3.8W
5.0W
6.2W
4.8W
6.0W
8.8W
11.2W
15V
4.6W
5.7W
5.4W
7.2W
9.0W
No.3227–4/8

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LA4630N
No.3227–5/8