Ordering number : ENN5672A
52804TN (OT) No. 5672-1/4
Overview
The LA5618 is a multi-system power supply IC with a
built-in on/off control function. It is optimal for use as the
power supply IC in CD players, mini-component stereo
systems, and other microcontroller controlled audio
equipment.
Functions
Power supply IC with 7.5 V outputs (1.5 A) and an
on/off control function.
The LA5618 is pin compatible with the LA5617.
Package Dimensions
unit: mm
3049B-SIP12H
27.0
20.0
R1.7
8.4
12
1
11.8
0.5
2.0
4.0
0.4
2.0
7.0
2.5
1.0
13.2max
6.0
1.0min
SANYO: SIP12H
[LA5618]
LA5618
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
Multi-System Power Supply for Audio Equipment
Monolithic Linear IC
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.
Parameter
Symbol
Conditions
Ratings
Unit
Input voltage
V
CC
/V
EE
max
18
V
Allowable power dissipation
Pd max
With no heat sink
2.4
W
Operating temperature
Topr
20 to +85
C
Storage temperature
Tstg
55 to +150
C
Specifications
Maximum Ratings
at Ta = 25C
Parameter
Symbol
Conditions
Ratings
Unit
Input voltage
V
CC
/V
EE
9.5 to 16
V
Output current
I
OUT
1
0 to 1.5
A
I
OUT
2
1.5 to 0
A
Operating Conditions
at Ta = 25C
No. 5672-2/4
LA5618
Parameter
Symbol
Conditions
Ratings
Unit
min
typ
max
[+7.5 V Power Supply Block] I
OUT
1 = 500 mA, C
OUT
1 = 100 F
Output voltage
V
O
1
7.0
7.5
8.0
V
Dropout voltage
V
DROP
1-1
1.5
2.0
V
V
DROP
1-2 I
OUT
1 = 300 mA
1.0
1.5
V
Line regulation
V
OLN
1
9 V
V
CC
16 V
20
100
mV
Load regulation
V
OLD
1
5 mA
I
OUT
1
1 A
80
200
mV
Peak output current
I
OP
1
V
CC
/V
EE
= 12 V
1.5
1.8
A
Output short current
I
OSC
1
1.0
A
Output off voltage
V
O
1
OFF
V
EN
= 0.4 V
0.3
V
Ripple rejection
Rrej1
f = 120 Hz, 8.5 V
V
CC
16 V, CN1 = 1 F
65
dB
[7.5 V Power Supply Block] I
OUT
2 = 500 mA, C
OUT
2 = 100 F
Output voltage
V
O
2
8.0
7.5
7.0
V
Dropout voltage
V
DROP
2-1
1.5
2.0
V
V
DROP
2-2 I
OUT
2 = 300 mA
1.0
1.5
V
Line regulation
V
OLN
2
16 V
V
EE
9 V
200
300
mV
Load regulation
V
OLD
2
1 A
I
OUT
2
5 mA
80
200
mV
Peak output current
I
OP
2
V
CC
/V
EE
= 12 V
1.8
1.5
A
Output short current
I
OSC
2
1.0
A
Output off voltage
V
O
2
OFF
V
EN
= 0.4 V
0.3
V
Ripple rejection
Rrej2
f = 120 Hz, 16 V
V
EE
8.5 V, CN2 = 1 F
50
dB
[Common Circuit Block] C
OUT
1 = 100 F, C
OUT
2 = 100 F
Output off control voltage
V
ENL
V
O
1, V
O
2: Off
0.4
V
Current drain (positive voltage
I
QP
1
I
OUT
1 = 0, I
OUT
2 = 0
5.0
mA
power supply block)
I
QP
2
I
OUT
1 = 1.5 A, I
OUT
2 = 0
7.0
mA
Current drain (negative voltage
I
QM
1
I
OUT
1 = 0, I
OUT
2 = 0
5.0
mA
power supply block)
I
QM
2
I
OUT
1 = 0, I
OUT
2 = 1.5 A
12.0
mA
Operating Characteristics
at Ta = 25C, V
CC
/V
EE
= 9.5 V, in the specified test circuit.
2
2.4
0
4
6
6.25
8
10
10.4
12
14
20
0
20
40
60
80
100
Allowable power dissipation, Pd max
--
W
Pd max -- Ta
Ambient temperature, Ta --
C
With an arbitrarily large heat sink
100
100
1.5mm
3
13.0
5.4
3.25
1.25
50
50
1.5mm
3
Independent IC
2
V
O
1
1
NC
3
V
CC
4
CN1
5
EN
6
TP
7
GND
8
NC
9
CN2
10
V
EE
11
V
O
2
12
NC
LA5618
Top view
A06997
Note: The TP pin is used for IC testing. It must be left open during normal operation.
The NC pins must also be left open during normal operation.
Pin Assignment
No. 5672-3/4
LA5618
VREF
VREF
Error
amplifier
Error
amplifier
ON/OFF
ON/OFF
Startup circuit
VREF
Thermal protection
circuit
Current limiter
Current limiter
30 k
60 k
100 k
100
VCC
VMUTE VCC
140
A
3
2
4
7
9
11
10
5
VCC
VO1
CN1
GND
CN2
VO2
VEE
EN
6
1.8 V
TP
A06998
Note: The TP pin is used for IC testing.
It must be left open during normal operation.
Comparator
Equivalent Circuit Block Diagram
PS No. 5672-4/4
LA5618
Notes: 1. The V
O
1 and V
O
2 output capacitors must have values of at least 100 F and capacitors with low temperature coefficients must be used to prevent
oscillation at low temperatures.
2. External noise can be suppressed and ripple rejection improved by adding capacitors between CN1 and V
O
1 and between CN2 and V
O
2.
This catalog provides information as of May, 2004. Specifications and information herein are subject to
change without notice.
Specifications of any and all SANYO 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.
SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any 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.
In the event that any or all SANYO products (including technical data, services) described or contained
herein are controlled under any of applicable local export control laws and regulations, such products must
not be exported without obtaining 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 permission of SANYO Electric 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 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. SANYO believes information herein is accurate and reliable, but
no guarantees are made or implied regarding its use or any infringements of intellectual property rights
or other rights of third parties.
CN1
CN2
EN
GND
VO1
VO2
VCC
VEE
VO1 and VO2
blocks
Bias blocks
Audio circuit
block
7.5V
1
F
1
F
7.5V
On/off control
LA5618
A06999
4
2
3
10
11
9
5
7
Sample Application Circuit:
Mini-component stereo system power supply
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