Sanyo LA5618 Multi-system power supply for audio equipment Datasheet

Ordering number : ENN5672A
Monolithic Linear IC
LA5618
Multi-System Power Supply for Audio Equipment
Overview
Package Dimensions
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.
unit: mm
3049B-SIP12H
[LA5618]
27.0
Functions
4.0
2.5
12
2.0
0.5
13.2max
6.0
R1.7
11.8
1
1.0min
7.0
• 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.
8.4
20.0
0.4
1.0
2.0
SANYO: SIP12H
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Input voltage
Symbol
Conditions
Ratings
VCC/VEE max
Allowable power dissipation
Pd max
With no heat sink
Unit
±18
V
2.4
W
Operating temperature
Topr
–20 to +85
°C
Storage temperature
Tstg
–55 to +150
°C
Ratings
Unit
±9.5 to ±16
V
Operating Conditions at Ta = 25°C
Parameter
Input voltage
Symbol
VCC/VEE
Output current
Conditions
IOUT1
0 to 1.5
A
IOUT2
–1.5 to 0
A
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
52804TN (OT) No. 5672-1/4
LA5618
Operating Characteristics at Ta = 25°C, VCC/VEE = ±9.5 V, in the specified test circuit.
Parameter
Symbol
Ratings
Conditions
min
typ
Unit
max
[+7.5 V Power Supply Block] IOUT1 = 500 mA, COUT1 = 100 µF
Output voltage
VO1
Dropout voltage
7.5
8.0
V
VDROP1-1
7.0
1.5
2.0
V
VDROP1-2 IOUT1 = 300 mA
1.0
1.5
V
20
100
mV
80
200
mV
Line regulation
∆VOLN1
Load regulation
∆VOLD1
Peak output current
IOP1
Output short current
IOSC1
Output off voltage
5 mA ≤ IOUT1 ≤ 1 A
VCC/VEE = ±12 V
1.5
1.8
A
1.0
VO1OFF
Ripple rejection
9 V ≤ VCC ≤ 16 V
VEN = 0.4 V
f = 120 Hz, 8.5 V ≤ VCC ≤ 16 V, CN1 = 1 µF
Rrej1
A
0.3
65
V
dB
[–7.5 V Power Supply Block] IOUT2 = 500 mA, COUT2 = 100 µF
Output voltage
VO2
Dropout voltage
–7.5
–7.0
V
VDROP2-1
–8.0
1.5
2.0
V
VDROP2-2 IOUT2 = –300 mA
1.0
1.5
V
200
300
mV
80
200
mV
–1.8
–1.5
A
Line regulation
∆VOLN2
Load regulation
∆VOLD2
Peak output current
IOP2
Output short current
IOSC2
Output off voltage
–1 A ≤ IOUT2 ≤ –5 mA
VCC/VEE = ±12 V
VO2 OFF
Ripple rejection
–16 V ≤ VEE ≤ –9 V
VEN = 0.4 V
–1.0
A
50
dB
–0.3
V
f = 120 Hz, 16 V ≤ VEE ≤ –8.5 V, CN2 = 1 µF
Rrej2
[Common Circuit Block] COUT1 = 100 µF, COUT2 = 100 µF
Output off control voltage
VENL
VO1, VO2: Off
Current drain (positive voltage
power supply block)
IQP1
IOUT1 = 0, IOUT2 = 0
0.4
IQP2
IOUT1 = 1.5 A, IOUT2 = 0
Current drain (negative voltage
power supply block)
IQM1
IOUT1 = 0, IOUT2 = 0
IQM2
IOUT1 = 0, IOUT2 = –1.5 A
5.0
V
mA
7.0
mA
–5.0
mA
–12.0
mA
Pd max — Ta
Allowable power dissipation, Pd max — W
14
13.0
12
10.4
10
With an arbitrarily large heat sink
100 × 100 × 1.5mm3
8
6.25
6
50 × 50 × 1.5mm3
5.4
4
2.4
2
3.25
Independent IC
1.25
0
–20
0
20
40
60
80
100
Ambient temperature, Ta — °C
Pin Assignment
1
2
3
4
5
6
7
8
9
10
11
12
NC
VO1
VCC
CN1
EN
TP
GND
NC
CN2
VEE
VO2
NC
LA5618
Top view
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.
A06997
No. 5672-2/4
LA5618
Equivalent Circuit Block Diagram
VCC
VO1
CN1
GND
3
2
Error
amplifier
VREF
4
7
Startup circuit
VREF
ON/OFF
Thermal protection
circuit
Current limiter
VMUTE VCC
Current limiter
140 µA
VCC
ON/OFF
100 kΩ
VO2
VEE
11
10
Comparator
60 kΩ
9
Error
amplifier
VREF
100 Ω
CN2
1.8 V
30 kΩ
5 EN
6 TP
Note: The TP pin is used for IC testing.
It must be left open during normal operation.
A06998
No. 5672-3/4
LA5618
Sample Application Circuit: Mini-component stereo system power supply
LA5618
CN1
1 µF
4
VCC
3
VO1
VO1 and VO2
blocks
VO2
VEE
7.5V
2
Audio circuit
block
11
–7.5V
9
10
CN2
Bias blocks
1 µF
5
EN
On/off control
7
GND
A06999
Notes: 1. The VO1 and VO2 output capacitors must have values of at least 100 µF 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 VO1 and between CN2 and VO2.
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.
This catalog provides information as of May, 2004. Specifications and information herein are subject to
change without notice.
PS No. 5672-4/4
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