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PDF LA5645T Data sheet ( Hoja de datos )
| Número de pieza | LA5645T | |
| Descripción | Monolithic Linear IC | |
| Fabricantes | Sanyo Semicon Device | |
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Ordering number : ENN6520
Monolithic Linear IC
LA5645T
Constant-Voltage/Constant-Current Control IC
Overview
The LA5645T is a constant-voltage/constant-current
control IC that incorporates low-voltage operational
amplifiers and a high-precision reference voltage circuit
(VREF = 1.5 V ±1.0%). This device is optimal for use as a
secondary side controller in battery chargers, switching
regulators, and similar products.
Features
• Operating supply voltage: 2.5 to 14 V
• High-precision reference voltage: 1.5 V ±1.0%
• PC pin current: 60 mA (max)
• Current drain: 3 mA (max)
• Input offset voltage: 2 mV (max)
Package Dimensions
unit: mm
3245-MSOP8
[LA5645T]
3.0
85
1
0.65
(0.5)
4
0.25
0.25
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Supply voltage
Differential input voltage
Allowable power dissipation
PC pin current
Operating temperature
Storage temperature
Symbol
VCC max
VID max
Pd max
IPC max
Topr
Tstg
Conditions
Independent IC
Mounted on the specified printed circuit board*
Note: * Specified printed circuit board: 20 × 10 × 0.8 mm3, paper phenolic board.
Operating Conditions at Ta = 25°C
Parameter
Recommended supply voltage
Symbol
Vopr
Conditions
SANYO: MSOP8
Ratings
14.5
14.5
200
370
60
–40 to +85
–50 to +150
Unit
V
V
mW
mW
mA
°C
°C
Ratings
2.5 to 14
Unit
V
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
83000RM (OT) No. 6520-1/5
1 page  
Sample Application Circuit
VI
CONTROL IC
PC
LA5645T
R1 R3
8
2
A
3
R2
RSC
R4
4
PC (PHOTO COUPLER)
1
5
B
6
VREF = 1.5 V ± 1% 7
LA5645T
R5
Battery
R6
ILA00195
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 August, 2000. Specifications and information herein are subject to
change without notice.
PS No. 6520-5/5
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