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Ordering number:EN1371C
Monolithic Digital IC
LB1645N
Bidirectional Motor Driver
Overview
The LB1645N is a bidirectional motor driver IC. Since it
has a 2-input logic circuit and performs the function of
bidirectional driving and braking, it is capable of direct
driving 6V, 9V, 12V motors. The output voltage can be
varied by using an external Zener diode.
Features
• 2-input logic can be used to exercise control of bidirectional driving and braking.
• On-chip elements to absorb dash curret of motor.
• Input connectable direct to MOS LSI.
• Output voltage variable by use of external Zener diode.
Specifications
Absolute Maximum Ratings at Ta = 25˚C
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erutarepmetgnitarepO
erutarepmetegarotS
Allowable Operating Conditions at Ta = 25˚C
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egatlovylppuS
V
xam 81V
CC
V
NI
I
TUO
xamdP 2.2W
rpoT 57+ot52–
gtsT 521+ot55–
VCC1 81ot7V
VCC2 81ot5V
Package Dimensions
unit:mm
3046B-SIP10F
[LB1645N]
SANYO : SIP10F
Vot3.0–
CC
6.1±A
V
˚C
˚C
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 Bussiness Headquaters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
83198HA (KT)/N3093TS/8297KI/N224MW/D143KI/6073KI, TS No.1371-1/4
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LB1645N
Electrical Characteristics at Ta = 25˚C, VCC=12V, See Test Circuit.
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)rewol(egatlovnoitarutaS
T ruth T able
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0101 evird)drawrof(esreveR
1100 gnikarB
Test Circuit
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RL=∞ 1.13.15.1V
ht
RL=∞ 0151Aµ
NI
RL06= Ω V,
O
LO
CC
1tasVVCCI,V21=
'1tasVVCCI,V21=
2tasVVCCI,V21=
'2tasVVCCI,V21=
V4.7=6.62.74.7V
Z
DNG6,5sniP , RL=∞ 10.00.1Am
R,DNG6,5sniP
=∞ 3601Am
L
Am003=9.12.2V
TUO
Am005=9.13.2V
TUO
Am003=52.05.0V
TUO
Am005=4.056.0V
TUO
Input level
1 : 2.0V or more
0 : 0.7V or less
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Sample Application Circuit : 6V motor
No.1371-2/4
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Equivalent Circuit Block Diagram
LB1645N
No.1371-3/4
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LB1645N
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 and all SANYO products described or contained herein fall under strategic
products (including services) controlled under the Foreign Exchange and Foreign Trade Control Law of
Japan, such products must not be exported without obtaining export license from the Ministry of
International Trade and Industry 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, 1998. Specifications and information herein are subject to
change without notice.
PS No.1371-4/4
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