Sanyo LB1673M Specifications

Ordering number:EN3473

Monolithic Digital IC

LB1673M

3-Phase Brushless, Sensorless Motor Driver

Applications

Rotational control of brushless motors for use in audio
applications such as headphone stereos, micro-cassette

recorders, mini-cassette recorders.

Function and Features

• Brushless, sonsorless motor drive (3-phase half-wave
drive).

• Bidirectional motor drive.

• On-chip speed control function (V servo type).

• On-chip reference votlage.

• On-chip one comparator (PNP input, NPN open
collector output).

Specifications

Absolute Maximum Ratings at Ta = 25˚C

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Allowable Operating Conditions at Ta = 25˚C

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xam 5V

CC

xam 01V

SUS

M

CC

Package Dimensions

unit:mm

3112-MFP24S

[LB1673M]

SANYO : MFP24S

1A

˚C
˚C

5.3ot0.1V

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)/5280TA No.3473-1/4

Electrical Characteristics at Ta = 25˚C

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egatlovecnereferfocirsiretcarahcdaoL Aµ06–ot0=ferI30.0–

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rorrenoitalerroclangisdeepS 5–5%

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egatlovlevel-hgihtupnicigoLV

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egaltovtesfforotarapmoCV

tnerructuptuorotarapmoCI

Vref/∆V

∆Vref

∆Vref

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Vref

∆Vsp

Vsp

∆Vsp

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Vsp

LB1673M

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)L(wolnipTRATS001Am

CC

)H(hgihnipTRATS8.401Aµ

CC

∆Vref

∆Iref

/∆Ta

/∆V

H
L

/∆Ta

IR

I

CSO

CSO

MOC

FFO

FFO

CC

CC

Θ VtrohS

CC

Ta=0 to +80˚C

CC

Ta=0 to +60˚C

V

1NI

V

2NI

C

S

V

CC

V5.3ot1=3.00.1

V5.3ot1=2.00.1

V,V3.0=

V1=055608Vm

2NI

V3.1ot1=41.071.052.0

V4.0siCSOnipsaderusaeM6.28.30.5Aµ

Fµ74.0=06sm

CC

MOChtiw020304Aµ

A2.0=90.052.0V

m

V=1TUO,V1=

CC

9.0V

01–01+Vm
001Aµ

tinU

V/%

Aµ/Vm

%/˚C

V/%

%/˚C

3.0V

Equivalent Circuit Block Diagram

No.3473-2/4

LB1673M

Sample Peripheral Circuit Pin Assignment

Make the capacitance of the oscillation blocking capacitor
(C1) in the output section as small as possible and the
capacitance of C2 as large as possible.
If the capacitance of the capacitor in the output section is
large and the capacitance of CS is small, the starting votlage

Unit (resistance : Ω, capacitance : F)

Pin Description

may rise at low temperatures. In 3V-use, reverse rotation of
a motor would not be well, consider the resistance of Rcom.

Top view

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91V

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No.3473-3/4

LB1673M

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.3473-4/4