Page 1
Ordering number:EN3381
Monolithic Digital IC
LB1684
3-Phase DD Motor Driver
Overview
The LB1684 is a 3-phase DD motor driver IC ideally
suited for use in low-supply VCR capstan motor drive,
drum motor drive, and floppy disk motor drive applica-
tions.
Features
• Designed for 5V-supply control system.
• Voltage-control system/current-control system available.
• Speed control available.
• Bidirectional control available.
• 20V/1.5A rating.
Specifications
Absolute Maximum Ratings at Ta = 25˚C
retemaraPlobmySsnoitidnoCsgnitaRtinU
egatlovylppusmumixaM
tnerructuptuOI
noitapissidrewopelbawollAxamdP 2.2W
erutarepmetgnitarepOrpoT 57+ot02–
erutarepmetegarotSgtsT 521+ot55–
Allowable Operating Conditions at Ta = 25˚C
retemaraPlobmySsnoitidnoCsgnitaRtinU
egatlovylppuS
VCC1 22V
VCC2 7V
O
VCC1 0.2ot0.7V
VCC2 3.6ot3.4V
Package Dimensions
unit:mm
3037A-DIP20H
[LB1684]
SANYO : DIP20H
5.1A
˚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)/3290TA, TS No.3381-1/4
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LB1684
Electrical Characteristics at Ta = 25˚C, VCC1=12V, VCC2=5.0V
tnerrucylppuS
ytivitisnestupnItupnillaH02Vm
Pin Assignment
retemaraPlobmySsnoitidnoC
I
)ffo(VCI,V0=
CC
I
)ird(VCI,V4=
egatlovnoitarutastuptuO
egnaregatlovtupniedom-nommoC
egnaregatlovtupninoitatordrawrofrotoM 0.2V
egnaregatlovtupninoitatoresreverrotoM 03.0V
noitairavtnerrucesahpretnI
)FFO(egatlovlortnocdeepSV
)NO(egatlovlortnocdeepS
niagegatlovpooL-desolCR
CC
V
1)tas(I
O
V
2)tas(I
O
1RfR,0=
C
VC2RfR,0=
VC3Rf1= Ω R,
TUO
TUO
1= Ω R,
f
T op view
I+1CC23181Am
CC
20204Am
CC
egatsrevirD52–052+%
egatstuptuO52–052+%
S
S
S
S
ecruos+knisA85.0=4.11.2V
ecruos+knisA1=0.25.3V
nipCF,0= → Aµ5tnerrucDNG1.2V
nipCF,0= → Am5.0tnerrucDNG83.285.2V
001= Ω V,
001= Ω I,
L
Vm001=7.2V
fR
Am001=44.0V/A
nimpytxam
sgnitaR
3.1
VCC2
CC
tinU
V
3.1–
2V
kaep
Equivalent Circuit Block Diagram
No.3381-2/4
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T ruth T able
LB1684
Pin Description
emanniP.oNniP noitpircseD
UNIU,1NI2
VNIV,1NI2
WNIW,1NI2
U
TUO
V
TUO
W
TUO
VCC14 tuptuogniylpparofnipylppusrewoP
VCC291
R
f
C
D
POTS9
F
UC
F
VC
F
WC
V
C
DNG8
R/F21
41,31
61,51
81,71
3
2
1
02 .egatlovsadetcetedsitnerructuptuo,nipDNGdnanipsihtssorcafRgnoitcennocyB.niptcetedtnerructuptuO
01
5
6
7
11
.ffo
RroFf1= Ω Rgniyravybdetsujdaebnachcihw,pytV/A44.0=mgsahpool-desolc4861BL,
V:cigolfohgiH.niptupnitnemelellaHesahpU
V>1NI2
NI
V:cigolfohgiH.niptupnitnemelellaHeshapV
V>1NI2
NI
V:cigolfohgiH.niptupnitnemelellaHeshapW
V>1NI2
niptuptuoesahpU
niptuptuoesahpV
niptuptuoesahpW
.egatlovsihtfo2/1yletamixorppatasi
CssorcarotsiseragnitcennocyB
D
.nipnoitcetorptnerrucrevO
CnotahtnahtrewolgniebegatloV
D
RrofV5.1ottessinipPOTSfi,elpmaxe
.niplortnocesahp/deepS
.tuptuonahtrehtorofDNG
.niplortnocesrever/drawroF
.noitator
Vfo2/1yletamixorppatastratslortnoC
NI
egatlovlortnocfotnioplortnocehT.noitcestuptuonahtrehtonoitceshcaeotegatlovgniylpparofnipylppusrewoP
.cte,esion,elppirmorfeerfebotdezilibatsebtsumegatlovsihT
Rhtiwdetceted)egatlov(tnerrucgnihctefrofniP
.
f
Rdnanip
f
1= Ω tucebottuptuognisuac,tuptuotaswolferomroA5.1yletamixorppa,
f
.nipnoitasnepmoccitsiretcarahcycneuqreF
CC
RtasirotsisnarttnerructolaitnetopmuminiM
.nip
f
.detsujda-enifebnacegaltovtratslortnocdeeps,nip
roF.ffotucebottuptuognisuac,wolftnerrucrevootlacitnediebotnekatsinip
.deppotssi)retrevnocV-F,rotomgnidulcni(metsysdellortnoc-tnerucninoitallicsopool-desolC
.
f
.tnerructuptuoslortnoctahtepytdellortnoc-tnerrucfosilortnoC.2
esrever/drawrofmrofrepotdegnahcsieulavhturt,)V3.0nahtssel(wol/)V0.2nahterom(hgihotnipsihtgnittesyB
No.3381-3/4
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LB1684
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.3381-4/4
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