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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