Sanyo LB1657M Specifications
Ordering number:EN3664A
Monolithic Digital IC
LB1657M
2-Phase Stepping Motor Driver
Overview
The LB1657M is a dual bridge driver IC suited for use in
2-phase bipolar stepping motor driver for FDD (3 to 5.25
inches) head actuator.
The maximum driver current×voltage is 0.33A×12V/
bridge.
Features
• Power save function.
• ø1, ø2 direction inputs are used to make driver output
selection.
• Low saturation voltage.
• Low current drain.
• Direct controllable from MPU due to low input current.
• Input level : TTL, LSTTL, 5V CMOS compatible.
• On-chip thermal shutdown (TSD) circuit.
Specifications
Absolute Maximum Ratings at Ta = 25˚C
retemaraPlobmySsnoitidnoCsgnitaRtinU
egatlovylppusnoitcescigoLV
egatlovylppusgnikeeSV
egatlovtupnIV
tnerrucgnikeeskaePI
tnerrucgnikeessuounitnoCI
noitapissidrewopelbawollAxamdP 9.0W
erutarepmetgnitarepOrpoT 07ot02–
erutarepmetegarotSgtsT 521+ot55–
CC
S
NI
kaept≤ sm5 005Am
O
SO
Package Dimensions
unit:mm
3097-MFP16FS
[LB1657M]
SANYO : DMFP16FS
7V
51V
Vot0
CC
033Am
˚C
˚C
V
Allowable Operating Conditions at Ta = 25˚C
retemaraPlobmySsnoitidnoC
egatlovylppusnoitcescigoLV
egatlovylppusgnikeeSV
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.
CC
S
nimpytxam
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquaters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
82098HA (KT)/5231TS (KOTO)/5310TA (KOTO) No.3664-1/4
sgnitaR
5.40.55.5V
2.010.218.31V
tinU
LB1657M
Electrical Characteristics at Ta = 25˚C, VCC=5V, VS2=5V, VS1=12V
retemaraPlobmySsnoitidnoC
egatlovlevel-woltupnIV
egatlovlevel-hgihtupnIV
tnerruclevel-woltupnII
tnerruclevel-hgihtupnII
niardtnerruCI
egatlovrotsisnarttuptuOV
V
1S
emityaleD
egatlovnoitarutasV
egatlovpmalCV
erutarepmetgnitarepoDSTDST 051
siseretsyhDST ∆T 52
Note : 1. Measure sum of currents at pins 4 and 13.
2. Measure sum of saturation voltages at upper and lower level.
LI
HI
VIV8.0=01–01+Aµ
LI
VIV2=601Aµ
HI
VIV5=55.00.1Am
LC
I
LS
I
HC
I
HS
I
REC
C
tas
I
F
F
I
t
t
F
HLP
LHP
V,V8.0=BTS
CC
V,V8.0=BTS
1etoN,1Am
S
V,V0.2=BTS
CC
V,V0.2=BTS
1etoN,501Am
S
Am01=81V
I,V8.0=BS
O
reppu,Am033=3V
rewol,Am033=5.1V
2etoN,Am033=5.10.2V
sgnitaR
nimpytxam
0.2V
5233Am
5233Am
4sµ
2sµ
tinU
8.0V
˚C
˚C
Equivalent Circuit Block Diagram
The ø1, ø2 direction inputs are used to make driver output selection and the power
save input is used to select the driver source output from between 0V supply and
12V supply.
No.3664-2/4
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