Sanyo LB1687 Specifications

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.

Monolithic Digital IC

3-Phase Brushless Motor Driver

Ordering number:ENN3345

LB1687

SANYO Electric Co.,Ltd. Semiconductor Company

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

Applications

The LB1687 is a 3-phase brushless motor driver IC ideally
suited for use in VCR capstan motor, drum motor drive

applications.

Features and Functions

• 120° voltage linear type.

• Soft switching type eliminating noises caused by current
switching and making the values of external capacitors
smaller (comparable to those of chip capacitors).

• On-chip FG amplifier.

• On-chip thermal shutdown circuit.

• The FG signal can be used to detect the rotational speed
of a motor so that the hall amplifier gain is changed in
two steps, thus reducing torque ripple and noise.

• Motor drivable at voltage down to motor supply voltage
5V.

Specifications

Absolute Maximum Ratings at Ta = 25˚C

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egatlovylppusmumixaM

egatlovylppustuptuOV

tnerructuptuOI

noitapissidrewopelbawollAxamdP 1.2W

erutarepmetgnitarepOrpoT 57+ot02–

erutarepmetegarotSgtsT 521+ot55–

V
V

1xam 02V

CC

2xam 0.7V

CC

W.V.TUO

TUO

Package Dimensions

unit:mm

3061-DIP30S

[LB1687]

27.2

0.48 0.95

1.15

30

1

1.78

16

8.6

10.16

15

4.25

4.95max

3.2

0.51min

SANYO : DIP30S

0.25

22V

5.1A

˚C
˚C

Allowable Operating Ranges at Ta = 25˚C

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VCC1 81ot5V
VCC2 5.6ot3.4V

22801TN (KT)/3260TA, TS No.3345–1/4

LB1687

Electrical Characteristics at Ta = 25˚C, VCC1=12V, VCC2=5V

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1tnerrucylppuSI
2tnerrucylppuSI

]tuptuO[

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egatlovSRTtuptuOV

egatlovtnecseiuqtuptuOV

]tuptuo-tupnillaH[

egatlovtesffotupnireifilpmallaHV

tnerrucsaibtupnireifilpmallaHI

egatlovtupniedom-nommocreifilpmallaH

egnar

niagegatlovtuptuo-tupnillaH

]tuptuo-lortnoC[

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ecnereffidHCtuptuo-lortnoC

]reifilpmaGF[

egatlovtesffotupnireifilpmaGFtesffoGFV 8–8+Vm

niagegatlovpool-nepOG

egatlovnoitarutastuptuoecruoSV

egatlovnoitarutastuptuokniSV

oitarnoitcejerlangisedom-nommoCRHC).etoneeS(08Bd

egnaregatlovtupniedom-nommocreifilpmaGFV

nigramesahP ).etoneeS(02.ged

]noitcetedrotoM[

htdiwsiseretsyhreifilpmanoitcetedrotoM 530556Vm

egatlovdlohserhtnipRC .HGIHotWOLmorfsegnahcRCV53.25.256.2V

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Note : Values shown are design targets only. No measurements have been taken.

1VCR,0=L=∞ 7103Am

CC

2VC0=5.65.9Am

CC

V

1I

)tas(O

V

QO

H
H

VHhc3.17.3V

G

OHV

G

OHV

OCV

∆G

GFV

DS

∆T

DS

TUO

2I

)tas(O

TUO

I

)sus(O

TUO

VC0=8.51.64.6V

tesffo5–5+Vm

saib 15Aµ

1 65Bd
2 34Bd

OCV

zHk1=f06Bd

IOAm2=7.3V

UOGF

I

DOGF

HCGF

Am2–= 3.1V

O

).etoneeS(051081012
).etoneeS(51

sgnitaR

nimpytxam

ecruos+knis,A5.0=6.12.2V
ecruos+knis,A0.1=0.20.3V

).etoneeS(Am02=02V

831444Bd
2–2+Bd

05.3V

tinU

˚C
˚C

No.3345–2/4