SANYO LB1981V Datasheet

Ordering number : ENN5917

LB1981V

Monolithic Digital IC

LB1981V

Three-Phase Brushless Motor Driver

Overview

The LB1981V is a three-phase brushless motor driver
especially suited for use mainly with drum motors of
portable VCRs.

Features

• Three-phase full-wave drive brushless sensorless motor
drive

• Soft switching drive

• Power-saving speed control function due to motor
voltage

• Use with 3V power supply possible

• Output residual voltage can be set in 4 ways

• Forward/reverse switching possible

• Built-in standby function (FG and PG amplifier only
remain operative)

• Built-in braking circuit

• Built-in thermal shutdown circuit

• Built-in FG and PG amplifiers

• Built-in saturation prevention amplifier and midpoint
control circuit

Package Dimensions

unit: mm

3191-SSOP30

[LB1981V]

30

115

9.95

0.22

0.65

16

0.1

0.43

1.0

5.6

1.6max

7.6

0.5

0.15

SANYO : SSOP30

Specifications

Absolute Maximum Ratings at Ta = 25°C

Parameter Symbol Conditions Ratings Unit

Power supply voltage VCC1 max 7 V

VCC2 max 12 V

VS max VCC2V
Applied output voltage VO max VS+2 V
Applied input voltage VIN1 max Control circuits –0.3 to VCC1+0.3 V

VIN2 max U, V, W, COM VS+2 V
Output current IO max 1.0 A
Allowable power dissipation Pd max 0.5 W
Operating temperature Topr –20 to +75 °C
Storage temperature Tstg –55 to +150 °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 Company

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

81299RM(KI)

No. 5917-1/9

LB1981V

Allowable Operating Ranges at Ta = 25˚C

Parameter Symbol Conditions Ratings Unit

Power supply voltage VCC1 2.7 to 6.0 V

VCC2 2.7 to 10.0 V

V

S

Electrical Characteristics at Ta = 25°C, VCC1 = 3V, VCC2 = 4.75V, VS = 3V

Parameter Symbol Conditions

Power supply current ICC1IO = 76 mA 5 7.5 mA

ICC2IO = 76 mA 1.2 2.5 mA

Output idle current ICC10Q V

ICC20Q V

I

QV

S30

= 0V 1.0 1.5 mA

STBY

= 0V 10 µA

STBY

= 0V 60 120 µA

STBY

Output saturation voltage, upper side 1 VOU1IO = 0.1A 0.2 0.5 V
Output saturation voltage, lower side 1 VOD1IO = 0.1A 0.2 0.5 V
Output saturation voltage, upper side 2 VOU2IO = 0.4A 0.4 0.8 V
Output saturation voltage, lower side 2 VOD2IO = 0.4A 0.4 0.8 V
COM pin common mode input voltage V

IC

range
Standby pin High level voltage V
Standby pin Low level voltage V
Standby pin input current I
Standby pin leakage current I
FRC pin High level voltage V
FRC pin Low level voltage V
FRC pin input current I
FRC pin leakage current I
Slope pin source current ratio R
Slope pin sink current ratio R
CSLP1 source - sink current ratio R
CSLP2 sink - source current ratio R
Startup frequency Freq C

STBYH

STBYL
STBYHVSTBY
STBYLVSTBY

FRCH
FRCL
FRCI

FRCL

SOURCEICSLP

SINKICSLP
CSLP
CSLP

V

FRC

V

FRC

1I

CSLP

2I

CSLP

OSC

= 3V 50 µA
= 0V –10 µA

= 3V 50 µA
= 0V –10 µA

1 source/I
1 sink/I
1 source/I
2 source/I

2 source –12 +12 %

CSLP

2 sink –12 +12 %

CSLP

1 sink –35 +15 %

CSLP

2 sink –35 +15 %

CSLP

= 0.1 µF, OSC frequency *1 11.5 Hz
Phase delay width Dwidth *1 30 deg
Thermal shutdown operating T

TSD

*1 150 180 210 ˚C
temperature
Thermal shutdown hysteresis ∆T
SELCSLP pin High level voltage V
SELCSLP pin Low level voltage V
SELCSLP input current I
SELCSLP pin leakage current I

SEL

SEL

SEL

SEL

*1 15 °C

TSD

H2V

L –0.2 +0.7 V

HV

SELCSLP

LV

SELCSLP

= 3V 50 µA

= 0V –10 µA
[FG amplifier]
Input offset voltage V
Input bias current I
Common mode input voltage range V
Open loop gain G
Input ON voltage V
Input OFF voltage V
Schmitt amplifier hysteresis width V

BIN
ICOM

SHIS

*1 ±1 ±5mV

IO

–

*1 1 2 V
f = 1 kHz *1 55 dB

VFG

OLIO

OHIO

= 10 µA 0.4 V
= 10 µA

*1 20 mV
Output duty Duty f = 720 Hz, VIN = 20 mVp-p 30 70 %
Reference voltage V

REF

[PG amplifier]
Input offset voltage V
Input bias voltage I
Common mode input voltage range V
Open loop gain G
Output ON voltage V
Output OFF voltage V
Schmitt amplifier hysteresis width V

BIN
ICOM

SHIS

*1 ±1 ±5mV

IO

–

*1 250 nA

*1 1 2 V

f = 1 kHz *1 55 dB

VPG

IO = 10 µA 0.4 V

OL
OHIO

= 10 µA

*1 50 mV

Note: Items shown to be “*1” are not measured.

min typ max

0.3

2V

–0.2 +0.7 V

2V

–0.2 +0.7 V

VCC1–0.5

1.15 1.30 1.45 V

VCC1–0.5

0 to VCC2V

Ratings

VCC2–0.9

CC

CC

CC

250 nA

Unit

1V

1V

No. 5917-2/9

V

V

V

V

Pin Assignment

LB1981V

U

OUT

V

OUT

STBY

SELCSLP

FRC

V

VCC2

VCC1

CSLP1

CSLP2

PG

OUT

PGC

1

2

3

4

5

6

S

7

8

9

10

11

12

LB1981V

30

29

28

27

26

25

24

23

22

21

20

19

RF

W

OUT

COM

V

IN

U

IN

W

IN

GND

BFGO

FC2

FILTER

FC1

OSC

0.6

0.5

0.4

0.3

0.2

PG

V

REF

FG

Pdmax

13

IN

14

15

IN

18

17

16

FG

OUT

FGIN2

FGIN1

Top view

A10857

-

Ta

0.1

Allowable power dissipation, Pd max – W

0

–20

020406080100

Ambient temperature, Ta – ˚C

No. 5917-3/9