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Ordering number :ENN6214A

Monolithic Digital IC

LB1971V

Three-Phase Full-Wave Sensorless CD

and MD Players Spindle Motor Driver

Overview

The LB1971V is a bipolar sensorless motor driver that

provides a reverse torque braking function and is

appropriate for use as the spindle motor driver in CD and

MD players. Since the LB1971V can drive motors without

the use of Hall elements, this device can contribute to

miniaturization, thinner form factors, and lower power

dissipation in end products.

Package Dimensions

unit: mm

3175A-SSOP24

[LB1971V]

24

13

1.0

5.6

0.1

0.43

1.6max

0.15

Functions and Features

鈥?/div>

Three-phase bipolar sensorless drive

Soft switching drive technique

Reverse torque braking

Standby mode power saving function

FG outputs

Can be operated from a 3-V supply.

Thermal protection circuit

1

8.0

12

0.22

0.65

SANYO: SSOP24

Specifications

Absolute Maximum Ratings

at Ta = 25擄C

Parameter

Maximum supply voltage 1

Maximum supply voltage 2

Maximum output circuit supply voltage

Maximum output current

Allowable power dissipation

Operating temperature

Storage temperature

Symbol

V

CC

1max

V

CC

2max

V

S max

I

O max

Pdmax

Topr

Tstg

Conditions

Ratings

7.0

700

0.4

鈥?0 to +75

鈥?5 to +150

Unit

V

mA

W

擄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鈥檚

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

91099RM (OT) No. 6214-1/9

0.5

7.6

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LB1971V Datasheet

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