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Ordering number : EN*6183

LB11847

Monolithic Digital IC

LB11847

PWM Current Control Type Stepping Motor Driver

Preliminary

Overview

The LB11847 is a driver IC for stepping motors

with PWM current control bipolar drive (fixed OFF

time). A special feature of this IC is that V

REF

8.4

Package Dimensions

unit: mm

3147B-DIP28H

[LB11847]

28

15

15 steps, allowing drive of motors ranging from 1-

2 phase exciter types to 4W 1-2 phase exciter

types. The current decay pattern can also be

selected (SLOW DECAY, FAST DECAY, MIX

DECAY) to increase the decay of regenerative

current at chopping OFF, thereby improving

response characteristics. This is especially useful

for carriage and paper feed stepping motors in

printers and similar applications where high-

precision control and low vibrations are required.

R1.7

12.7

11.2

voltage is constant while the current can be set in

1

20.0

27.0

14

1.93

1.78

0.6

1.0

4.0

SANYO : DIP28H

Features

鈥?/div>

PWM current control (fixed OFF time)

Load current digital selector (1-2, W1-2, 2W1-2, 4W1-2 phase exciter drive possible)

Selectable current decay pattern (SLOW DECAY, FAST DECAY, MIX DECAY)

Simultaneous ON prevention function (feedthrough current prevention)

Noise canceler

Built-in thermal shutdown circuit

Built-in logic low-voltage OFF circuit

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

61199RM(KI) No. 6183-1/16

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LB11847 Datasheet

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