FAN8705 데이터 시트보기 (PDF) - Fairchild Semiconductor

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FAN8705

5 Channel DSC Motor Driver

Fairchild Semiconductor 

1.1 Stepping-Motor Drive

1.1.1 Three Input 2-2 Phase Excitation

SEL IN1/IN3 IN2

L

X

H

L

H

H

H

H

H

H

L

note

1. X : Don’t care.

2. Z : High impedence.

IN4

OUT1 OUT2 OUT3 OUT4

X

Z

Z

Z

Z

L

H

L

H

L

L

L

H

H

L

H

L

H

L

H

H

H

L

L

H

Function

Stand-by(Stop)

S1

S2

S3

S4

IN1 & IN3

IN2

Don’t care

IN4

CH1

Current

CH2

Current

S1 S2 S3 S4

High Impedence

IN1

IN2

DSP

IN3

or

Micom

IN4

VDD

SEL

VM1

Constant

Voltage

H-bridge

CH1

Constant

Voltage

H-bridge

CH2

OUT1

STEP

M

OUT2

OUT3

OUT4

13

www.fairchildsemi.com

FAN8705 Rev. 1.0.1

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