bd6757kn ROHM Co. Ltd., bd6757kn Datasheet - Page 11

• Manufacturer Part Number: bd6757kn
• Description: 7ch System Lens Drivers For Digital Still Cameras / Single-lens Reflex Cameras
• Manufacturer: ROHM Co. Ltd.

© 2009 ROHM Co., Ltd. All rights reserved.
BD6757KN, BD6889GU
www.rohm.com
In the case of drive the Stepping Motor using ch1 and ch2 IN/IN input mode of the BD6757KN and BD6889GU
2 Phases
1-2 Phases
L: Low, H: High, X: Don't care, Z: High impedance
At CW, current flows from OUTA to OUTB. At CCW, current flows from OUTB to OUTA.
L: Low, H: High, X: Don't care, Z: High impedance
At CW, current flows from OUTA to OUTB. At CCW, current flows from OUTB to OUTA.
IN1A
IN1A
Fig.14 2 Phases Timing Sequence with IN/IN Input
H
H
H
H
H
L
L
L
L
L
L
L
L
L
Reverse
Fig.16 Torque Vector of 2 Phases Mode
OUT1A
OUT1B
OUT2A
OUT2B
OUT1B
IN1A
IN1B
IN2A
IN2B
CCW
IN1B
IN1B
H
H
H
H
H
L
L
L
L
L
L
L
L
L
INPUT
INPUT
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
1
IN2A
IN2A
3
5
H
H
H
H
H
L
L
L
L
L
L
L
L
L
3
OUT2A
OUT2B
CCW
5
CW
IN2B
IN2B
7
H
H
H
H
H
L
L
L
L
L
L
L
L
L
1
7
1
OUT1A
OUT1A
3
H
H
H
H
H
Z
Z
Z
Z
L
L
L
L
L
OUT1A
CW
5
11/15
7
OUT1B
OUT1B
Forward
Z
H
H
Z
Z
H
H
H
Z
L
L
L
L
L
OUTPUT
OUTPUT
Reverse
OUT1B
OUT1A
OUT1B
OUT2A
OUT2B
OUT2A
OUT2A
CCW
Fig.15 1-2 Phases Timing Sequence with IN/IN Input
IN1A
IN1B
IN2A
IN2B
Z
H
H
Z
H
H
H
Fig.17 Torque Vector of 1-2 Phases Mode
L
L
Z
L
L
L
Z
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
OUT2B
OUT2B
1
3
5
H
H
H
H
H
Z
L
L
Z
L
L
L
Z
Z
4
2
OUT2A
OUT2B
CCW
CW
2
6
3
Stand by
1. CW / CW
3. CCW / CW
5. CCW / CCW
7. CW / CCW
Stand by
1. CW / CW
2. Z / CW
3. CCW / CW
4. CCW / Z
5. CCW / CCW
6. Z / CCW
7. CW / CCW
8. CW / Z
Output mode
Output mode
4
ch1 / ch2
ch1 / ch2
8
1
7
5
：High impedance
6
Technical Note
2009.06 - Rev.A
OUT1A
CW
7
8
Forward