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LB1945D Fiches technique(PDF) 6 Page - ON Semiconductor

No de pièce LB1945D
Description  Stepping Motor Driver
Download  9 Pages
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Fabricant  ONSEMI [ON Semiconductor]
Site Internet  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

LB1945D Fiches technique(HTML) 6 Page - ON Semiconductor

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LB1945D
No.7633-6/9
Truth Table
ENABLE
PHASE
OUTA
OUTA
Low
High
High
Low
Low
Low
Low
High
High
-
OFF
OFF
I1
I2
Output current
Low
Low
Vref/(10
× RE) = IOUT
High
Low
Vref/(15
× RE) = IOUT × 2/3
Low
High
Vref/(30
× RE) = IOUT × 1/3
High
High
0
Note: The output is turned off when ENABLE is high or in the I1 = I2 = high state.
Clockwise/counterclockwise Operating Sequence
2-phase excitation drive
Clockwise rotation
IA1 = IA2 = IB1 = IB2 = 0
No.
PHASE1
OUTA
OUTA
PHASE2
OUTB
OUTB
0
0
0
1
0
0
1
1
1
1
0
0
0
1
2
1
1
0
1
1
0
3
0
0
1
1
1
0
Counterclockwise rotation
IA1 = IA2 = IB1 = IB2 = 0
No.
PHASE1
OUTA
OUTA
PHASE2
OUTB
OUTB
0
0
0
1
1
1
0
1
1
1
0
1
1
0
2
1
1
0
0
0
1
3
0
0
1
0
0
1
Control Sequence
2-phase excitation
Table 1
ENABLE1 = ENABLE2 = 0
Phase A
Phase B
NO
PH1
IA2
IA1
Current value
PH2
IB2
IB1
Current value
0
0
0
0
1
0
0
0
1
1
1
0
0
1
0
0
0
1
2
1
0
0
1
1
0
0
1
3
0
0
0
1
1
0
0
1
1-2 phase excitation - 1/2 step
Table 2
ENABLE1 = ENABLE2 = 0
Phase A
Phase B
No.
PH1
IA2
IA1
Current value
PH2
IB2
IB1
Current value
0
0
0
0
1
*
1
1
0
1
0
0
1
2/3
0
0
1
2/3
2
*
1
1
0
0
0
0
1
3
1
0
1
2/3
0
0
1
2/3
4
1
0
0
1
*
1
1
0
5
1
0
1
2/3
1
0
1
2/3
6
*
1
1
0
1
0
0
1
7
0
0
1
2/3
1
0
1
2/3


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