LB1817M
Truth Table
Source → Sink
Hall-Effect Input
U VW
1
V-phase → W-phase
HH L
2
V-phase → U-phase
LHL
3
W-phase → U-phase
L HH
4
W-phase → V-phase
L
L
H
5
U-phase → V-phase
HLH
6
U-phase → W-phase
H
L
L
When an “H” level exists for hall-effect input,
UIN1 > UIN2
VIN1 > VIN2
WIN1 > WIN2
Rotation Speed Changeover Table
fOSC = 1MHz
MS1
HL
MS2
H
MS3
H
fFG [Hz]
720 600
HL
L
L
720 600
HL
H
L
1440 1200
HL
L
H
360 300
Index and Timing Chart
No. 4355-8/9