LB11847 Datasheet, PDF (4/16 Pages) Sanyo Semicon Device – PWM Current Control Type Stepping Motor Driver

Truth Table
PHASE
H
L
ENABLE
L
L
H
OUT_A
H
L
OFF
LB11847
OUT_A
L
H
OFF
Set Current Truth Table
I_A4
I_A3
I_A2
I_A1
1
1
1
1
1
1
1
0
1
1
0
1
1
1
0
0
1
0
1
1
1
0
1
0
1
0
0
1
1
0
0
0
0
1
1
1
0
1
1
0
0
1
0
1
0
1
0
0
0
0
1
1
0
0
1
0
Set current I_OUT
11.5/11.5 × V_REF/3.04RE = I_OUT
11.0/11.5 × V_REF/3.04RE = I_OUT
10.5/11.5 × V_REF/3.04RE = I_OUT
10.0/11.5 × V_REF/3.04RE = I_OUT
9.5/11.5 × V_REF/3.04RE = I_OUT
9.0/11.5 × V_REF/3.04RE = I_OUT
8.5/11.5 × V_REF/3.04RE = I_OUT
8.0/11.5 × V_REF/3.04RE = I_OUT
7.0/11.5 × V_REF/3.04RE = I_OUT
6.0/11.5 × V_REF/3.04RE = I_OUT
5.0/11.5 × V_REF/3.04RE = I_OUT
4.0/11.5 × V_REF/3.04RE = I_OUT
3.0/11.5 × V_REF/3.04RE = I_OUT
2.0/11.5 × V_REF/3.04RE = I_OUT
* Current ratio (%) is the calculated set current value.
Current Decay Switching Truth Table
Current decay mode
DECAY pin
SLOW DECAY
H
FAST DECAY
L
MIX DECAY
L
MD pin
L
L
4V to 1.5V input
voltage setting
Current ratio (%)
100
95.65
91.30
86.95
82.61
78.26
73.91
69.56
60.87
52.17
43.48
34.78
26.08
17.39
Output chopping
Upper-side chopping
Dual-side chopping
CR voltage > MD : dual-side chopping
CR voltage < MD : upper-side chopping
No. 6183-4/16