LB11847_08 Datasheet, PDF (4/15 Pages) Sanyo Semicon Device – PWM Current Control Type Stepping Motor Driver

Pin Function
Pin number
Pin name
1
MD
2
VREF1
13
VREF2
3
CR1
12
CR2
4
E1
11
E2
5
DECAY1
10
DECYA2
6
7
8
9
14
15
27
16
26
17
22, 23
24, 25
21, 20
19, 18
28
OUT _A
OUT _A
OUT _B
OUT _B
VBB
GND
PHASE1
PHASE2
ENABLE1
ENABLE2
IA4, IA3
IA2, IA1
IB4, IB3
IB2, IB1
VCC
Truth Table
PHASE
ENABLE
H
L
L
L
-
H
LB11847
Function descripyion
Sets the OFF time for FAST mode and SLOW mode in MIX DECAY.
Setting input range: 4V to 1.5V
Output set current reference supply pins.
Setting voltage range: 0V to 3V
Output OFF time setting pins for switching operation.
Pins for controlling the set current with sensing resistor RE.
SLOW mode/FAST mode selector pins.
SLOW DECAY : H
FAST DECAY : L
Output pins.
Output stage supply voltage pin.
Ground pin.
Output phase selector input pins.
Output ON/OFF setting input pins.
Output set current digital input pins.
15-stage voltage setting.
Logic block supply voltage pin.
OUT _A
H
L
OFF
OUT _A
L
H
OFF
Set Current Truth Table
IA4
IA3
IA2
IA1
Set current IOUT
1
1
1
1
11.5/11.5 × VREF/3.04RE = IOUT
1
1
1
0
11.0/11.5 × VREF/3.04RE = IOUT
1
1
0
1
10.5/11.5 × VREF/3.04RE = IOUT
1
1
0
0
10.0/11.5 × VREF/3.04RE = IOUT
1
0
1
1
9.5/11.5 × VREF/3.04RE = IOUT
1
0
1
0
9.0/11.5 × VREF/3.04RE = IOUT
1
0
0
1
8.5/11.5 × VREF/3.04RE = IOUT
1
0
0
0
8.0/11.5 × VREF/3.04RE = IOUT
0
1
1
1
7.0/11.5 × VREF/3.04RE = IOUT
0
1
1
0
6.0/11.5 × VREF/3.04RE = IOUT
0
1
0
1
5.0/11.5 × VREF/3.04RE = IOUT
0
1
0
0
4.0/11.5 × VREF/3.04RE = IOUT
0
0
1
1
3.0/11.5 × VREF/3.04RE = IOUT
0
0
1
0
2.0/11.5 × VREF/3.04RE = IOUT
* Current ratio (%) is the calculated set current value.
Current Decay Switching Truth Table
Current decay mode
DECAY pin
MD pin
SLOW DECAY
H
L
FAST DECAY
L
L
MIX DECAY
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.6183-4/15