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LB1847 데이터시트(PDF) 5 Page - Sanyo Semicon Device

부품명 LB1847
상세설명  PWM Current Control Type Stepping Motor Driver
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제조업체  SANYO [Sanyo Semicon Device]
홈페이지  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

LB1847 데이터시트(HTML) 5 Page - Sanyo Semicon Device

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LB1847
No.5982-5/15
Pin Function
Pin No.
Pin name
Function
1
MD
Sets the OFF time for FAST mode and SLOW mode in MIX DECAY.
Setting input range: 4V to 1.5V.
2
13
VREF1
VREF2
Output set current reference supply pin.
Setting voltage range: 0V to 3V.
3
12
CR1
CR2
Output OFF time setting pin for switching operation.
4
11
E1
E2
Pin for controlling the set current with sensing resistor RE.
5
10
DECAY1
DECAY2
SLOW mode/FAST mode selector pin.
DECAY2 SLOW DECAY: H
FAST DECAY: L
6
7
8
9
OUTA
OUTA
OUTB
OUTB
Output pin.
14
VBB
Output stage supply voltage pin.
15
GND
Ground pin.
27
16
PHASE1
PHASE2
Output phase selector input pin
26
17
ENABLE1
ENABLE2
Output ON/OFF setting input pin.
22,23
24,25
21,20
19,18
IA4,IA3
IA2,IA1
IB4,IB3
IB2,IB1
Output set current digital input pin.
15-stage voltage setting.
28
VCC
Logic block supply voltage pin
Truth Table
PHASE
ENABLE
OUTA
OUTA
H
L
H
L
L
L
L
H
H
OFF
OFF
Set Current Truth Table
IA4
IA3
IA2
IA1
Set current Iout
Current ratio
1
1
1
1
11.5/11.5
× VREF/3.04RE = Iout
100
1
1
1
0
11.0/11.5
× VREF/3.04RE = Iout
95.65
1
1
0
1
10.5/11.5
× VREF/3.04RE = Iout
91.30
1
1
0
0
10.0/11.5
× VREF/3.04RE = Iout
86.95
1
0
1
1
9.5/11.5
× VREF/3.04RE = Iout
82.61
1
0
1
0
9.0/11.5
× VREF/3.04RE = Iout
78.26
1
0
0
1
8.5/11.5
× VREF/3.04RE = Iout
73.91
1
0
0
0
8.0/11.5
× VREF/3.04RE = Iout
69.56
0
1
1
1
7.0/11.5
× VREF/3.04RE = Iout
60.87
0
1
1
0
6.0/11.5
× VREF/3.04RE = Iout
52.17
0
1
0
1
5.0/11.5
× VREF/3.04RE = Iout
43.48
0
1
0
0
4.0/11.5
× VREF/3.04RE = Iout
34.78
0
0
1
1
3.0/11.5
× VREF/3.04RE = Iout
26.08
0
0
1
0
2.0/11.5
× VREF/3.04RE = Iout
17.39
* Current ratio (%) is the calculated set current value.
Current Decay Switching Truth Table
Current decay mode
DECAY pin
MD pin
Output chopping
SLOW DECAY
H
L
Upper-side chopping
FAST DECAY
L
L
Dual-side chopping
MIX DECAY
L
4V to 1.5V input
voltage setting
CR voltage > MD: dual-side chopping
CR voltage < MD: upper-side chopping


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