參數(shù)資料
型號: LV8731V
廠商: SANYO SEMICONDUCTOR CO LTD
元件分類: 運動控制電子
英文描述: STEPPER MOTOR CONTROLLER, 2.5 A, PDSO44
封裝: 0.275 INCH, SSOP-44
文件頁數(shù): 17/26頁
文件大?。?/td> 323K
代理商: LV8731V
LV8731V
Application Circuit Example
Stepping motor driver circuit (DM = Low)
VG
VM
CP1
VREG5
ATT2
ATT1
EMO
CEM
EMM
CHOP
MONI
RST/BLK
STEP/DC22
FR/DC21
MD2/DC12
DM
OE
ST
VREF
GND
MD1/DC11
CP2
OUT1A
NC
VM1
RF1
OUT1B
OUT2A
RF2
VM2
NC
PGND
OUT2B
VM2
PGND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
L
V8731V
+-
100pF
200pF
24V
1.5V
+
-
Logic input
Clock input
M
Short-circuit state
detection monitor
Position detection
monitor
The formulae for setting the constants in the examples of the application circuits above are as follows :
Constant current (100%) setting
When VREF = 1.5V
IOUT = VREF/5/RF resistance
= 1.5V/5/0.3
Ω = 1.0A
Chopping frequency setting
Fchop = Ichop/ (Cchop × Vtchop × 2)
= 10
μA/ (200pF × 0.5V × 2) = 50kHz
Timer latch time when the output is short-circuited
Tcem = Ccem × Vtcem/Icem
= 100pF × 1V/10
μA = 10μs
No.A1482-24/26
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