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参数资料
| 型号： | A3987SLPTR-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 6/13页 |
| 文件大小： | 0K |
| 描述： | IC DRIVER MICROSTEPPING 24-TSSOP |
| 产品培训模块： | A3987 DMOS Microstepping |
| 标准包装： | 1 |
| 应用： | 步进电机驱动器 |
| 输出数： | 1 |
| 电流 - 输出： | ±1.5A |
| 电压 - 负载： | 8 V ~ 50 V |
| 电源电压： | 3 V ~ 5.5 V |
| 工作温度： | -20°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-TSSOP（0.173"，4.40mm）裸露焊盘 |
| 供应商设备封装： | 24-TSSOP 裸露焊盘 |
| 包装： | 标准包装 |
| 产品目录页面： | 1141 (CN2011-ZH PDF) |
| 其它名称： | 620-1171-6 |
A3987
DMOS Microstepping Driver with Translator
Table 1. Microstep Resolution Truth Table
MS1
L
H
L
H
MS2
L
L
H
H
Microstep Resolution
Full step
Half step
Quarter step
Sixteenth step
Excitation Mode
2 phase
1-2 phase
W1-2 phase
4W1-2 phase
Table 2. Step Sequencing Settings
Home microstep position at Step Angle 4 5o; DIR = H
Full
Step
(#)
Half
Step
(#)
1/4
Step
(#)
1/16
Step
(#)
Phase 1
Current
(% of
Phase 2
Current
(% of
Step
Angle
(°)
Full
Step
(#)
Half
Step
(#)
1/4
Step
(#)
1/16
Step
(#)
Phase 1
Current
(% of
Phase 2
Current
(% of
Step
Angle
(°)
I TRIP (max))
I TRIP (max))
I TRIP (max))
I TRIP (max))
1
1
1
0.00
100.00
0.0
5
9
33
0.00
–100.00
180.0
2
3
4
9.38
18.75
29.69
100.00
98.44
95.31
5.6
11.3
16.9
34
35
36
–9.38
–18.75
–29.69
–100.00
–98.44
–95.31
185.6
191.3
196.9
2
5
6
7
8
37.50
46.88
56.25
64.06
92.19
87.50
82.81
76.56
22.5
28.1
33.8
39.4
10
37
38
39
40
–37.50
–46.88
–56.25
–64.06
–92.19
–87.50
–82.81
–76.56
202.5
208.1
213.8
219.4
1
2
3
9
70.31
70.31
45.0
3
6
11
41
–70.31
–70.31
225.0
10
11
12
76.56
82.81
87.50
64.06
56.25
46.88
50.6
56.3
61.9
42
43
44
–76.56
–82.81
–87.50
–64.06
–56.25
–46.88
230.6
236.3
241.9
4
13
14
15
16
92.19
95.31
98.44
100.00
37.50
29.69
18.75
9.38
67.5
73.1
78.8
84.4
12
45
46
47
48
–92.19
–95.31
–98.44
–100.00
–37.50
–29.69
–18.75
–9.38
247.5
253.1
258.8
264.4
3
5
17
100.00
0.00
90.0
7
13
49
–100.00
0.00
270.0
18
19
20
100.00
98.44
95.31
–9.38
–18.75
–29.69
95.6
101.3
106.9
50
51
52
–100.00
–98.44
–95.31
9.38
18.75
29.69
275.6
281.3
286.9
6
21
22
23
24
92.19
87.50
82.81
76.56
–37.50
–46.88
–56.25
–64.06
112.5
118.1
123.8
129.4
14
53
54
55
56
–92.19
–87.50
–82.81
–76.56
37.50
46.88
56.25
64.06
292.5
298.1
303.8
309.4
2
4
7
25
70.31
–70.31
135.0
4
8
15
57
–70.31
70.31
315.0
26
27
28
64.06
56.25
46.88
–76.56
–82.81
–87.50
140.6
146.3
151.9
58
59
60
–64.06
–56.25
–46.88
76.56
82.81
87.50
320.6
326.3
331.9
8
29
30
31
32
37.50
29.69
18.75
9.38
–92.19
–95.31
–98.44
–100.00
157.5
163.1
168.8
174.4
16
61
62
63
64
–37.50
–29.69
–18.75
–9.38
92.19
95.31
98.44
100.00
337.5
343.1
348.8
354.4
5
9
33
0.00
–100.00
180.0
1
1
1
0.00
100.00
360.0
Allegro MicroSystems, LLC
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
6
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