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DRV8834RGET Datasheet(数据表) 15 Page - Texas Instruments

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部件型号  DRV8834RGET
说明  DUAL BRIDGE STEPPER OR DC MOTOR DRIVER
下载  30 Pages
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
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DRV8834RGET Datasheet(HTML) 15 Page - Texas Instruments

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DRV8834
www.ti.com
SLVSB19A – FEBRUARY 2012 – REVISED MARCH 2012
Table 5. Current and Step Directions (continued)
FULL STEP
WINDING
WINDING
ELECTRICAL
1/32 STEP
1/16 STEP
1/8 STEP
1/4 STEP
1/2 STEP
70%
CURRENT A
CURRENT B
ANGLE
95
48
-10%
-100%
264
96
-5%
-100%
267
97
49
25
13
7
0%
-100%
270
98
5%
-100%
273
99
50
10%
-100%
276
100
15%
-99%
278
101
51
26
20%
-98%
281
102
24%
-97%
284
103
52
29%
-96%
287
104
34%
-94%
290
105
53
27
14
38%
-92%
293
106
43%
-90%
295
107
54
47%
-88%
298
108
51%
-86%
301
109
55
28
56%
-83%
304
110
60%
-80%
307
111
56
63%
-77%
309
112
67%
-74%
312
113
57
29
15
8
4
71%
-71%
315
114
74%
-67%
318
115
58
77%
-63%
321
116
80%
-60%
323
117
59
30
83%
-56%
326
118
86%
-51%
329
119
60
88%
-47%
332
120
90%
-43%
335
121
61
31
16
92%
-38%
338
122
94%
-34%
340
123
62
96%
-29%
343
124
97%
-24%
346
125
63
32
98%
-20%
349
126
99%
-15%
352
127
64
100%
-10%
354
128
100%
-5%
357
nSLEEP Operation
Driving nSLEEP low will put the device into a low power sleep state. In this state, the H-bridges are disabled, the
gate drive charge pump is stopped, all internal logic is reset (note that this returns the indexer to the home state),
the VINT supply is disabled, and all internal clocks are stopped. All inputs are ignored until nSLEEP returns
inactive high.
Since the VINT supply is disabled during sleep mode, it cannot be used to provide a logic high signal to the
nSLEEP pin. To simplify board design, the nSLEEP can be pulled up directly to the supply (VM) if it is not
actively driven. Unless VM is less than 5.75 V, a pullup resistor is required.
The nSLEEP pin is protected by a zener diode that will clamp the pin voltage to approximately 6.5 V. The pullup
resistor limits the current to the input in case VM is higher than 6.5 V. The recommended pullup resistor is 20 k
Ω
- 50 k
Ω.
Copyright © 2012, Texas Instruments Incorporated
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