DRV8834 Datasheet, PDF (15/30 Pages) Texas Instruments – DUAL BRIDGE STEPPER OR DC MOTOR DRIVER

DRV8834
www.ti.com
1/32 STEP
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
1/16 STEP
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
SLVSB19A – FEBRUARY 2012 – REVISED MARCH 2012
Table 5. Current and Step Directions (continued)
1/8 STEP
25
26
27
28
29
30
31
32
1/4 STEP
13
14
15
16
1/2 STEP
7
8
FULL STEP
70%
4
WINDING WINDING
CURRENT A CURRENT B
-10%
-100%
-5%
-100%
0%
-100%
5%
-100%
10%
-100%
15%
-99%
20%
-98%
24%
-97%
29%
-96%
34%
-94%
38%
-92%
43%
-90%
47%
-88%
51%
-86%
56%
-83%
60%
-80%
63%
-77%
67%
-74%
71%
-71%
74%
-67%
77%
-63%
80%
-60%
83%
-56%
86%
-51%
88%
-47%
90%
-43%
92%
-38%
94%
-34%
96%
-29%
97%
-24%
98%
-20%
99%
-15%
100%
-10%
100%
-5%
ELECTRICAL
ANGLE
264
267
270
273
276
278
281
284
287
290
293
295
298
301
304
307
309
312
315
318
321
323
326
329
332
335
338
340
343
346
349
352
354
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 kΩ
- 50 kΩ.
Copyright © 2012, Texas Instruments Incorporated
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