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PDF LV8727 Data sheet ( Hoja de datos )
| Número de pieza | LV8727 | |
| Descripción | PWM Current Control Stepping Motor Driver | |
| Fabricantes | ON Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LV8727 (archivo pdf) en la parte inferior de esta página. Total 23 Páginas | ||
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Ordering number : ENA1998
LV8727
Bi-CMOS LSI
PWM Current Control
Stepping Motor Driver
http://onsemi.com
Overview
The LV8727 is a PWM current-controlled micro step bipolar stepping motor driver. This driver can do eight ways of
micro step resolution of Half, 1/8, 1/16, 1/32, 1/64, 1/128, 1/10, 1/20 Step, and can drive simply by the step input.
Features
• Single-channel PWM current control stepping motor driver.
• Output on-resistance (upper side : 0.25Ω ; lower side : 0.15Ω ; total of upper and lower : 0.4Ω ; Ta = 25°C, IO = 4.0A)
• Half, 1/8, 1/16, 1/32, 1/64, 1/128, 1/10, 1/20 Step are selectable.
• Advance the excitation step with the only step signal input.
• BiCDMOS process IC.
• Available forward reverse control.
• IO max=4.0A
• Input pull down resistance
• Thermal shutdown circuit.
• With reset pin and enable pin.
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
Unit
Supply voltage
Output current
Output peak current
Logic input voltage
VREF input voltage
VM max
IO max
IO peak
VIN max
VREF max
tw≤10ms, duty 20%
50 V
4A
4.6 A
6V
6V
MO / DOWN pin input voltage
Allowable power dissipation
VMO /VDOWN max
Pd max
Indipendent IC
6
2.45
V
W
Operating temperature
Topr
-30 to +85
°C
Storage temperature
Tstg
-55 to +150
°C
Caution 1) Absolute maximum ratings represent the value which cannot be exceeded for any length of time.
Caution 2) Even when the device is used within the range of absolute maximum ratings, as a result of continuous usage under high temperature, high current,
high voltage, or drastic temperature change, the reliability of the IC may be degraded. Please contact us for the further details.
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating
Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.
Semiconductor Components Industries, LLC, 2013
June, 2013
N1611 SY 20111019-S00003 No.A1998-1/23
1 page  
Pin Assignment
LV8727
LV8727
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Pin Functions
Pin No. Pin Name
7 MD1
8 MD2
9 MD3
10 OE
11 RST
12 FR
13 STEP
Pin Functtion
Excitation mode switching pin
Excitation mode switching pin
Excitation mode switching pin
Output enable signal input pin
Reset signal input pin
Forward / Reverse signal input pin
Clock pulse signal input pin
Internal 5V
regulator
Equivalent Circuit
Top view
6 ST
Chip enable input pin.
GND
Internal 5V
regulator
1 OUT1B
2 RF1
3 PGND1
4 OUT1A
5 VM1
21 VM2
22 OUT2B
23 PGND2
24 RF2
25 OUT2A
Channel 1 OUTB output pin.
Channel 1 current-sense resistor connection pin.
Channel 1 power GND
Channel 1 OUTA output pin.
Channel 1 motor supply connect pin
Channel 2 motor supply connect pin
Channel 2 OUTB output pin.
Channel 2 power GND
Channel 2 current-sense resistor connection pin.
Channel 2 OUTA output pin.
GND
5 21
4 25
1 22
GND
3 23
2 24
Continued on next page.
No.A1998-5/23
5 Page 
Continued from preceding page.
STEP
θ26
θ27
θ28
θ29
θ30
θ31
θ32
θ33
θ34
θ35
θ36
θ37
θ38
θ39
θ40
θ41
θ42
θ43
θ44
θ45
θ46
θ47
θ48
θ49
θ50
θ51
θ52
θ53
θ54
θ55
θ56
θ57
θ58
θ59
θ60
θ61
θ62
θ63
θ64
θ65
θ66
θ67
θ68
θ69
θ70
θ71
θ72
θ73
θ74
θ75
θ76
θ77
θ78
θ79
θ80
θ81
θ82
θ83
θ84
θ85
θ86
θ87
θ88
θ89
θ90
1/128 (%)
1ch 2ch
95 31
95 33
94 34
94 35
93 36
93 37
92 38
92 39
91 41
91 42
90 43
90 44
89 45
89 46
88 47
88 48
87 49
86 50
86 51
85 52
84 53
84 55
83 56
82 57
82 58
81 59
80 60
80 61
79 62
78 62
77 63
77 64
76 65
75 66
74 67
73 68
72 69
72 70
71 71
70 72
69 72
68 73
67 74
66 75
65 76
64 77
63 77
62 78
62 79
61 80
60 80
59 81
58 82
57 82
56 83
55 84
53 84
52 85
51 86
50 86
49 87
48 88
47 88
46 89
45 89
1/64 (%)
1ch 2ch
95 31
94 34
93 36
92 38
91 41
90 43
89 45
88 47
87 49
86 51
84 53
83 56
82 58
80 60
79 62
77 63
76 65
74 67
72 69
71 71
69 72
67 74
65 76
63 77
62 79
60 80
58 82
56 83
53 84
51 86
49 87
47 88
45 89
LV8727
1/32 (%)
1ch 2ch
1/16 (%)
1ch 2ch
94 34
92 38 92 38
90 43
88 47 88 47
86 51
83 56 83 56
80 60
77 63 77 63
74 67
71 71 71 71
67 74
63 77 63 77
60 80
56 83 56 83
51 86
47 88 47 88
1/8 (%)
1ch 2ch
Halfe (%)
1ch 2ch
92 38
83 56
71 71 71 71
56 83
Continued on next page.
No.A1998-11/23
11 Page | ||
| Páginas | Total 23 Páginas | |
| PDF Descargar | [ Datasheet LV8727.PDF ] | |
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