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Datasheet LB1847 PDF ( 特性, スペック, ピン接続図 )

部品番号 LB1847
部品説明 Stepping Motor Driver
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ロゴ ON Semiconductor ロゴ 
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LB1847 Datasheet, LB1847 PDF,ピン配置, 機能
Ordering number : EN5982A
LB1847
Monolithic Digital IC
PWM Current Control Type
Stepping Motor Driver
http://onsemi.com
Overview
The LB1847 is a driver IC for stepping motors with PWM current control bipolar drive (fixed OFF time). A special
feature of this IC is that VREF voltage is constant while the current can be set in 15 steps, allowing drive of motors
ranging from 1-2 phase exciter types to 4W 1-2 phase exciter types. The current decay pattern can also be selected
(SLOW DECAY, FAST DECAY, MIX DECAY) to increase the decay of regenerative current at chopping OFF,
thereby improving response characteristics. This is especially useful for carriage and paper feed stepping motors in
printers and similar applications where high-precision control and low vibrations are required.
Features
PWM current control (fixed OFF time)
Load current digital selector (1-2, W1-2, 2W1-2, 4W1-2 phase exciter drive possible)
Selectable current decay pattern (SLOW DECAY, FAST DECAY, MIX DECAY)
Simultaneous ON prevention function (feed-through current prevention)
Noise canceler
Built-in thermal shutdown circuit
Built-in logic low-voltage OFF circuit
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Motor supply voltage
Output peek current
Output continuous current
Logic supply voltage
Logic input voltage range
Emitter output voltage
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
VBB
IO peak
IO max
VCC
VIN
VE
Pd max
Topr
Tstg
tW = 20μs
Conditions
Independent IC
With infinitely large heat sink
Ratings
50
1.75
1.5
7.0
-0.3 to VCC
1.0
3.0
20
-20 to +85
-55 to +150
Unit
V
A
A
A
V
V
W
W
°C
°C
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
21809 MS / 11499RM(KI) No.5982-1/15

1 Page



LB1847 pdf, ピン配列
Package Dimensions
unit : mm (typ)
3147C
28
R1.7
1
20.0
26.75
15
14
LB1847
(1.81)
1.78
0.6 1.0
SANYO : DIP28H(500mil)
Pin Assignment
Pd max -- Ta
25
With infinitely large heat sink
20
15
10.4
10
5
Independent IC
3
0
-20 0
20 40 60
Ambient temperature, Ta -- °C
1.56
8085
100
28 27 26 25 24 23 22 21 20 19 18 17 16 15
LB1847
1 2 3 4 5 6 7 8 9 10 11 12 13 14 Top view
No.5982-3/15


3Pages


LB1847 電子部品, 半導体
LB1847
Sequence Table
Phase A
Phase B
No. IA4 IA3 IA2 IA1 ENA1 PHA1 Iout IB4 IB3 IB2 IB1 ENA2 PHA2 Iout
0 1 1 1 1 0 0 100% 0 0 1 0 1 * 0%
11111 0
0 100 0 0 1 0 0
0 17.39
21111 0
0 100 0 0 1 1 0
0 26.08
31110 0
0 95.65 0 1 0 0 0
0 34.78
41101 0
0 91.30 0 1 0 1 0
0 43.48
51100 0
0 86.95 0 1 1 0 0
0 52.17
61011 0
0 82.61 0 1 1 1 0
0 60.87
71010 0
0 78.26 1 0 0 0 0
0 69.56
81001 0
0 73.91 1 0 0 1 0
0 73.91
91000 0
0 69.56 1 0 1 0 0
0 78.26
10 0 1 1 1 0
0 60.87 1 0 1 1 0
0 82.61
11 0 1 1 0 0
0 52.17 1 1 0 0 0
0 86.95
12 0 1 0 1 0
0 43.48 1 1 0 1 0
0 91.30
13 0 1 0 0 0
0 34.78 1 1 1 0 0
0 95.65
14 0 0 1 1 0
0 26.08 1 1 1 1 0
0 100
15 0 0 1 0 0
0 17.39 1 1 1 1 0
0 100
16 0 0 0 1 1
*
0 1111 0
0 100
17 0 0 1 0 0
1 17.39 1 1 1 1 0
0 100
18 0 0 1 1 0
1 26.08 1 1 1 1 0
0 100
19 0 1 0 0 0
1 34.78 1 1 1 0 0
0 95.65
20 0 1 0 1 0
1 43.48 1 1 0 1 0
0 91.30
21 0 1 1 0 0
1 52.17 1 1 0 0 0
0 86.95
22 0 1 1 1 0
1 60.87 1 0 1 1 0
0 82.61
23 1 0 0 0 0
1 69.56 1 0 1 0 0
0 78.26
24 1 0 0 1 0
1 73.91 1 0 0 1 0
0 73.91
25 1 0 1 0 0
1 78.26 1 0 0 0 0
0 69.56
26 1 0 1 1 0
1 82.61 0 1 1 1 0
0 60.87
27 1 1 0 0 0
1 86.95 0 1 1 0 0
0 52.17
28 1 1 0 1 0
1 91.30 0 1 0 1 0
0 43.48
29 1 1 1 0 0
1 95.65 0 1 0 0 0
0 34.78
30 1 1 1 1 0
1 100 0 0 1 1 0
0 26.08
31 1 1 1 1 0
1 100 0 0 1 0 0
0 17.39
* Don’t care
Note: Iout percentage (%) is the calculated setting value.
Phase 1-2
{
{
{
{
Phase W1-2 Phase 2W1-2 Phase 4W1-2
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No.5982-6/15

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