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參數(shù)資料
| 型號： | LB11847 |
| 廠商： | SANYO SEMICONDUCTOR CO LTD |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | STEPPER MOTOR CONTROLLER, 1.75 A, PDIP28 |
| 封裝： | HEAT SINK, DIP-28 |
| 文件頁數(shù)： | 4/15頁 |
| 文件大?。?/td> | 150K |
| 代理商： | LB11847 |
LB11847
No.6183-12/15
Sample Application Circuit
Notes on Usage
1. External diodes
Because this IC uses upper-side transistor switching in SLOW DECAY mode and dual-side transistor switching in
FAST DECAY mode, it requires external diodes between the OUT pins and ground for the regenerative current during
switching OFF. Use Schottky barrier diodes with low VF.
2. VREF pin
Because the VREF pin serves for input of the set current reference voltage, precautions against noise must be taken.
The input voltage range is 0 to 3.0V.
3. GND pin
The ground circuit for this IC must be designed so as to allow for high-current switching. Blocks where high current
flows must use low-impedance patterns and must be removed from small-signal lines. Especially the ground
connection for the sensing resistor RE at pin E, and the ground connection for the Schottky barrier diodes should be in
close proximity to the IC ground.
The capacitors between VCC and ground, and VBB and ground should be placed close to the VCC and VBB pins,
respectively.
1.5V to 4.0V
voltage setting
Logic input
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
V
CC
PHASE1
ENABLE1
I A
1
I A
2
I A
3
I A
4
I B
4
I B
3
I B
2
I B
1
ENABLE2
PHASE2
GND
MD
V
REF
1
CR1
E1
DECAY1
OUT
A
OUT
A
OUT
B
OUT
B
DECAY2
E2
CR2
V
REF
2
V
BB
10
μF
5V
470pF
47
μF
42V
0.51
Ω
0.51
Ω
15k
Ω
15k
Ω
1.5V
SBD
L
LB11847
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