参数资料
型号: US4881LUA-AAA-000-BU
厂商: Melexis Technologies NV
文件页数: 39/46页
文件大小: 498K
描述: IC LATCH CMOS H-S TO-92UA
产品目录绘图: UA-92 Series Side
标准包装: 1,000
传感范围: 6mT 跳闸,-6mT 释放
类型: 双极卡锁
电源电压: 2.2 V ~ 18 V
电流 - 电源: 5mA
电流 - 输出(最大): 50mA
输出类型: 数字式,开漏极
工作温度: -40°C ~ 150°C
封装/外壳: TO-226-3,TO-92-3 短体
供应商设备封装: TO-92UA
包装: 散装
产品目录页面: 2792 (CN2011-ZH PDF)
其它名称: US4881LUA
US4881LUA-ND
Section 3 - Applications
3-24
Brushless DC Motor Sensors
The use of Hall Effect Sensors in DC motors eliminates the friction, electrical noise and power loss asso-
ciated with other types of mechanical commutation, such as brushes. Hall ICs provide a long mainte-
nance-free life and offer greater flexibility with respect to direst interface with digital commands.
Figure 26, Brushless DC Motor Sensor
Figure 26, Brushless DC Motor Controller
The US8881 is a brushless DC motor driver that was designed to meet the needs of high volume, low
cost motors which do not require the expensive options needed for servo or other closed loop applica-
tions. The US8881 works with 3 HallIC latches, and provides all motor control via 6 external N-chan-
nel FETs. A complete datasheet for this device is in section 4 of this book.
Figure 26, Brushless DC
Motor Controller
N
N
N
S
S
S
22
&
22
&
22
&
BLDC Motor
Filter
I
SENSE
Resistor
Forward/Reverse
Thermal Switch
R OSC
C
OSC
Speed Adjust
22
&
22
&
V
REF
22
&
0.1?/DIV>
F
1000
?/DIV>
F
V+ = 40 V
Brake
Counter Reset
0.1 ?/DIV>
F
24
23
22
21
20
19
18
17
16
15
14
13
2
3
4
5
6
7
8
9
10
11
12
Supply Voltage
1
Cap Boost "A"
V
REF
 Out
Hall "A" Input
Hall "B" Input
Hall "C" Input
FWD/REV Input
Speed Adjust Input
Oscillator Control
(+)Current Limit (Brake)
Analog Ground
(-)Current Limit (Reset)
Power Ground
 Gate Top "A"
Feedback "A"
 Gate Bottom "A"
Cap Boost "B"
 Gate Top "B"
Feedback "B"
 Gate Bottom "B"
 Gate Top "C"
Feedback "C"
 Gate Bottom "C"
Cap Boost "C"
+
+
+
-
-
-
10 礷
10 礷
10 ?f
UF4002
(3 Places)
V REF
V REF
0.005 ?f
10K&
0.1?/DIV>
F
1000?/DIV>
F
15V
500&
0.1 ?/DIV>
F
20 ?/DIV>
F
1K
1K
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PDF描述
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