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參數(shù)資料
| 型號： | BU52021HFV |
| 元件分類： | Magnetic Field Sensor |
| 英文描述： | MAGNETIC FIELD SENSOR-HALL EFFECT, 0.8-5.5mT, 0.40-2.60V, RECTANGULAR, SURFACE MOUNT |
| 封裝： | VSOF-5 |
| 文件頁數(shù)： | 11/11頁 |
| 文件大?。?/td> | 2025K |
| 代理商： | BU52021HFV |
9/11
Intermittent Operation at Power ON
The bipolar detection Hall IC utilizes an intermittent operation method to detect the magnetic field during startup, as
shown in Fig. 26. It outputs to the appropriate terminal based on the detection result and maintains the output condition
during the standby period. The time from power ON until the end of the initial startup period is an indefinite interval, but it
cannot exceed the maximum period, 100ms. To accommodate the system design, the Hall IC output read should be
programmed within 100ms of power ON, but after the time allowed for the period for ambient temperature and supply voltage.
Magnet Selection
Of the two varieties of permanent magnets available, neodymium generally offers greater magnetic power per volume
than ferrite, thereby enabling the highest degree of miniaturization, Thus, neodymium is best suited for small equipment
applications. Fig. 27 shows the relation between the size (volume) of a neodymium magnet and magnetic flux density. The
graph plots the correlation between the distance (L) from three versions of a 4mm X 4mm cross-section neodymium magnet
(1mm, 2mm, and 3mm thick) and magnetic flux density. Fig. 28 shows Hall IC detection distance – a good guide for
determining the proper size and detection distance of the magnet. Based on the maximum operating point of 5.0 mT
(BU52011HFV, BU52015GUL), the minimum detection distance for the 1mm, 2mm and 3mm magnets are 7.6mm, 9.22mm,
and 10.4mm, respectively. To increase the magnet’s detection distance, either increase its thickness or sectional area.
Power ON
VDD
Startup time
Standby time
Startup time
(Intermittent action)
Indefinite
OUT
(No magnetic field
present)
Indefinite
OUT
(Magnetic field
present)
Low
High
Supply
Fig.26
X=Y=4mm
t=1mm,2mm,3mm
X
t
Y
Flux density measuring point
L: Variable
t
Fig.28 Magnet Dimensions and
Flux Density Measuring Point
Magnet size
Magnet
0
1
2
3
4
5
6
7
8
9
10
0
2
4
6
8
10
12
14
16
18
20
Fig.27
7.6mm
t=3mm
t=1mm
t=2mm
9.2mm 10.4mm
相關(guān)PDF資料 |
PDF描述 |
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| BU52025G-TR | MAGNETIC FIELD SENSOR-HALL EFFECT, 0.8-5.5mT, 0.40-2.60V, RECTANGULAR, SURFACE MOUNT |
| BU52021HFV-TR | MAGNETIC FIELD SENSOR-HALL EFFECT, 0.8-5.5mT, 0.40-2.60V, RECTANGULAR, SURFACE MOUNT |
| BU806AU | 8 A, 200 V, NPN, Si, POWER TRANSISTOR |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| BU52021HFV-TR | 功能描述:工業(yè)霍耳效應(yīng)/磁性傳感器 ULTRA SMALL DETECT SENSOR; 2.4-3.6V RoHS:否 制造商:Honeywell 操作類型: 操作高斯: 工作電源電壓: 電流額定值: 封裝 / 箱體: 輸出下降時間: 工作點(diǎn)最小值/最大值: 安裝風(fēng)格: 最大工作溫度: 最小工作溫度: 最大輸出電流: 封裝: |
| BU52025G | 制造商:ROHM Semiconductor 功能描述:Hole IC,Bop=+/-3.7mT,CMOSout,SSOP5 |
| BU52025G-TR | 功能描述:板機(jī)接口霍耳效應(yīng)/磁性傳感器 2.4-3.6V; +/-3.7mT Bipolar Detection RoHS:否 制造商:Honeywell 類型:Bipolar Hall-Effect Digital Position Sensor 工作電源電壓:3 V to 24 V 電源電流:3.5 mA 最大輸出電流:20 mA 工作點(diǎn)最小值/最大值:5 G, 55 G 最小/最大釋放點(diǎn)（Brp）:- 55 G, - 5 G 最大工作溫度:+ 150 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-23 |
| BU52025G-TR-CUT TAPE | 制造商:ROHM 功能描述:Silicon Monolithic Integrated Circuit, Hall Effet Switch |
| BU52031NVX-TR | 制造商:ROHM Semiconductor 功能描述:IC BU52031 SERIES |
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