參數(shù)資料
型號(hào)： BU52025G-TR
元件分類(lèi)： 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： ROHS COMPLIANT, SSOP-5
文件頁(yè)數(shù)： 7/21頁(yè)
文件大?。?/td> 866K
代理商： BU52025G-TR
15/20
●Intermittent Operation at Power ON
The bipolar detection Hall IC adopts an intermittent operation method in detecting the magnetic field during startup, as
shown in Fig. 38. 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 ambient temperature and supply voltage.
※BD7411G don’t adopts an intermittent operation method.
●Magnet Selection
Of the two representative varieties of permanent magnet, 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. 39 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. 40 shows Hall IC detection distance – a good guide for
determining the proper size and detection distance of the magnet. Based on the BU52011HFV, BU52015GUL operating
point max 5.0 mT, the minimum detection distance for the 1mm, 2mm and 3mm magnets would be 7.6mm, 9.22mm, and
10.4mm, respectively. To increase the magnet’s detection distance, either increase its thickness or sectional area.
Magnet material: NEOMAX-44H (material)
Maker: NEOMAX CO.,LTD.
0
1
2
3
4
5
6
7
8
9
10
02
46
8
10
12
14
16
18
20
Distance between magnet and Hall IC [mm]
Magnetic
flux
density[mT]
Fig.39
7.6mm
t=3mm
t=1mm
t=2mm
9.2mm 10.4mm
X=Y=4mm
t=1mm,2mm,3mm
X
t
Y
…Flux density measuring point
L: Variable
t
Fig.40
Magnet Dimensions and
Flux Density Measuring Point
Magnet size
Magnet
VDD
Startup time
Standby time
Startup time
(Intermittent action)
Indefinite
OUT
(No magnetic
field present)
Indefinite
OUT
(Magnetic
field present)
Low
High
Supply current
Fig.38
Power ON
相關(guān)PDF資料
PDF描述
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
BUL43BBS 2 A, 350 V, NPN, Si, POWER TRANSISTOR
BUL43BBU 2 A, 350 V, NPN, Si, POWER TRANSISTOR
BUS-65143-883B 2 CHANNEL(S), 1M bps, MIL-STD-1553 CONTROLLER, CQIP78
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BU52040HFV 制造商:ROHM Semiconductor 功能描述:Hole IC,Bop=+/-3.0mT,CMOSout,HVSOF5
BU52040HFV_10 制造商:ROHM 制造商全稱:Rohm 功能描述:Bipolar Latch Hall IC
BU52040HFV-TR 功能描述:工業(yè)霍耳效應(yīng)/磁性傳感器 DETECTION LATCH SENS BIPOLAR 1.65-3.3V RoHS:否 制造商:Honeywell 操作類(lèi)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(shí)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:
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