A3144LLT 查看數據表（PDF） - Allegro MicroSystems

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A3144LLT

SENSITIVE HALL-EFFECT SWITCHES FOR HIGH-TEMPERATURE OPERATION

Allegro MicroSystems 

3141 THRU 3144

SENSITIVE

HALL-EFFECT SWITCHES

FOR HIGH-TEMP. OPERATION

SENSOR LOCATIONS

(±0.005” [0.13 mm] die placement)

Suffix “LT”

ACTIVE AREA DEPTH

0.030"

0.76 mm

NOM

A

0.089"

2.26 mm

0.043"

1.09 mm

1

2

3

Dwg. MH-008-2C

Suffix “U”

ACTIVE AREA DEPTH

0.016"

0.41 mm

NOM

0.091"

2.31 mm

0.070"

1.78 mm

A

BRANDED

SURFACE 1

2

3

Dwg. MH-002-2B

Suffix “UA”

ACTIVE AREA DEPTH

0.019"

0.48 mm

NOM

0.082"

2.07 mm

TYPICAL OPERATING CHARACTERISTICS (cont.)

CHANGE IN OPERATE POINT

20

15

TA = +25°C

10

5.0

0

-5.0

0

5

10

15

SUPPLY VOLTAGE IN VOLTS

20

25

Dwg. GH-042-1

OPERATION

The output of these devices (pin 3) switches low when the magnetic field

at the Hall sensor exceeds the operate point threshold (BOP). At this point, the

output voltage is VOUT(SAT). When the magnetic field is reduced to below the

release point threshold (BRP), the device output goes high. The difference in

the magnetic operate and release points is called the hysteresis (Bhys) of the

device. This built-in hysteresis allows clean switching of the output even in

the presence of external mechanical vibration and electrical noise.

A

BRANDED

SURFACE 1

2

0.055"

1.39 mm

3

Dwg. MH-011-10

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000

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