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Smart Electronics U18 / US1881 / OH188/1881, typing U18, hall element, hall sensor, hall switch

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Smart Electronics U18 / US1881 / OH188/1881, typing U18, hall element, hall sensor, hall switch

U18 / US1881 / OH188/1881, typing U18, hall element, hall sensor, hall switch

Applications

-Solid state switch

-Brushless DC motor commutation

-Speed sensing

-Position sensing

-Angular position sensing

-Current sensing
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Order Information

Part number

US1881

Operate temperature

K:-40~125℃

Package

TO-92UA/SOT23

 

General Description

The US1881 is a bipolar Hall effect sensor IC fabricated from mixed signal CMOS technology. It incorporates advanced chopper
stabilization techniques to provide accurate and stable magnetic switch points. There are many applications for this HED in addition to
those listed above. The design, specifications and performance have been optimized for commutation applications in 5V and 12V brushless DC motors.

The output transistor will be latched on (BOP) in the presence of a sufficiently strong South pole magnetic field facing the marked side of the package.
Similarly, the output will be latched off (BRP) in the presence of a North field. The SOT-23 device is reversed from the UA package.

The SOT-23 output transistor will be latched on in the presence of a sufficiently strong North pole magnetic field applied to the marked face.

 

 

Applications

-Solid state switch

-Brushless DC motor commutation

-Speed sensing

-Position sensing

-Angular position sensing

-Current sensing

 

Features

-Chopper stabilized amplifier stage

-Optimized for BDC motor applications

-New miniature package / thin, high reliability package

-Operation down to 3.5V

-CMOS for optimum stability, quality and cost

 

 

Functional Block Diagrams

 

Absolute Maximum Ratings ( at Ta=25℃ )

Characteristics

Symbol

Values

Unit

Supply Voltage

Vdd

3.5~24

V

Supply Current

IDD

50

mA

Output Voltage

VOUT

3.5~24

V

Output Current

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