SS441

Unipolar Hall-Effect Digital Switch

2

V2.00

May 1, 2012

General

Description

The SS441 is a unipolar Hall-effect sensor IC fabricated from

bipolar technology. The device integrates a voltage regulator,

reverse battery protection diode, Hall sensor with dynamic

offset cancellation system, temperature compensation

circuitry, small signal amplifier, Schmitt trigger and an

open-collector output to sink up to 25 mA. With suitable

output pull up, they can be used with bipolar or CMOS logic

circuits.

These Hall-effect switches are monolithic integrated circuits

with tighter magnetic specifications, designed to operate

continuously over extended temperatures to +150℃,and are

more stable with both temperature and supply voltage

changes. The unipolar switching characteristic makes these

devices ideal for use with a simple bar or rod magnet.

Thanks to its wide operating voltage range and extended

choice of temperature range, it is quite suitable for use in

automotive, industrial and consumer applications.

The device is delivered in a Small Outline Transistor (SOT)

or in a Plastic Single In Line (SIP 3L flat). Both 3-lead

packages are RoHS compliant.

Glossary of Terms

MilliTesla (mT),

Gauss

Units of magnetic flux density: 1mT = 10 Gauss

RoHS

Restriction of Hazardous Substances

Magnetic flux density applied on the branded side of the package which turns the output

Magnetic flux density applied on the branded side of the package which turns the output