SS443

Unipolar Hall-Effect Digital Switch

2

V3.10

Nov 1, 2013

General

Description

The SS443 is a unipolar Hall-effect sensor IC fabricated

from bipolar technology. The device integrates a volt-

age regulator, reverse battery protection diode, Hall

sensor with dynamic offset cancellation system, tem-

perature 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°C,and are more stable with both temperature and

supply voltage changes. The unipolar switching charac-

teristic makes these devices ideal for use with a simple

bar or rod magnet.

Thanks to its wide operating voltage range and extend-

ed 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