SS1344

Unipolar Hall Switch-Low Sensitivity

2

3.10

Nov 1, 2013

General Description

The SS1344 is a unipolar Hall-effect sensor IC fab-

ricated from CMOS technology. The device inte-

grates a voltage regulator, Hall sensor with dy-

namic offset cancellation system, small signal am-

plifier, Schmitt trigger and an open-drain output

driver. With suitable output pull up, they can be

used with bipolar or CMOS logic circuits.

These Hall-effect switches are monolithic integrat-

ed circuits with tighter magnetic specifications, de-

signed to operate continuously over extended tem-

peratures to +150°C,and are more stable with both

temperature and supply voltage changes. The uni-

polar switching characteristic makes these devices

ideal for use with a simple bar or rod magnet.

Thanks to its wide operating voltage range and ex-

tended choice of temperature range, it is quite suit-

able for use in automotive, industrial and consumer

applications.

The device is delivered in a Small Outline Transis-

tor (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

Operating Point (BOP)

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

output driver ON (VOUT = VDSon)

Release Point (BRP)

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

output driver OFF (VOUT = high)