SS3142
Unipolar Hall-Effect Digital Switch
General Descriptions
The SS3142 is a unipolar Hall-effect sensor IC fabri-
cated 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 am-
plifier, 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.
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 ex-
tended choice of temperature range, it is quite suitable
for use in automotive, industrial and consumer appli-
cations.
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.
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
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)
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V3.10 Nov 1, 2013
SECELECTRONICS [ SEC Electronics Inc. ]
