SS133_1311 Datasheet, PDF (2/6 Pages) SEC Electronics Inc. – Unipolar Hall-Effect Digital Switch

SS133
Unipolar Hall-Effect Digital Switch
General Description
The SS133 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 50 mA.
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,
designed to operate continuously over extended
temperatures to +150°C,and are more stable with
both temperature and supply voltage changes.
Internal compensation characteristic makes the
sensitivity increase slightly with temperature
increasing, so that this IC is Particularly suitable to
be used with the commonly low-cost magnets. If a
magnetic flux density larger than threshold Bop,
Output is turned on (low). When a magnetic flux
density reversal falls below Brp, Output will be
turned off (high).
Thanks to its wide operating voltage range,
extended choice of temperature range and high
reliability, it is quite suitable for use in automotive,
industrial and consumer applications.
Glossary of Terms
MilliTesla (mT), Gauss Units of magnetic flux density: 1mT = 10 Gauss
RoHS
Restriction of Hazardous Substances
Operating Point (B_OP) Magnetic flux density applied on the branded side of the package which turns the output
driver ON (V_OUT = V_DSon)
Release Point (B_RP) Magnetic flux density applied on the branded side of the package which turns the output
driver OFF (V_OUT = high)
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V3.10 Nov 1, 2013