SS189 Datasheet, PDF (1/5 Pages) SEC Electronics Inc. – Unipolar Hall-Effect Digital Switch

Packages
3 pin SOT23 (suffix SO)
3 pin SIP (suffix UA)
SS189
Unipolar Hall-Effect Digital Switch
Features and Benefits
– 4.5V to 24V Operation
– -40℃ to 150℃ Superior temperature operation
– Bipolar technology
– Open-collector 25 mA output
– Reverse battery protection
– Small Size-SOT23 3L or SIP 3L
– Solid-state reliability
– Resistant to physical stress
– Activate with small, commercially available
Permanent magnets
Functional Block Diagram
VDD
Voltage
Regulator
Chopper
OUT
Application Examples
– Automotive, Consumer and Industrial
– Solid-state switch
– Brushless DC motor commutation
– Speed detection
– Angular position detection
– Linear position detection
– Proximity detection
Hall
Plate
GND
SIP Package
Pin 1 – V_DD
Pin 2 – GND
Pin 3 – OUT
SOT Package
Pin 1 – V_DD
Pin 2 – OUT
Pin 3 – GND
General Description
The SS189 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.
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V2.10 May 1, 2012