SS1881
Hall Latch - High Sensitivity
General Discription
The SS1881 is a bipolar Hall effect sensor IC fabricated from
mixed signal CMOS technology. The device integrates a
voltage regulator, Hall sensor with dynamic offset cancellation
system, Schmitt trigger and an open-drain output driver, all in a
single package.
in 5V and 12V brushless DC motors.
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.
It incorporates advanced chopper stabilization techniques to
provide accurate and stable magnetic switch points. There are
many applications for this HED – Hall Electronic Device - in
addition to those listed above. The design, specifications and
performance have been optimized for commutation applications
The device is delivered in a Small Outline Transistor (SOT) for
surface mount process or in a Plastic Single In Line (SIP 3L flat)
for through- hole mount. Both 3-lead packages are RoHS
compliant.
Glossary of Terms
MilliTesla (mT),
RoHS
Gauss
Units of magnetic flux density: 1mT = 10 Gauss
Restriction of Hazardous Substances
SOT
Small Outline Transistor (SOT package) – also referred with the package code “SO”
Electro-Static Discharge
ESD
BLDC
Brush-Less Direct-Current
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)
Pin Definitions and Descriptions
SOT Pin №
SIP Pin №
Name
Type
upp
pu
ound
Function
1
2
3
1
3
2
V
DD
UT
GND
S
l
y
S
upp
Open Dr
Ground
l
y
V
o
l
ta
ge
pin
O
O
ut
t
ain Output pin
G
r
pin
2
V2.00 May.1, 2012
SECELECTRONICS [ SEC Electronics Inc. ]
