SS1881

Hall Latch - High Sensitivity

2

V2.00

May.1, 2012

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.

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

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.

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),

Gauss

Units of magnetic flux density: 1mT = 10 Gauss

RoHS

Restriction of Hazardous Substances

SOT

Small Outline Transistor (SOT package) – also referred with the package code “SO”

ESD

Electro-Static Discharge

BLDC

Brush-Less Direct-Current

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

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

Pin Definitions and Descriptions

SOT Pin №

SIP Pin №

Name

Type

Function

1

1

VDD

Supply

Supply Voltage pin

2

3

OUT

Output

Open Drain Output pin

3

2

GND

Ground

Ground pin