SS41F

Hall Latch Position Sensor

2

V2.00

May 1, 2012

General Description

The SS41F is an integrated Hall effect latched sensor

designed for electronic commutation of brush-less DC motor

applications. 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.

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 supply voltage

changes. If a magnetic flux density larger than threshold Bop,

Output is turned on (low). The output state is held until a

magnetic flux density reversal falls below Brp, causing

Output to be turned off (high).

Thanks to its wide operating voltage range and extended

choice of temperature range, it is quite suitable for use in DC

motor 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.

Glossary of Terms

MilliTesla (mT),

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)