SS41F

Hall Latch Position Sensor

2

V3.10

Nov 1, 2013

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, de-

signed to operate continuously over extended tem-

peratures to +150°C,and are more stable with both

temperature and supply voltage changes. If a mag-

netic 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 ex-

tended choice of temperature range, it is quite suita-

ble 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), Gauss

Units of magnetic flux density: 1mT = 10 Gauss

RoHS

Restriction of Hazardous Substances

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