FS41

Single Hall Effect Latch

This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.

No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.

Rev1.2 July. 04, 2011

P.1

FEELING

TECHNOLOGY

Features

Wide operating voltage range: 3.0V to 28V

Maximum output sink current 50mA

Open-Collector pre-driver

Power reverse polarity protection

Available in SIP-3L package

General Description

The FS41 is an integrated Hall effect latched sensor designed for electronic commutation of brush-less DC motor

applications. The device includes an on-chip Hall voltage generator for magnetic sensing, a comparator that

amplifies the Hall voltage, and a Schmitt trigger to provide switching hysteresis for noise rejection, and

open-collector output. An internal bandgap regulator is used to provide temperature compensated supply voltage

for internal circuits and allows a wide operating supply range.

A north pole of sufficient strength will turn the output ON. In the absence of a magnetic field, the output is OFF.

Block Diagram

Figure.1

Pb Free

Vdd

Regulator

Hall

Sensor

1

2

3

Gnd

Output