FS177N

Single Hall Effect Senser

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.

Rev2.0 Apr. 23, 2012

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 FS177N is an integrated Hall effect 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

Vdd

Regulator

Hall

Sensor

1

2

3

Gnd

Output

Halogen Free