FS177LF-A 查看數據表（PDF） - Unspecified

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FS177LF-A

Low Voltage Hall Effect Latch

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FS177

Low Voltage Hall Effect Latch

General Description

The FS177 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.

Features

 Wide operating voltage range: 3.0V to 20V

 Maximum output sink current 25mA

 Open-Collector pre-driver

 Reverse polarity protection

 Package : TO-92SP-3

TO-92SP-3

Typical Application Circuit

+12V

R1

L1

L2

FS177

1 Vcc

Output 3

R2

Gnd

2

C1

C2

Brushless DC Fan

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Rev0.7 Apr. 25, 2012(LF)

FS177 Data Sheet

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