FS177LF-C View Datasheet(PDF) - Unspecified
Part Name
Description
MFG CO.
'FS177LF-C' PDF : 10 Pages View PDF
Technology
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
Page 1 / 10
Rev0.7 Apr. 25, 2012(LF)
FS177 Data Sheet
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