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PDF FS177 Data sheet ( Hoja de datos )
| Número de pieza | FS177 | |
| Descripción | Low Voltage Hall Effect Latch | |
| Fabricantes | Feeling | |
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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
w Wide operating voltage range: 3.0V to 20V
w Maximum output sink current 25mA
w Open-Collector pre-driver
w Reverse polarity protection
w Package : TO-92SP-3
TO-92SP-3
Typical Application Circuit
+12V
FS177
1 Vcc
Output 3
Gnd
2
R1
L1
R2
C1
L2
C2
Brushless DC Fan
Page 1 / 1
Rev0.4 Sep. 25, 2006(LF)
FS177 Data Sheet
Free Datasheet http://www.datasheet-pdf.com/
1 page  
Technology
FS177
Low Voltage Hall Effect Latch
Magnetic Characteristics (1mT=10Gauss)
FS177LF- A
Ta = -20 oC to 100 oC
Parameter
Symbol
Min.
Typ Max.
Operate Point
Bop +5 +35 +60
Release Point
Brp -60 -30
-5
Hysteresis
FS177LF- B
Bhys
30 120
Ta = -20 oC to 100 oC
Parameter
Symbol
Min.
Typ Max.
Operate Point
Bop +5
- +80
Release Point
Brp -80
-
-5
Hysteresis
FS177LF- C
Bhys
30 120
Ta = -20 oC to 100 oC
Parameter
Symbol
Min.
Typ Max.
Operate Point
Bop +5
- +100
Release Point
Brp -100
-
-5
Hysteresis
Bhys
30
120
Unit
Gauss
Gauss
Gauss
Unit
Gauss
Gauss
Gauss
Unit
Gauss
Gauss
Gauss
FS177 Magnetic Hysteresis Characteristics Diagram:
Vout
Vsat
-S -S 0 +N +N
B (Magnetic)
Magnetic Flux Density in Gauss
Page 5 / 5
Rev0.4 Sep. 25, 2006(LF)
FS177 Data Sheet
Free Datasheet http://www.datasheet-pdf.com/
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet FS177.PDF ] | |
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