Low Voltage Hall Effect Latch - Feeling
Description
FS177
Technology
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.
Low Voltage Hall Effect Latch
Features
w w w w w 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 Gnd
2
Output 3
R2
C1
C2
Brushless DC Fan
Rev0.
4 Sep.
25, 2006(LF) FS177 Data Sheet
Page 1 / 1
Free Datasheet http://www.
datasheet-pdf.
com/
FS177
Technology
Functional Block Diagram
VCC
Low Voltage Hall Effect Latch
1
Regulator
Hall Sensor
3 Output
2 Gnd
Mark View
Pin Descriptions
NAME NO.
STATUS VCC 1 P DESCRIPTION IC Power Supply
177
.
GND
2
P
IC Ground It is low state during the N magnetic field.
Output
1 2 3
3
O
Year Ex: 1 (2001) 2 (2002)
Week of Year
Product Ver.
Rev0.
4 Sep.
25, 2006(LF) FS177 Data Sheet
Page 2 / 2
Free Datasheet http://www.
datasheet-pdf.
c
FS177
Technology
Absolute Maximum Ratings ( at Ta = 25 oC )
VCC Pin Voltage -----------------------------------------------------------------------------Output OFF Voltage, Vce ------------------------------------------------------------------Output ON Current (Io) Continuous Current ---------------------------------------------------------------Power Dissipation Ta=25 C -----------------------------------------------------------------------------Ta=100 C -------------...
Similar Datasheet
