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OCH1440
Bipolar Hall Effect Position Sensor
General Description
The OCH1440 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 amplifiers the
Hall voltage, and a Schmitt trigger to provide
switching hysteresis for noise rejection, and and
integrated the pull-up resistor. An internal bandgap
regulator is used to provide temperature
compensated supply voltage for internal circuits and
allows a wide operating supply range. To minimize
the BOM cost, only one external component is
needed to complete the application circuit.
Features
Wide operating voltage range: 2.5V~20V
Wide operating temperature range: -40°C ~+125°C
Integrated pull-up resistor
Package: SIP3 & SOT23-3L
Applications
Rotor Position Sensing
Brush-less DC Fan
Brush-less DC Motor
Speed measurement
Revolution counting
Pin Configuration
SIP-3L (Top View)
SOT23-3L (Top View)
Name
VCC
GND
Output
SIP3
1
2
3
No.
SOT23-3L
1
3
2
Status
P
P
O
Application Circuit
Description
IC Power Supply
IC Ground
It is low state during the S magnetic field
Fig 1, Typical Application Circuitry of OCH1440
Page 1-2
Ver. 1.1 Feb .27, 2018
源于灿瑞 磁传天下

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OCH1440
Ordering Information
OCH1440XXX
Package
M:SIP-3L
W:SOT23-3L
Packing
Blank: Tube or Bulk
A:Tape&Reel
Temperature Grade
D: -40°C~125°C
Part Number Package Type
OCH1440ME
SIP-3L
OCH1440WAE SOT23-3L
Packing Qty
Bulk
1000pcs/bag
7-in reel
3000pcs/reel
Brp
(Gauss)
-80 ~ -5
Bop
(Gauss)
5 ~ 80
Temperature
-40125
Eco Plan
RoHS
-80 ~ -5 5 ~ 80 -40125Green
Lead
Cu
Cu
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Page 2-2
Ver. 1.1 Feb .27, 2018
源于灿瑞 磁传天下