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OCH147
Bipolar Hall Effect Position Sensor
General Description
The OCH147 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 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: 3.8V~30V
Wide operating temperature range: -40°C ~+125°C
Reverse polarity protection
Integrated pull-up resistor
Package: SOT23-3L
Applications
Rotor Position Sensing
Brush-less DC Fan
Brush-less DC Motor
Speed measurement
Revolution counting
Pin Configuration
(Top View)
3
GND
VCC
1
OUTPUT
2
Name
Vcc
Gnd
Output
No.
1
3
2
Application Circuit
Status
P
P
O
Description
IC Power Supply
IC Ground
It is low state during the S magnetic field
Figure 1, application circuit of OCH147
Note: CIN is for power stabilization and to strengthen the noise immunity, the recommended capacitance is 0.1~1uF.
If the VCC power supply is clean, the CIN can be cancelled.
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Ver. 1.3 Feb .27, 2018
源于灿瑞 磁传天下

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OCH147
Bipolar Hall Effect Position Sensor
Ordering Information
OCH147XXX
Package:
W:SOT23-3L
Packing:
A: Tape & Reel
Temperature Grade:
E: -40~125
Part Number
OCH147WAE
Package Type
SOT23-3L
Package Qty
7-in reel
3000pcs/reel
Brp
(Gauss)
-80 ~ -5
Bop
(Gauss)
5 ~ 80
Temperature
Eco Plan
Lead/Ball
Finish
-40125Green
Cu Sn
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Ver. 1.3 Feb .27, 2018
源于灿瑞 磁传天下