OHHALLSENSOR OH44E Unipolar hall effect switch ic Datasheet

OH44E
Unipolar Hall Effect Switch IC
Order Information
PN
OH44E
Operate temperature
-40~150℃
Package
1000pcs/bag
General Description
Description:: OH44E is a switched Hall-Effect IC which is for
contactless switching applications. The device includes an on-chip Hall voltage
generator for magnetic sensing, an amplifier that amplifies the Hall voltage, a
schmitt trigger to provide switching hysteresis for noise rejection, and an
open-collector output.
Features
Applications
� High reliability
� Speed measurement
� good temperature performance
� Home appliances
� anti-environmental stress
� Position detection
� Reverse Polarity Protection
� Flow measurement
Absolute Maximum Ratings (TA=25℃)
Supply Voltage VCC··············4-30V
Operating Temperature Range TA ········-40 ~ 150℃
Output Current IO···················50mA
Storage Temperature RangeTS ················-65~150℃
Magnetic-electrical Transfer Characteristics Functional Block Diagram
Diagram:
VOUT
Pin1.VCC
VOH
REG
BH
Pin3.Vout
AMP
m
VOL
0
BRP
BOP
B
Pin2.GND
Electrical Characteristics (Ta= 25°C )
Value
Parameter
Symbol
Conditions
Unit
Min
Typ
Max
4
-
30
V
Supply Voltage
VCC
Output Saturation Voltage
VOL
Vcc=4.5V, Iout=20mA,
B≥BOP
-
200
400
mV
Output Leakage Current
IOH
Vout=24V,B≤BRP
-
1.0
10
μA
Supply Current
ICC
VCC=Vccmax OC output
-
5
-
mA
Output Rise Time
tr
-
0.2
2.0
μS
Output Falling Time
tf
Vcc=12V, RL=820Ω,
CL=20pF
-
0.18
2.0
μS
Nanjing Ouzhuo Technology co., Ltd
Tel:86-25-52312738,86-25-83247886
Page 1
www.ohhall.com
FAX: 86-25-52312738
www.zbling.com
E-mail: [email protected]
OH44E
Unipolar Hall Effect Switch IC
Magnetic Characteristics (Ta= 25°C ) (1mT = 10 Gauss)
Value
Parameter
symbol
Unit
Min
Typ
Max
Operate Point
BOP
-
-
20
mT
Release Point
BRP
3
-
-
mT
Hysteresis
BH
-
6
-
mT
Test Circuit for Reference
Reference:
Pin Descriptions
Descriptions:1.VCC 2. GND 3.Vout
Vcc
Caution:
1)when installing, please minimize mechanical
stress on the IC shell and leads.
2)Welding temperature should be lower than
Vout
RL
CL
RL=820Ω
CL=20 pF
260 ℃, less than 3 seconds.
3)IC is OC output, so a pull-up resistor
connected pin 1 (power) and pin 3 (output) is
necessary.
unit:mm)
Dimension
Dimension(unit:mm)
Nanjing Ouzhuo Technology co., Ltd
Tel:86-25-52312738,86-25-83247886
Page 2
www.ohhall.com
FAX: 86-25-52312738
www.zbling.com
E-mail: [email protected]
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