TSH282
Sensitivity Unipolar Hall Effect Switch
TO-92S
Pin Definition:
1. V
CC
2. GND
3. Output
SOT-23
Pin Definition:
1. V
CC
2. Output
3. GND
Description
TSH282 is an unipolar Hall effect sensor IC. It incorporates advanced chopper stabilization technology to provide
accurate and stable magnetic switch points. The design, specifications and performance have been optimized for
applications of solid state switches. The output transistor will be switched on (B
OP
) in the presence of a sufficiently
strong South pole magnetic field facing the marked side of the package. Similarly, the output will be switched off
(B
RP
) in the presence of a weaker South field and remain off with “0” field.
Features
●
●
●
●
●
●
CMOS Hall IC Technology
Solid-State Reliability
Chopper stabilized amplifier stage
Unipolar, output switches with absolute value of
South pole from magnet
Operation down to 3.0V
High Sensitivity for direct reed switch replacement
applications
Ordering Information
Part No.
TSH282CT B0G
TSH282CX RFG
Package
TO-92S
SOT-23
Packing
1Kpcs / Bulk Bag
3Kpcs / 7” Reel
Note:
“G” denote for Halogen Free Product
Application
●
●
●
●
●
Solid state switch
Limit switch, Current limit
Interrupter
Current sensing
Magnet proximity sensor for reed switch
replacement
Absolute Maximum Rating
(Ta = 25
o
C unless otherwise noted)
Characteristics
Supply voltage
Output Voltage
Reverse voltage
Magnetic flux density
Output current
Operating Temperature Range
Limit
V
CC
V
OUT
V
CC/OUT
I
OUT
T
OPR
Value
27
27
-0.3
Unlimited
50
Unit
V
V
V
Gauss
mA
o
C
-40 to +85
o
-55 to +150
Storage temperature range
T
STG
C
o
150
Maximum Junction Temp
T
J
C
206
TO-92S
o
Thermal Resistance - Junction to Ambient
θ
JA
C/W
543
SOT-23
148
TO-92S
o
Thermal Resistance - Junction to Case
θ
JC
C/W
410
SOT-23
606
TO-92S
Package Power Dissipation
P
D
mW
230
SOT-23
Note:
Exceeding the absolute maximum ratings may cause permanent damage. Exposure to absolute maximum-
rated conditions for extended periods may affect device reliability.
1/8
Version: B13
TSH282
Sensitivity Unipolar Hall Effect Switch
Block Diagram
Note:
Static sensitive device; please observe ESD precautions. Reverse VDD protection is not included. For
reverse voltage protection, a 100Ω resistor in series with VDD is recommended.
Typical Application Circuit
D1：1N4148 or 100Ω
C1：1000pF
C2：15pF
R1：10KΩ
Electrical Specifications
(
DC Operating Parameters：T
A
=+25
o
C,V
CC
=12V)
Parameters
Supply Voltage
Supply Current
Output Low Voltage
Output Leakage Current
Output Rise Time
Output Fall Time
Operating
B<B
OP
I
OUT
= 20mA, B>B
OP
I
OFF
B<B
RP
, V
OUT
= 20V
R
L
=1kΩ, C
L
=20pF
R
L
=1kΩ; C
L
=20pF
Test Conditions
Min
3.0
--
--
--
--
--
Typ
--
2.5
--
--
0.04
0.18
Max
24
5.0
500
10
--
--
Units
V
mA
mV
uA
uS
uS
2/8
Version: B13
TSH282
Sensitivity Unipolar Hall Effect Switch
Magnetic Specifications
DC Operating Parameters： TA=+25 C, V
DD
=12V
o
Parameter
Operate Point
Release Point
Hysteresis
Symbol
B
OP
B
RP
B
HYS
Test condition
Min
45
25
--
Typ
--
--
20
Max
100
70
--
Unit
Gauss
Gauss
Gauss
Note:
1G (Gauss) = 0.1mT (millitesta)
Output Behavior versus Magnetic Pole
DC Operating Parameters Ta = -40 to 125 C, V
DD
= 3.0 ~ 24V
Parameter
Test condition
South pole
Null or weak magnetic field
North pole
B>Bop[(100)~(45)]
-Brp ~ +Brp
B< -Bop(-25~-70)
o
OUT(TO-92S)
Low
Open(Pull-up Voltage)
Open(Pull-up Voltage)
OUT(SOT-23)
Open(Pull-up Voltage)
Open(Pull-up Voltage)
Low
SOT-23 (North Pole)
TO-92S (South Pole)
OUT=Low
(VDSon)
OUT=Low
(VDSon)
3/8
Version: B13
TSH282
Sensitivity Unipolar Hall Effect Switch
Characteristic Performance
Figure 1. Supply Voltage vs. Flux Density
Figure 2. Temperature vs. Flux Density
Figure 3. Supply Current vs. Temperature
Figure 4. Supply Current vs. Supply Voltage
Figure 5. Output Saturation Voltage vs.
Supply Voltage
Figure 6. Output Saturation Voltage vs.
Temperature
4/8
Version: B13
TSH282
Sensitivity Unipolar Hall Effect Switch
Characteristic Performance
Figure 7. Output Leakage Current vs.
Supply Voltage
Figure 8. Power Dissipation vs. Temperature
5/8
Version: B13
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