SS143

SS143
Unipolar Hall-Effect Digital Switch
Features and Benefits
Application Examples
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3.8V to 24V Operation
-40°C to 150°C Superior temperature operation
Bipolar technology
Open-collector 50 mA output
Reverse battery protection
Small Size SOT89 3L
Solid-state reliability
Resistant to 60V supply voltage
Sensitivity of temperature compensation
circuitry
Automotive, Consumer and Industrial
Solid-state switch
Brushless DC motor commutation
Speed detection
Linear position detection
Angular position detection
Proximity detection
3 pin SOT89 (suffix SP)
Functional Block Diagram
VDD
Voltage
Regulator
Output
Amp
Hall Plate
GND
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V3.10 Nov 1, 2013
SS143
Unipolar Hall-Effect Digital Switch
General Description
both temperature and supply voltage changes.
Internal compensation characteristic makes the
sensitivity increase slightly with temperature
increasing, so that this IC is Particularly suitable to
be used with the commonly low-cost magnets. If a
magnetic flux density larger than threshold Bop,
Output is turned on (low). When a magnetic flux
density reversal falls below Brp, Output will be
turned off (high).
Thanks to its wide operating voltage range,
extended choice of temperature range and high
reliability, it is quite suitable for use in automotive,
industrial and consumer applications.
The SS143 is a unipolar Hall-effect sensor IC
fabricated from bipolar technology. The device
integrates a voltage regulator, reverse battery
protection diode, Hall sensor with dynamic offset
cancellation system, temperature compensation
circuitry, small signal amplifier, Schmitt trigger
and an open-collector output to sink up to 50 mA.
With suitable output pull up, they can be used with
bipolar or CMOS logic circuits.
These Hall-effect switches are monolithic integrated circuits with tighter magnetic specifications,
designed to operate continuously over extended
temperatures to +150°C,and are more stable with
Glossary of Terms
MilliTesla (mT), Gauss Units of magnetic flux density: 1mT = 10 Gauss
RoHS
Restriction of Hazardous Substances
Operating Point (BOP) Magnetic flux density applied on the branded side of the package which turns the output
driver ON (VOUT = VDSon)
Release Point (BRP)
Magnetic flux density applied on the branded side of the package which turns the output
driver OFF (VOUT = high)
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SS143
Unipolar Hall-Effect Digital Switch
Pin Definitions and Descriptions
SOT Pin №
Name
Type
1
VDD
Supply
Supply Voltage pin
2
GND
Ground
Ground pin
3
OUT
Output
Open Collector Output pin
Function
Absolute Maximum Ratings
Symbol
Parameter
Value
Units
Supply Voltage
VDD
60
V
Reverse Voltage
VDD
-24
V
Output Voltage
VOUT
30
V
Output Current
IOUT
50
mA
Magnetic Flux Density
B
No limit
Operating Temperature Range
TA
-40 to +150
°C
Storage Temperature Range
TS
-65 to 170
°C
Maximum Junction Temperature
TJ
+150
°C
Lead Temperature(Solding,
TL
+250
°C
PD
450
mW
Value
Units
5 sec)
Package Power Dissipation
Operating Temperature Range
Symbol
Temperature Suffix “E”
TA
-40 to 85
°C
Temperature Suffix “K”
TA
-40 to 125
°C
Temperature Suffix “L”
TA
-40 to 150
°C
Exceeding the absolute maximum ratings may cause permanent damage. Exposure to absolute-maximum- rated conditions for
extended periods may affect device reliability
.
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SS143
Unipolar Hall-Effect Digital Switch
General Electrical Specifications
DC Operating Parameters TA = 25°C, VDD= 3.8V to 24V (unless otherwise specified)
Parameter
Supply Voltage
Supply Current
Output Saturation Voltage
Output Current
Output Leakage Current
Symbol
Test Conditions
Min
VDD
IDD
VDSon
ION
IOFF
Operating
VDD=12V
IOUT = 20mA, B > BOP
B > BOP
B < BRP
VCC=12V, RL = 1.1KΩ, CL =
20pF
VCC=12V, RL = 1.1KΩ, C L =
20pF
3.8
Output Rise Time
tr
Output Fall Time
tf
Typ
Max
Units
0.1
24
10
0.6
10
10
V
mA
V
mA
µA
0.2
1.5
µs
0.5
1.0
µs
5
0.45
Magnetic Specifications
Package
SP
Parameter
Operating Point
Release Point
Hysteresis
Symbol
BOP
BRP
BHYST
Test Conditions
Min
Ta=25°C,Vdd=12V DC
75
25
Typ
50
Max
Units
120
80
G
G
G
Output Behavior versus Magnetic Pole
DC Operating Parameters TA = -40°C to 150°C, VDD = 3.8V to 24V (unless otherwise specified)
Test Conditions (SP)
OUT
B < BRP
B > BOP
High
Low
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SS143
Unipolar Hall-Effect Digital Switch
Performance Characteristics
70
Magnetic Switch Range versus Temperature
Bop
60
50
Brp
40
30
Bhys
20
10
0
-40
25
85
125
Temperature(℃)
Magnetic Switch Range versus Temperature
140
Flux Density（Gauss）
Flux Density（Gauss）
80
150
120
Bop
100
Brp
80
60
Bhys
40
20
0
-40
25
85
125
Temperature(℃)
150
SS143
Application Information
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V3.10 Nov 1, 2013
SS143
Unipolar Hall-Effect Digital Switch
Package SP, 3-Pin SOT-89：
Ordering Information
Part No.
Pb-free
Temperature Code
Package Code
Packing
SS143ESPT
YES
-40°C to 85°C
SOT-89
7-in. reel, 3000 pieces/reel
SS143KSPT
YES
-40°C to 125°C
SOT-89
7-in. reel, 3000 pieces/reel
SS143LSPT
YES
-40°C to 150°C
SOT-89
7-in. reel, 3000 pieces/reel
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