SS3144

SS3144
Unipolar Hall-Effect Digital Switch
Features and Benefits
Application Examples
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4.5V to 24V Operation
-40°C to 150°C Superior temperature operation
Bipolar technology
Open-collector 25 mA output
Reverse battery protection
Small Size SOT23 3L or SIP 3L
Solid-state reliability
Resistant to physical stress
Activate with small, commercially available
Permanent magnets
Automotive, Consumer and Industrial
Solid-state switch
Brushless DC motor commutation
Speed detection
Linear position detection
Angular position detection
Proximity detection
3 pin SOT23 (suffix SO)
3 pin SIP (suffix UA)
Functional Block Diagram
VDD
Voltage
Regulatr
OUT
Chopper
Hall
Plate
GND
SIP Package
Pin 1 – VDD
Pin 2 – GND
Pin 3 – OUT
SOT Package
Pin 1 – VDD
Pin 2 – OUT
Pin 3 – GND
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V3.10 Nov 1, 2013
SS3144
Unipolar Hall-Effect Digital Switch
General Descriptions
supply voltage changes. The unipolar switching characteristic makes these devices ideal for use with a simple bar or rod magnet.
The SS3144 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 25 mA. With suitable output pull up, they
can be used with bipolar or CMOS logic circuits.
Thanks to its wide operating voltage range and extended choice of temperature range, it is quite suitable for
use in automotive, industrial and consumer applications.
The device is delivered in a Small Outline Transistor
(SOT) or in a Plastic Single In Line (SIP 3L flat). Both
3-lead packages are RoHS compliant.
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 both temperature and
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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V3.10 Nov 1, 2013
SS3144
Unipolar Hall-Effect Digital Switch
Pin Definitions and Descriptions
SOT Pin № SIP Pin №
Name
Type
Function
1
1
VDD
Supply
Supply Voltage pin
2
3
OUT
Output
Open Drain Output pin
3
2
GND
Ground
Ground pin
Absolute Maximum Ratings
Parameter
Symbol
Value
Units
Supply Voltage
VDD
28
V
Supply Current
IDD
50
mA
Output Voltage
VOUT
28
V
Output Current
IOUT
50
mA
Storage Temperature Range
TS
-65 to 170
°C
Symbol
Value
Temperature Suffix “E”
TA
-40 to 85
°C
Temperature Suffix “K”
TA
-40 to 125
°C
Temperature Suffix “L”
TA
-40 to 150
°C
Operating Temperature Range
Units
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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V3.10 Nov 1, 2013
SS3144
Unipolar Hall-Effect Digital Switch
General Electrical Specifications
DC Operating Parameters TA = 25°C, VDD= 4.5V to 24V (unless otherwise specified)
Parameter
Symbol Test Conditions
Supply Voltage
VDD
Operating
Supply Current
IDD
B < BRP
VDSon
Output Saturation Voltage
IOFF
Output Leakage Current
Min
Typ
4.5
Max
Units
24
V
5
7
mA
IOUT = 20mA, B > BOP
0.3
0.5
V
B < BRP VOUT = 24V
0.1
10
µA
4
Output Rise Time
tr
RL = 820Ω, CL = 20pF
0.04
2.0
µs
Output Fall Time
tf
RL =820Ω, CL = 20pF
0.18
2.0
µs
Magnetic Specifications
DC Operating Parameters VDD = 4.5 to 24V (unless otherwise specified)
Package
UA
SO
Parameter
Symbol
Operating Point
BOP
Release Point
BRP
Hysteresis
BHYST
Operating Point
BOP
Release Point
BRP
Hysteresis
BHYST
Test Conditions
Ta=25°C,Vdd=12V DC
Min
Typ
Max
Units
150
170
190
G
100
125
160
G
45
Ta=25°C,Vdd=12V DC
G
-190
-170
-150
G
-160
-125
-100
G
45
G
Output Behavior versus Magnetic Pole
DC Operating Parameters TA = -40°C to 150°C, VDD = 4.5 to 24V (unless otherwise specified)
Test Conditions (UA)
Test Conditions (SO)
OUT
B < BRP
B > BRP
High
B > BOP
B < BOP
Low
The SOT-23 device is reversed from the UA package. The SOT-23 output transistor will be turned on(drops low) in the presence of a
sufficiently strong North pole magnetic field applied to the marked face.
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V3.10 Nov 1, 2013
SS3144
Unipolar Hall-Effect Digital Switch
Application Information
Package Information
2.13
1.87
0.75 ± 0.05
1.52 ± 0.1
Package UA, 3-Pin SIP:
3° ± 1°
1.00
1.20
45° ± 1°
4.0 ± 0.01
1
2
3
3.0 ± 0.01
Sensor Location
Active Area Depth:
0.84(Nom)
3° ± 1°
6° ± 1°
3° ± 1°
6° ± 1°
1
2
0.05 ± 0.05
3
1.6.± 0.1
0.44± 0.01
0.38 ± 0.01
14 .5 ± 1
0.39± 0.01
Notes:
1). Controlling dimension : mm ;
2). Leads must be free of flash and plating voids ;
3). Do not bend leads within 1 mm of lead to package
interface ;
4). PINOUT: Pin 1 VDD
Pin 2 GND
Pin 3 Output
1.27
2.54
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V3.10 Nov 1, 2013
SS3144
Unipolar Hall-Effect Digital Switch
Package SO, 3-Pin SOT-23：
Notes
1). PINOUT:
Top
3
2.60
1.50 3.00
1.80
1
Side Vie
Pin 1 VDD
Pin 2 Output
Pin 3 GND
2). All dimensions are in millimeters;
2
1.70
2.10
End
2.70
3.10
1.00
1.30
0.70
0.90
0.35
0.50
0.10
0.25
0.20
Min
0.00
0.10
Ordering Information
Part No.
Pb-free
Temperature Code
Package Code
Packing
SS3144ESOT
YES
-40°C to 85°C
SOT-23
7-in. reel, 3000 pieces/reel
SS3144EUA
YES
-40°C to 85°C
TO-92
Bulk, 1000 pieces/bag
SS3144KSOT
YES
-40°C to 125°C
SOT-23
7-in. reel, 3000 pieces/reel
SS3144KUA
YES
-40°C to 125°C
TO-92
Bulk, 1000 pieces/bag
SS3144LSOT
YES
-40°C to 150°C
SOT-23
7-in. reel, 3000 pieces/reel
SS3144LUA
YES
-40°C to 150°C
TO-92
Bulk, 1000 pieces/bag
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V3.10 Nov 1, 2013