SS1348

SS1348
Unipolar Hall Switch-Low Sensitivity
Packages
Features and Benefits
3 pin SOT23 (suffix SO)
–
–
–
–
–
–
–
–
3 pin SIP (suffix UA)
Functional Block Diagram
Application Examples
VDD
Voltage
Regulator
3.5V to 24V Operation
-40°C to 150°C Superior temperature operation
CMOS technology
Low current consumption
Chopper-stabilized amplifier stage
Open drain output
Low sensitivity
Small Size SOT23 3L or SIP 3L
both RoHS compliant packages
OUT
Chopper
–
–
–
–
–
–
–
Automotive, Consumer and Industrial
Solid-state switch
Brushless DC motor commutation
Speed detection
Angular position detection
Proximity detection
Current detector
General Description
Hall
Plate
The SS1348 is a unipolar Hall-effect sensor IC fabricated from CMOS technology. The device integrates a
voltage regulator, Hall sensor with dynamic offset cancellation system, small signal amplifier, Schmitt trigger
and an open-drain output driver. With suitable output
pull up, they can be used with bipolar or CMOS logic
circuits.
GND
SIP Package
Pin 1 – VDD
Pin 2 – GND
Pin 3 – OUT
SOT Package
Pin 1 – VDD
Pin 2 – OUT
Pin 3 – GND
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 supply voltage changes. The unipolar switching characteristic makes these devices ideal for use with a simple bar or rod magnet.
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) and in a Plastic Single In Line ( SIP 3L flat). Both
3-lead packages are RoHS compliant.
1
V3.10 Nov 1, 2013
SS1348
Unipolar Hall Switch-Low Sensitivity
Glossary of Terms
MilliTesla (mT), Gauss
RoHS
Operating Point (BOP)
Release Point (BRP)
Units of magnetic flux density: 1mT = 10 Gauss
Restriction of Hazardous Substances
Magnetic flux density applied on the branded side of the package which turns the
output
driver ON (VOUT = VDSon)
Magnetic flux density applied on the branded side of the package which turns the
output
driver OFF (VOUT = high)
Pin Definitions and Descriptions
SOT Pin № SIP Pin №
Name
Type
Function
1
2
3
VDD
OUT
GND
Supply
Output
Ground
Supply Voltage pin
Open Drain Output pin
Ground pin
1
3
2
Absolute Maximum Ratings
Parameter
Supply Voltage
Supply Current
Output Voltage
Output Current
Storage Temperature Range
Operating Temperature Range
Temperature Suffix “E”
Temperature Suffix “K”
Temperature Suffix “L”
Symbol
VDD
IDD
VOUT
IOUT
TS
Symbol
TA
TA
TA
Value
28
50
28
50
-65 to 170
Value
-40 to 85
-40 to 125
-40 to 150
Units
V
mA
V
mA
°C
Units
°C
°C
°C
Exceeding the absolute maximum ratings may cause permanent damage. Exposure to absolute-maximum-rated conditions for extended
periods may affect device reliability.
2
V3.10 Nov 1, 2013
SS1348
Unipolar Hall Switch-Low Sensitivity
General Electrical Specifications
DC Operating Parameters TA = 25°C, VDD= 3.5V to 24V (unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Supply Voltage
Supply Current
Output Saturation Voltage
Output Leakage Current
Output Rise Time
Output Fall Time
VDD
IDD
VDSon
IOFF
tr
tf
Operating
B < BRP
IOUT = 20mA, B > BOP
B < BRP VOUT = 24V
RL = 1kΩ, CL = 20pF
RL = 1kΩ, CL = 20pF
3.5
1.5
Typ
2.5
0.4
0.01
0.25
0.25
Max
Units
24
5
0.5
10
V
mA
V
µA
µs
µs
Magnetic Specifications
DC Operating Parameters VDD = 3.5V to 24V (unless otherwise specified)
Package
UA
SO
Parameter
Operating Point
Release Point
Hysteresis
Operating Point
Release Point
Hysteresis
Symbol
BOP
BRP
BHYST
BOP
BRP
BHYST
Test Conditions
Min
Typ
Max
Units
Ta=25°C,Vdd=12V DC
90
75
150
140
Ta=25°C,Vdd=12V DC
-150
-140
120
80
40
-120
-80
40
G
G
G
G
G
G
-90
-75
Output Behavior versus Magnetic Pole
DC Operating Parameters TA = -40°C to 150°C, VDD = 3.5V to 24V (unless otherwise specified)
Test Conditions (UA)
Test Conditions (SO)
OUT
B < BRP
B > BOP
B > BRP
B < BOP
High
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.
3
V3.10 Nov 1, 2013
SS1348
Unipolar Hall Switch-Low Sensitivity
Application Information
Typical Three-Wire Application Circuit
Automotive and Harsh, Noisy Environments Three-Wire Circuit
Application Comments
For proper operation, a 100nF bypass capacitor should be placed as close as possible to the device between the VDD
and ground pin.
For reverse voltage protection, it is recommended to connect a resistor or a diode in series with the VDD pin.
When using a resistor, three points are important:
- the resistor has to limit the reverse current to 50mA maximum (VCC / R1 ≤ 50mA)
- the resulting device supply voltage VDD has to be higher than VDD min (VDD = VCC – R1.IDD)
- the resistor has to withstand the power dissipated in reverse voltage condition (PD = VCC2/ R1)
When using a diode, a reverse current cannot flow and the voltage drop is almost constant (≈ 0.7V).
Therefore, a 100 Ω /0.25W resistor for 5V application and a diode for higher supply voltage are recommended.
When a weak power supply is used or when the device is intended to be used in noisy environment, it is recommended the second figure above is used.
The low-pass filter formed by R1 and C1 and the Zener diode Z1 bypass the disturbances or voltage spikes occurring
on the device supply voltage VDD. The diode D1 provides additional reverse voltage protection.
Both solutions provide the required reverse voltage protection.
ESD Precautions
Electronic semiconductor products are sensitive to Electro Static Discharge (ESD).
Always observe Electro Static Discharge control procedures whenever handling semiconductor products.
4
V3.10 Nov 1, 2013
SS1348
Unipolar Hall Switch-Low Sensitivity
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
5
V3.10 Nov 1, 2013
SS1348
Unipolar Hall Switch-Low Sensitivity
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
0.10
0.25
1.00
1.30
0.70
0.90
0.35
0.50
0.20
Min
0.00
0.10
Ordering Information
Part No.
Pb-free
Temperature Code
Package Code
Packing
SS1348ESOT
YES
-40°C to 85°C
SOT-23
7-in. reel, 3000 pieces/reel
SS1348EUA
YES
-40°C to 85°C
TO-92
Bulk, 1000 pieces/bag
SS1348KSOT
YES
-40°C to 125°C
SOT-23
7-in. reel, 3000 pieces/reel
SS1348KUA
YES
-40°C to 125°C
TO-92
Bulk, 1000 pieces/bag
SS1348LSOT
YES
-40°C to 150°C
SOT-23
7-in. reel, 3000 pieces/reel
SS1348LUA
YES
-40°C to 150°C
TO-92
Bulk, 1000 pieces/bag
6
V3.10 Nov 1, 2013