SS149_1311 [SECELECTRONICS]
Unipolar Hall Switch-Low Sensitivity;型号: | SS149_1311 |
厂家: | SEC Electronics Inc. |
描述: | Unipolar Hall Switch-Low Sensitivity |
文件: | 总6页 (文件大小:209K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
SS149
Unipolar Hall Switch-Low Sensitivity
Packages
Features and Benefits
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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
3 pin SOT23 (suffix SO)
3 pin SIP (suffix UA)
Functional Block Diagram
Application Examples
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Automotive, Consumer and Industrial
Solid-state switch
VDD
Brushless DC motor commutation
Speed detection
Voltage
OUT
Regulator
Angular position detection
Proximity detection
Chopper
Current detector
Hall
Plate
General Description
The SS149 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.
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SS149
Unipolar Hall Switch-Low Sensitivity
Glossary of Terms
MilliTesla (mT), Gauss
RoHS
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
Operating Point (BOP)
driver ON (VOUT = VDSon
)
Magnetic flux density applied on the branded side of the package which turns the
Release Point (BRP)
output
driver OFF (VOUT = high)
Pin Definitions and Descriptions
SOT Pin № SIP Pin №
Name
Type
Function
1
2
3
1
3
2
VDD
Supply
Output
Ground
Supply Voltage pin
Open Drain Output pin
Ground pin
OUT
GND
Absolute Maximum Ratings
Parameter
Symbol
Value
Units
V
Supply Voltage
Supply Current
Output Voltage
Output Current
VDD
IDD
28
50
28
50
mA
V
VOUT
IOUT
TS
mA
°C
Storage Temperature Range
-65 to 170
Operating Temperature Range Symbol
Value
Units
Temperature Suffix “E”
Temperature Suffix “K”
Temperature Suffix “L”
TA
TA
TA
-40 to 85
-40 to 125
-40 to 150
°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.
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SS149
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
Typ
Max Units
Supply Voltage
Supply Current
VDD
IDD
Operating
3.5
1.5
24
5
V
mA
V
B < BRP
2.5
0.4
Output Saturation Voltage VDSon
IOUT = 20mA, B > BOP
B < BRP VOUT = 24V
RL = 1kΩ, CL = 20pF
RL = 1kΩ, CL = 20pF
0.5
10
Output Leakage Current
Output Rise Time
IOFF
tr
0.01
0.25
0.25
µA
µs
Output Fall Time
tf
µs
Magnetic Specifications
DC Operating Parameters VDD = 3.5V to 24V (unless otherwise specified)
Package
Parameter
Symbol
Test Conditions
Min
Typ
Max Units
Operating Point
Release Point
Hysteresis
BOP
90
75
120
80
150
140
G
G
G
G
G
G
BRP
UA
Ta=25°C,Vdd=12V DC
BHYST
BOP
40
Operating Point
Release Point
Hysteresis
-150
-140
-120
-80
40
-90
-75
BRP
SO
Ta=25°C,Vdd=12V DC
BHYST
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.
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SS149
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.
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SS149
Unipolar Hall Switch-Low Sensitivity
Package Information
Package UA, 3-Pin SIP:
2.13
1.87
3° ± 1°
1.00
45° ± 1°
4.0 ± 0.01
1
Sensor Location
0.84(Nom)
6° ± 1°
Active Area Depth:
3° ± 1°
0.44± 0.01
1
2
3
6° ± 1°
3° ± 1°
0.05 ± 0.05
0.39± 0.01
0.38 ± 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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SS149
Unipolar Hall Switch-Low Sensitivity
Package SO, 3-Pin SOT-23:
Notes
Top
1). PINOUT: Pin 1 VDD
Pin 2 Output
3
Pin 3 GND
2). All dimensions are in millimeters;
2.60
3.00
1.50
1.80
1
2
1.70
2.10
Side Vie
End
2.70
3.10
0.10
0.25
1.00
1.30
0.70
0.90
0.20
Min
0.00
0.10
0.35
0.50
Ordering Information
Part No.
Pb-free
YES
Temperature Code
-40°C to 85°C
Package Code
SOT-23
Packing
SS149ESOT
SS149EUA
SS149KSOT
SS149KUA
7-in. reel, 3000 pieces/reel
Bulk, 1000 pieces/bag
7-in. reel, 3000 pieces/reel
Bulk, 1000 pieces/bag
7-in. reel, 3000 pieces/reel
Bulk, 1000 pieces/bag
YES
-40°C to 85°C
TO-92
YES
-40°C to 125°C
-40°C to 125°C
SOT-23
YES
TO-92
SS149LSOT
SS149LUA
YES
YES
-40°C to 150°C
-40°C to 150°C
SOT-23
TO-92
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