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PDF SS1331 Data sheet ( Hoja de datos )
| Número de pieza | SS1331 | |
| Descripción | Unipolar Hall Switch-Low Sensitivity | |
| Fabricantes | SEC | |
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SS1331
Unipolar Hall Switch-Low Sensitivity
Features and Benefits
– 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
Application Examples
– Automotive, Consumer and Industrial
– Solid-state switch
– Brushless DC motor commutation
– Speed detection
– Angular position detection
– Proximity detection
– Current detector
3 pin SOT23 (suffix SO)
3 pin SIP (suffix UA)
Functional Block Diagram
VDD
Voltage
Regulator
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
OUT
1 V3.10 Nov 1, 2013
1 page  
SS1331
Unipolar Hall Switch-Low Sensitivity
Application Information
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 100Ω/0.25W resistor for 5V application and a diode for higher supply voltage are recommended.
Typical Three-Wire Application Circuit
When a weak power supply is used or when the device is intended to be used in noisy environment, it is recom-
mended that figure followed is used.
The low-pass filter formed by R1 and C1 and the Zener diode Z1 bypass the disturbances or voltage spikes occur-
ring on the device supply voltage VDD. The diode D1 provides additional reverse voltage protection.
Both solutions provide the required reverse voltage protection.
Automotive and Harsh, Noisy Environments Three-Wire Circuit
ESD Precautions
Electronic semiconductor products are sensitive to Electro Static Discharge (ESD).
Always observe Electro Static Discharge control procedures whenever handling semiconductor products.
5 V3.10 Nov 1, 2013
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet SS1331.PDF ] | |
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