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SS1352KSOT Datasheet(PDF) 5 Page - SEC Electronics Inc. |
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SS1352KSOT Datasheet(HTML) 5 Page - SEC Electronics Inc. |
5 / 8 page SS1352 Unipolar Hall Switch 5 V3.10 Nov 1, 2013 Output Behavior versus Magnetic Pole DC Operating Parameters TA = -40°C to 150°C, VDD = 3.5 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 South pole magnetic field applied to the marked face. Application Information It is strongly recommended that an external bypass capacitor be connected (in close proximity to the Hall sensor) between the supply(VDD Pin) and ground(GND Pin) of the device to reduce both external noise and noise generated by the chopper stabilization technique. As is shown in the following figure, a 0.1μF capacitor is typical. For reverse voltage protection, it is recommended to connect a resistor or a diode in series with the V DD pin. When using a resistor, three points are important: - the resistor has to limit the reverse current to 50mA maximum (V CC / R1 ≤ 50mA) - the resulting device supply voltage V DD has to be higher than VDD min (VDD = VCC – R1*IDD) - the resistor has to withstand the power dissipated in reverse voltage condition (P D = VCC 2 /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. 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 SS1352 |
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