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SS732LSOT Arkusz danych(PDF) 6 Page - SEC Electronics Inc.

Numer części SS732LSOT
Szczegółowy opis  Hall Latch - High Sensitivity
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Producent  SECELECTRONICS [SEC Electronics Inc.]
Strona internetowa  http://www.secsemi.com
Logo SECELECTRONICS - SEC Electronics Inc.

SS732LSOT Arkusz danych(HTML) 6 Page - SEC Electronics Inc.

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SS732/SS632
Hall Latch - High Sensitivity
DC Operating Parameters TA = -40 C to 150 C, VDD = 2.5V to 24V (unless otherwise specified)
rameter
Test Conditions(SO)
OUT(SO)
Test Conditions(UA)
OUT(UA)
Pa
So
B
B > BOP
uth pole
< BRP
High
Low
Nort
B > BOP
Low
B < BRP
High
h pole
Outp
ersus magnetic pole
ut behaviour v
pplication Information
s 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 two figures in next page, a 0.1μF capacitor is typical.
A
It i
ed to connect a resistor or a diode in series with the VDD pin. When using a
CC
Us
Therefore, a 100Ω/0.25W resistor for 5V application and a diode for higher supply voltage are recommended. Both solutions
provide
When a
figure 1
The low
ce
supply voltage V
. The diode D1 provides additional reverse voltage protection.
The S732 have been optimized for commutation applications in 5V and 12V brushless D
The follow figure is the typical
application circuit for 3 phase brushless DC motors.
For reverse voltage protection, it is recommend
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 = V
2/R1)
ing a diode, a reverse current cannot flow and the voltage drop is almost constant (≈0.7V).
the required reverse voltage protection.
weak power supply is used or when the device is intended to be used in noisy environment, it is recommended that
3.3 from the Application Information section is used.
-pass filter formed by R1 and C1 and the Zener diode Z1 bypass the disturbances or voltage spikes occurring on the devi
DD
                                      
 
6
V2.00
May.1,
                       
2012
C motors.
S732
R2
C2
VDD
GND
OUT
C1
S732
R1:100
Automotive and Severe Environment
Protection Circuit
Typical Three-Wire Application Circuit
R2
C2
VDD
GND
C1
OUT
Z1
D1


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