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SS139_13 参数 Datasheet PDF下载

SS139_13图片预览
型号: SS139_13
PDF下载: 下载PDF文件 查看货源
内容描述: [Unipolar Hall Switch-Low Sensitivity]
分类和应用:
文件页数/大小: 5 页 / 223 K
品牌: SECELECTRONICS [ SEC Electronics Inc. ]
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SS139  
Unipolar Hall Switch-Low Sensitivity  
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 /0.25W resistor for 5V application and a diode for higher supply voltage are recommended. Both  
solutions provide the required reverse voltage protection.  
When a weak power supply is used or when the device is intended to be used in noisy environment, it is recommended  
that figure 13.3 from the Application Information section 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.  
ESD Precautions  
Electronic semiconductor products are sensitive to Electro Static Discharge (ESD).  
Always observe Electro Static Discharge control procedures whenever handling semiconductor products.  
Package Information  
Package LH, 3-Pin SOT-23:  
4
V2.10 May 1, 2012