SC4702 Hall Effect Isolated Current Sensor
●SC4702 provides users with a high-precision current detection single chip scheme, which can detect DC or AC current. Because of its low cost, SC4702 can be widely used in household appliances and small electric vehicles. Its typical applications include: motor current detection, system power supply monitoring and key device current protection.
●SC4702 includes linear Hall sensing circuit, temperature compensation circuit, etc. the detected current flows through the chip copper conductor and completes the current detection function by detecting the electromagnetic field generated by the measured current. Due to the use of magnetic field detection, SC4702 can achieve the highest isolation performance of 420Vpk (ul60950-1 ed.2). At the same time, because the detected current does not flow through any semiconductor device, its current path impedance is less than 1.1m Ω, which greatly reduces the power loss in the process of current detection.
●The output of the voltage signal output terminal (VOUT) of the SC4702 changes with the current flowing through its current input / output terminal. When the current is zero, the output voltage value is equal to half of the chip supply voltage. The effective current detection bandwidth of SC4702 is adjustable up to 120kHz For applications requiring high-speed overcurrent protection, the SC4702 provides high-speed response with a delay of no more than 3.5 microseconds.
●Due to the use of advanced linear Hall device sensing circuit and sensing algorithm, SC4702 can effectively attenuate the interference of environmental magnetic field, so as to greatly improve the detection accuracy of conductor current. The magnetic interference signal intensity caused by the magnetic field caused by the magnetic source more than 20mm from the center of the chip can be attenuated by more than 60dB.
●SC4702 adopts SOIC8 package, which effectively reduces the area occupied by the device in application. At the same time, due to the effective temperature and compensation function, the current detection accuracy can be maintained within ± 3% within the working temperature range of - 40 °C ~ 125 °C.
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SC4702 、 SC4702SD05B 、 SC4702SD10U 、 SC4702SD10B 、 SC4702SD20U 、 SC4702SD20B 、 SC4702SD30U 、 SC4702SD30B |
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Isolated Current Sensor 、 Hall Effect Isolated Current Sensor |
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[ White Goods ][ Small Motor Control ][ Mobile Fast Charge Device ] |
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Datasheet |
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Please see the document for details |
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SOIC8 |
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English Chinese Chinese and English Japanese |
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2022/9/19 |
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Rev. 1.1 |
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1.2 MB |
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