This part is a kind of semiconductor called ACS756SCA-100B-PFF-T.

Function of this product has Fully Integrated Hall Effect-Based Linear Current Sensor IC.

Manufacturers : Allegro Micro Systems

Image and pinout :

Some of the text within the PDF file :

ACS756 Fully Integrated, Hall Effect-Based Linear Current Sensor IC with 3 kVRMS Voltage Isolation and a Low-Resistance Current Conductor Features and Benefits ▪ Industry-leading noise performance through proprietary amplifier and filter design techniques ▪ Total output error 0.8% at TA = 25°C ▪ Small package size, with easy mounting capability ▪ Monolithic Hall IC for high reliability ▪ Ultra-low power loss: 130 μΩ internal conductor resistance ▪ 3 kVRMS minimum isolation voltage from pins 1-3 to pins 4-5 ▪ 3.0 to 5.0 V, single supply operation ▪ 3 μs output rise time in response to step input current ▪ 20 or 40 mV/A output sensitivity ▪ Output voltage proportional to AC or DC currents ▪ Factory-trimmed for accuracy ▪ Extremely stable output offset voltage ▪ [ ... ]

ACS756SCA-100B-PFF-T PDF Datasheet Download