ACS720KLATR-35AB-T

ACS720KLATR-35AB-T is a high accuracy, dual fault, galvanically isolated, hall-effect-based current sensor IC with multiple programmable fault levels intended for industrial and consumer applications with a focus on motor control and power inverter stage applications. The ACS720 works off of a single 5 V supply while maintaining an output voltage swing from 0 to 3 V, with a stable zero current output of 1.5V. This allows the device to operate off of a 5V supply while having an output which is compatible with typical 3.3V ADCs found on many MCUs. Furthermore, the ACS720’s high PSRR rejects the noise often found on the supplies in the power section of the PCB or system, maintaining high accuracy in noisy environments. This device has dual fault functions that are user-configurable. Fast and slow fault output allow for short-circuit and overcurrent fault detection. A user-created resistor divider from the power supply of the device is used to set the fault level.

• Differential current sensing cancels common mode fields, simplifying PCB layout
• Two user-settable faults for fast short-circuit protection and slower overcurrent detection
• High PSRR for noisy environments, filter resistance is 1.7Kohm typical at (TA = 25°C)
• Output voltage proportional to AC or DC current, supply voltage is 5V typical
• Factory-trimmed sensitivity and quiescent output voltage for improved accuracy
• 3600Vrms dielectric strength certified under UL60950-1
• Sensing range is ±35A, sensitivity is 38.5mV/A typical
• Supply current is 13mA typical at (VCC = 5.0V, output open)
• Internal bandwidth is 1MHz typical at (small signal -3dB; CL = 1nF)
• Operating temperature range from -40°C to 125°C, 16-pin SOICW package