Current Sensor IC comes in micro sized package.

Press Release Summary:

Housed in 3 x 3 x 0.75 mm QFN package with internal resistance of 0.6 mΩ, Model ACS711 is designed for high and low side sensing applications up to 100 Vdc, with over 30 A continuous current. Factory programming provides for optimized accuracy in IC, with integrated fast response fault output. Model ACS711 is suited for motor and pump control in white goods, short circuit and overpower detection in audio applications, lighting, and general power supply monitoring.

Original Press Release:

Allegro MicroSystems, Inc. Introduces a New, Revolutionary Package Option for Their Existing Current Sensor IC Portfolio

Designed for High and Low Side Sensing Applications

Worcester, MA - Allegro MicroSystems, Inc. introduces a revolutionary new package offering for Allegro’s current sensor IC family of devices. Allegro’s smallest current sensor linear IC, the ACS711, is now housed in a 0.75 mm thick low profile QFN package measuring only 3 mm x 3 mm. This new micro sized device is possibly the smallest fully integrated linear current sensor IC in the world! With only a 0.6 mΩ internal resistance, this package can really take the heat. With proper PCB design, the device can be used for applications with over 30 A continuous current while reducing power consumption by an order of magnitude over existing sense resistor op-amp solutions.

Factory programming provides for high accuracy in this IC with an integrated fast response fault output. Together these techniques deliver the smallest current sensing footprint available for your application without compromising accuracy. It is designed for low-side or high side sensing applications up to 100 VDC. High accuracy is achieved through factory end of line trimming. When combined with our ratiometry feature, our device offers superior accuracy compared to other shunt and op amp solutions on the market today.

Allegro’s new current sensor IC is targeted at the industrial, white goods and automotive markets with end applications to include motor and pump control in white goods, short circuit and overpower detection in audio applications, lighting and general power supply monitoring. 

Please see below for the pricing for 1,000 pieces:

• ACS711EEXLT-15AB-T         $0.43

• ACS711EEXLT-31AB-T         $0.43

• ACS711KEXLT-15AB-T         $0.43

• ACS711KEXLT-31AB-T         $0.43

Allegro MicroSystems, Inc. is a leader in developing, manufacturing and marketing high-performance semiconductors. Allegro's innovative solutions serve high-growth applications within the automotive market, with additional focus on office automation, industrial, and consumer/communications solutions. Allegro is headquartered in Worcester, Massachusetts (USA) with design, applications, and sales support centers located worldwide. Further information about Allegro can be found at

Contact information:

Stephanie Fennelley

Allegro MicroSystems

115 Northeast Cutoff

Worcester, MA 01606

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