ACS781 datasheet(2/22 Pages) ALLEGRO

2 / 22 page

High-Precision Linear Hall-Effect-Based

Current Sensor IC With 200 µΩ Current Conductor

ACS781xLR

Allegro MicroSystems, LLC

115 Northeast Cutoff

Worcester, Massachusetts 01615-0036 U.S.A.

1.508.853.5000; www.allegromicro.com

path(fromterminal5toterminal6),whichisthepathusedfor

current sampling. The internal resistance of this conductive path is

200µΩtypical,providinglowpowerloss.

The thickness of the copper conductor allows survival of the device

at high overcurrent conditions. The terminals of the conductive path

are electrically isolated from the signal leads (pins 1 through 4, and

DESCRIPTION (CONTINUED)

SELECTION GUIDE

Part Number

Sensed Current

Direction

Primary Sampled

Current, IP

(A)

Sensitivity

Sens (Typ.)

(mV/A)

TOP

(°C)

Packing1

ACS781LLRTR-050B-T

Bidirectional

±50

26.4

–40 to 150

Tape and reel

ACS781LLRTR-050U-T

Unidirectional

0 to 50

39.6

ACS781LLRTR-100B-T

Bidirectional

±100

13.2

ACS781LLRTR-100U-T

Unidirectional

0 to 100

26.4

ACS781KLRTR-150B-T

Bidirectional

±150 transient

±100 continuous

8.8

–40 to 125

ACS781KLRTR-150U-T

Unidirectional

0 to 150 transient

0 to 100 continuous

17.6

Contact Allegro for additional packing options.

7), and allows the device to operate safely with voltages up to 100 V

peak on the primary conductor.

The device is fully calibrated prior to shipment from the factory.

The ACS781xLR family is lead (Pb) free. All leads are plated with

100% matte tin, and there is no Pb inside the package. The heavy

gauge leadframe is made of oxygen-free copper.

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