Fully Integrated, Hall Effect-Based Linear Current Sensor with

2.1 kVRMS Voltage Isolation and a Low-Resistance Current Conductor

ACS712

2

Allegro MicroSystems, Inc.

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000

www.allegromicro.com

Selection Guide

Part Number

Packing*

(°C)

(A)

Sensitivity, Sens

(Typ) (mV/A)

ACS712ELCTR-05B-T

Tape and reel, 3000 pieces/reel

–40 to 85

±5

185

ACS712ELCTR-20A-T

Tape and reel, 3000 pieces/reel

–40 to 85

±20

100

ACS712ELCTR-30A-T

Tape and reel, 3000 pieces/reel

–40 to 85

±30

66

*Contact Allegro for additional packing options.

loss. The thickness of the copper conductor allows survival of

the device at up to 5× overcurrent conditions. The terminals of

the conductive path are electrically isolated from the sensor leads

(pins 5 through 8). This allows the ACS712 current sensor to be

used in applications requiring electrical isolation without the use

of opto-isolators or other costly isolation techniques.

TheACS712 is provided in a small, surface mount SOIC8 package.

The leadframe is plated with 100% matte tin, which is compatible

withstandardlead(Pb)freeprintedcircuitboardassemblyprocesses.

Internally,thedeviceisPb-free,exceptforflip-chiphigh-temperature

Pb-based solder balls, currently exempt from RoHS. The device is

fully calibrated prior to shipment from the factory.

Description (continued)

Absolute Maximum Ratings

Characteristic

Symbol

Notes

Rating

Units

Supply Voltage

8V

Reverse Supply Voltage

–0.1

V

Output Voltage

8V

Reverse Output Voltage

–0.1

V

Output Current Source

3mA

Output Current Sink

10

mA

Overcurrent Transient Tolerance

100 total pulses, 250 ms duration each, applied

at a rate of 1 pulse every 100 seconds.

60

A

Maximum Transient Sensed Current

60

A

Nominal Operating Ambient Temperature

Range E

–40 to 85

ºC

Maximum Junction

165

ºC

Storage Temperature

–65 to 170

ºC

TÜV America

Certificate Number:

U8V 06 05 54214 010

Parameter

Specification

Fire and Electric Shock

CAN/CSA-C22.2 No. 60950-1-03

UL 60950-1:2003

EN 60950-1:2001