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ACS756xCB

The Allegro ACS756 family of current sensor ICs provides

economical and precise solutions forAC or DC current sensing

in industrial, automotive, commercial, and communications

systems.Thedevicepackageallowsforeasyimplementationby

the customer. Typical applications include motor control, load

detection and management, power supplies, and overcurrent

fault protection.

The device consists of a precision, low-offset linear Hall

circuit with a copper conduction path located near the die.

Applied current flowing through this copper conduction path

generates a magnetic field which the Hall IC converts into a

proportionalvoltage.Deviceaccuracyisoptimizedthroughthe

close proximity of the magnetic signal to the Hall transducer.

A precise, proportional voltage is provided by the low-offset,

chopper-stabilized BiCMOS Hall IC, which is programmed

for accuracy at the factory.

increasingcurrentflowsthroughtheprimarycopperconduction

path (from terminal 4 to terminal 5), which is the path used

for current sampling.The internal resistance of this conductive

path is 100 µΩ typical, providing low power 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 signal leads

ACS756xCB-DS, Rev. 3

• Industry-leading noise performance through proprietary

amplifier and filter design techniques

• Small package size, with easy mounting capability

• Monolithic Hall IC for high reliability

• Ultra-low power loss:100 µΩ internal conductor resistance

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

• Nearly zero magnetic hysteresis

Fully Integrated, Hall Effect-Based Linear Current Sensor IC

with 3 kVRMS Voltage Isolation and a Low-Resistance Current Conductor

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PACKAGE:

5-Pin CB Package (suffix PFF)

+5 V

0.1 µF

IP+

IP–

2

GND

4

5

ACS756

3

1

VIOUT

VCC

I

P

Additional leadforms available for qualifying volumes

TÜV America

Certificate Number:

U8V 14 05 54214 028

FEATURES AND BENEFITS

DESCRIPTION

Typical Application

UL Certified File

No.: E316429

December 5, 2016