ACS759LCB-100B-PFF-T【PDF 1/19 页】SENSOR CURRENT

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ACS759xCB

Thermally Enhanced, Fully Integrated, Hall Effect-Based Linear Current Sensor IC

With 100 μΩ Current Conductor and Optimized Performance at 3.3 V

Features and Benefits

? Industry-leading noise performance through proprietary

amplifier and filter design techniques

? Integrated shield greatly reduces capacitive coupling from

current conductor to die due to high dV/dt signals, and

prevents offset drift in high-side, high voltage applications

? Total output error improvement through gain and offset

trim over temperature

? Small package size, with easy mounting capability

? Monolithic Hall IC for high reliability

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

? Galvanic isolation allows use in economical, high-side

current sensing in high voltage systems

? 3.0 to 3.6 V, single supply operation

Continued on the next page…

Description

The Allegro ? ACS759 family of current sensor ICs provides

economical and precise solutions for AC or DC current sensing.

Typical applications include motor control, load detection and

management, power supply and DC-to-DC converter control,

inverter control, and overcurrent fault detection.

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

proportional voltage. Device accuracy is optimized through the

close proximity of the magnetic signal to the Hall transducer.

A precise, proportional output voltage is provided by the

low-offset, chopper-stabilized BiCMOS Hall IC, which is

programmed for accuracy at the factory.

Ty ste

pe d

TüV America

Certificate Number:

U8V 09 05 54214 021

High level immunity to current conductor dV/dt and stray

electric fields, offered by Allegro proprietary integrated shield

UL Certified

File No.: E316429

Package: 5-pin package

PSS

Leadform

PFF

Leadform

technology, guarantees low output voltage ripple and low offset

drift in high-side, high voltage applications.

The output of the device has a positive slope (>V CC / 2) when an

increasing current flows through the primary copper conduction

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 high overcurrent conditions. The terminals of the

Continued on the next page…

Additional leadforms available for qualifying volumes

Typical Application

+3.3 V

IP+

I P

VCC

ACS759

GND

C BYP

0.1 μ F

IP–

VIOUT

C F

R F

V OUT

Application 1. The ACS759 outputs an analog signal, V OUT , that

varies linearly with the bidirectional AC or DC primary current, I P ,

within the range specified. C F is for optimal noise management,

with values that depend on the application.

ACS759-DS

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