ACS758KCB-150U-PFF-T【PDF 1/22 页】IC SENSOR CURRENT 150A UNI 3-CB

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ACS758xCB

Thermally Enhanced, Fully Integrated, Hall Effect-Based

Linear Current Sensor IC with 100 μ Ω Current Conductor

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

? AEC Q-100 qualified

Continued on the next page…

Description

The Allegro ? ACS758 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.

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TüV America

High level immunity to current conductor dV/dt and stray

Certificate Number:

U8V 12 05 54214 024

UL Certified

File No.: E316429

Package: 5-pin package

electric fields, offered by Allegro proprietary integrated shield

technology, provides 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

PFF

Leadform

PSF

Leadform

PSS

Leadform

Continued on the next page…

Typical Application

+3.3 or 5 V

IP+

I P

VCC

ACS758

GND

C BYP

0.1 μ F

IP–

VIOUT

C F

R F

V OUT

Application 1. The ACS758 outputs an analog signal, V OUT , that

varies linearly with the uni- or bi-directional AC or DC primary

sampled current, I P , within the range specified. C F is for optimal

noise management, with values that depend on the application.

ACS758-DS, Rev. 8

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