ACS704ELC-015

ACS704ELC-015 Datasheet


ACS704ELC-015 Fully Integrated, Hall Effect-Based Linear Current Sensor IC with Voltage Isolation and a Low-Resistance Current Conductor

Part Datasheet
ACS704ELC-015 ACS704ELC-015 ACS704ELC-015 (pdf)
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ACS704ELC-015 Fully Integrated, Hall Effect-Based Linear Current Sensor IC with Voltage Isolation and a Low-Resistance Current Conductor

Discontinued Product

These parts are no longer in production The device should not be purchased for new design applications. Samples are no longer available.

Date of status change October 30, 2007

Recommended Substitutions:

For existing customer transition, and for new customers or new applications, refer to the ACS712.

NOTE For detailed information on purchasing options, contact your local Allegro field applications engineer or sales representative.

ACS704ELC-015

Fully Integrated, Hall Effect-Based Linear Current Sensor IC with Voltage Isolation and a Low-Resistance Current Conductor

Package LC

Pin 1 IP+ Pin 2 IP+ Pin 3 Pin 4:

Pin 8 VCC Pin 7 VOUT Pin 6 N.C. Pin 5 GND

Pins 6 and 7 are internally connected in shipping product. For compatibility with future devices, leave pin 6 floating.

Nominal Operating Temperature, TA Range to 85ºC

Overcurrent Transient Tolerance*, IP 60 A *100 total pulses, 250 ms duration each, applied at a rate of 1 pulse every 100 seconds.

ABSOLUTE MAXIMUM RATINGS

Maximum Junction, TJ max ....................... 165°C Storage Temperature, TS to 170°C

The Allegro ACS704 family of current sensor ICs provides economical and precise solutions for current sensing in industrial, automotive, commercial, and communications systems. The device package allows for easy implementation by the customer. Typical applications include motor control, load detection and management, switched-mode 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 surface of the die. Applied current flowing through this copper conduction path generates a magnetic field which the integrated 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 voltage is provided by the low-offset, chopperstabilized BiCMOS Hall IC, which is programmed for accuracy at the factory.

The output of the device has a positive slope >VCC / 2 when an increasing current flows through the primary copper conduction path from pins 1 and 2, to pins 3 and 4 , which is the path used for current sampling. The internal resistance of this conductive path is typically mΩ, providing low power loss. The thickness of the copper conductor allows survival of the device at up to 3x overcurrent conditions. The terminals of the conductive path are electrically isolated from the signal leads pins 5 through This allows the ACS704 to be used in applications requiring electrical isolation without the use of opto-isolators or other costly isolation techniques.

The ACS704 is provided in a small, surface mount SOIC8 package. The leadframe is plated with 100% matte tin, which is compatible with standard lead Pb free printed circuit board assembly processes. Internally, the flip-chip uses high-temperature Pb-based solder balls, currently exempt from RoHS. The device is fully calibrated prior to shipment from the factory.

Features and Benefits
• Small footprint, low-profile SOIC8 package
• mΩ internal conductor resistance
• 800 VRMS minimum isolation voltage between pins 1-4 and 5-8
• to V, single supply operation
• 50 kHz bandwidth
• 100 mV/A output sensitivity and 20 A dynamic range
• Output voltage proportional to ac and dc currents
• Factory-trimmed for accuracy
• Extremely stable output offset voltage
• Near-zero magnetic hysteresis
• Ratiometric output from supply voltage

TÜV America Certificate Number U8V 04 12 54214 005
Use the following complete part number when ordering:

Part Number ACS704ELC-015

Package SOIC8 surface mount
115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 508 853-5000

ACS704ELC-015

Functional Block Diagram

Pin 3 Pin 4

Dynamic Offset Cancellation Filter

VCC Pin 8

Voltage Regulator

To all subcircuits

VOUT Pin 7

N.C. Pin 6

Gain

Temperature Coefficient

Trim Control

Offset

IP+ IP+ Pin 1 Pin 2

GND Pin 5

A Pins 6 and 7 are internally connected in shipping product. For compatibility with future devices, leave pin 6 floating.
115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 508 853-5000

ACS704ELC-015

ELECTRICAL CHARACTERISTICS, over operating ambient temperature range unless otherwise stated

Characteristic

Test Conditions

Min.

Typ.

Max.

Units

Primary Sensed Current1

Supply Voltage

Supply Current

VCC = V, output open

Output Resistance

ROUT

IOUT = mA

Output Capacitance Load

CLOAD

VOUT to GND

Output Resistive Load

RLOAD
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Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived ACS704ELC-015 Datasheet file may be downloaded here without warranties.

Datasheet ID: ACS704ELC-015 516102