ACS714 datasheet(4/18 Pages) ALLEGRO

4 / 18 page

Automotive Grade, Fully Integrated, Hall Effect-Based Linear Current Sensor IC

with 2.1 kVRMS Voltage Isolation and a Low-Resistance Current Conductor

ACS714

Allegro MicroSystems, LLC

115 Northeast Cutoff, Box 15036

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

www.allegromicro.com

COMMON THERMAL CHARACTERISTICS1

Min.

Typ.

Max.

Units

Operating Internal Leadframe Temperature

E range

–40

–

°C

L range

–40

–

150

°C

Value

Units

Junction-to-Lead Thermal Resistance2

RθJL Mounted on the Allegro ASEK 714 evaluation board

°C/W

Junction-to-Ambient Thermal Resistance

RθJA

Mounted on the Allegro 85-0322 evaluation board, includes the power con-

sumed by the board

°C/W

1Additional thermal information is available on the Allegro website.

2The Allegro evaluation board has 1500 mm2 of 2 oz. copper on each side, connected to pins 1 and 2, and to pins 3 and 4, with thermal vias connect-

ing the layers. Performance values include the power consumed by the PCB. Further details on the board are available from the Frequently Asked

Questions document on our website. Further information about board design and thermal performance also can be found in the Applications Informa-

tion section of this datasheet.

COMMON OPERATING CHARACTERISTICS1 over full range of T

A, CF = 1 nF, and VCC = 5 V, unless otherwise specified

Characteristic

Symbol

Test Conditions

Min.

Typ.

Max.

Units

ELECTRICAL CHARACTERISTICS

Supply Voltage

VCC

4.5

5.0

5.5

Supply Current

ICC

VCC = 5.0 V, output open

–

Output Capacitance Load

CLOAD

VIOUT to GND

–

Output Resistive Load

RLOAD

VIOUT to GND

4.7

–

kΩ

Primary Conductor Resistance

RPRIMARY TA = 25°C

–

1.2

–

mΩ

Rise Time

IP = IP(max), TA = 25°C, COUT = open

–

3.5

–

μs

Frequency Bandwidth

–3 dB, TA = 25°C; IP is 10 A peak-to-peak

–

kHz

Nonlinearity

ELIN

Over full range of IP

–

1.5

–

Symmetry

ESYM

Over full range of IP

100

102

Zero Current Output Voltage

VIOUT(Q)

Bidirectional; IP = 0 A, TA = 25°C

–

VCC ×

0.5

–V

Power-On Time

tPO

Output reaches 90% of steady-state level, TJ=25°C, 20 A present

on leadframe

–35

–

μs

Magnetic Coupling2

–

G/A

Internal Filter Resistance3

RF(INT)

1.7

kΩ

1Device may be operated at higher primary current levels, IP, and ambient, TA, and internal leadframe temperatures, TA, provided that the Maximum

Junction Temperature, TJ(max), is not exceeded.

21G = 0.1 mT.

3RF(INT) forms an RC circuit via the FILTER pin.

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