ACS717 IC Datasheet

ACS717 Datasheet PDF, Equivalent


Part Number

ACS717

Description

Linear Current Sensor IC

Manufacture

Allegro

Total Page 14 Pages
Datasheet
Download ACS717 Datasheet


ACS717
ACS717
High Isolation, Linear Current Sensor IC
with 850 µΩ Current Conductor
FEATURES AND BENEFITS
• IEC/UL 60950-1 Ed. 2 certified to:
□Dielectric Strength = 4800 Vrms (tested for 60
seconds)
□Basic Isolation = 1550 Vpeak
□Reinforced Isolation = 800 Vpeak
• Small footprint, low-profile SOIC16 wide-body package
suitable for space constrained applications that require
high galvanic isolation
0.85 mΩ primary conductor for low power loss and high
inrush current withstand capability
• Low, 400 μARMS√Hz noise density results in typical
input referred noise of 70 mA(rms) at max bandwidth (40
kHz)
• 3.3 V, single supply operation
• Output voltage proportional to AC or DC current
• Factory-trimmed sensitivity and quiescent output voltage
for improved accuracy
• Chopper stabilization results in extremely stable
quiescent output voltage
• Ratiometric output from supply voltage
TÜV America
Certificate Number:
U8V 16 03 54214 040
CB 16 03 54214 039
CB Certificate Number:
US-32210-M1-UL
PACKAGE: 16-Pin SOICW (suffix MA)
Not to scale
DESCRIPTION
TheAllegroACS717 current sensor IC is an economical, high
isolation solution for AC or DC current sensing in industrial,
commercial, and communications systems. The small package
is ideal for space constrained applications, though the wide-
body provides the creepage and clearance needed for high
isolation. Typical applications include motor control, load
detection and management, switched-mode power supplies,
and overcurrent fault protection.
The device consists of a low-offset, linear Hall sensor 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 is sensed by the integrated Hall
IC and converted into a proportional voltage. Device accuracy
is optimized through the close proximity of the magnetic field
to the Hall transducer. A proportional voltage is provided by
the low-offset, chopper-stabilized BiCMOS Hall IC, which
is programmed for accuracy after packaging. The output of
the device has a positive slope when an increasing current
flows through the primary copper conduction path (from pins
1 through 4, to pins 5 through 8), which is the path used for
current sensing. The internal resistance of this conductive path
is 0.85 mΩ typical, providing low power loss.
The terminals of the conductive path are electrically isolated
from the sensor leads (pins 10 through 15 ). This allows the
ACS717 current sensor IC to be used in high-side current sense
applications without the use of high-side differential amplifiers
or other costly isolation techniques.
The ACS717 is provided in a small, low profile surface mount
SOICW16 package (suffix MA). The device is lead (Pb) free
with 100% matte tin leadframe plating. The device is fully
calibrated prior to shipment from the factory.
ACS717-DS, Rev. 3
MCO-0000163
16
1 NC
IP+
+IP
2
IP+
3
IP+
4
IP+
15
GND
14
NC
13
IP
NC
ACS717
12
VIOUT
5
IP–
–IP
6
IP–
7
IP–
8
IP–
11
NC
10
VCC
9
NC
Typical Application
The ACS717 outputs an
analog signal, VIOUT , that
changes, proportionally,
with the bidirectional AC
or DC primary sensed
CL
current, IP , within the
specified measurement
range.
CBYPASS
0.1 µF
May 21, 2019

ACS717
ACS717
High Isolation Linear Current Sensor IC
with 850 µΩ Current Conductor
SELECTION GUIDE
Part Number
IP
(A)
ACS717KMATR-10B-T [2]
ACS717KMATR-20B-T [2]
±10
±20
[1] Contact Allegro for additional packing options.
[2] Variant not intended for automotive applications.
SPECIFICATIONS
Sens(Typ)
at VCC = 3.3 V
(mV/A)
132
66
TA
(°C)
-40 to 125
Packing [1]
Tape and reel, 1000 pieces per reel
ABSOLUTE MAXIMUM RATINGS
Characteristic
Supply Voltage
Reverse Supply Voltage
Output Voltage
Reverse Output Voltage
Operating Ambient Temperature
Junction Temperature
Storage Temperature
Symbol
VCC
VRCC
VIOUT
VRIOUT
TA
TJ(max)
Tstg
Range K
Notes
Rating
7
–0.1
25
–0.1
–40 to 125
165
–65 to 165
Units
V
V
V
V
°C
°C
°C
ISOLATION CHARACTERISTICS
Characteristic
Dielectric Strength Test Voltage
Working Voltage for Basic Isolation
Working Voltage for Reinforced Isolation
Clearance
Creepage [3]
Symbol
VISO
VWVBI
VWVRI
Dcl
Dcr
Notes
Agency type tested for 60 seconds per IEC/UL 60950-1
(2nd Edition). Production tested for 1 second at 3000 VRMS
in accordance with IEC/UL 60950-1 (2nd Edition).
Maximum approved working voltage for basic (single)
isolation according IEC/UL 60950-1 (2nd Edition).
Maximum approved working voltage for reinforced isolation
according to IEC/UL 60950-1 (2nd Edition)
Minimum distance through air from IP leads to signal leads.
Minimum distance along package body from IP leads to
signal leads.
Rating
4800
1550
1097
800
565
7.5
8.2
Unit
VRMS
VPK
VRMS or VDC
VPK
VRMS or VDC
mm
mm
[3] In order to maintain this creepage in applications, the user should add a slit in the PCB under the package. Otherwise, the pads on the PCB will reduce the creepage.
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
2


Features ACS717 High Isolation, Linear Current Se nsor IC with 850 µΩ Current Conductor FEATURES AND BENEFITS • IEC/UL 609 50-1 Ed. 2 certified to: □□Dielectr ic Strength = 4800 Vrms (tested for 60 seconds) □□Basic Isolation = 1550 V peak □□Reinforced Isolation = 800 V peak • Small footprint, low-profile SOIC16 wide-body package suitable for s pace constrained applications that requ ire high galvanic isolation • 0.85 m Ω primary conductor for low power loss and high inrush current withstand capa bility • Low, 400 μARMS√Hz noise density results in typical input referr ed noise of 70 mA(rms) at max bandwidth (40 kHz) • 3.3 V, single supply op eration • Output voltage proportiona l to AC or DC current • Factory-trim med sensitivity and quiescent output vo ltage for improved accuracy • Choppe r stabilization results in extremely st able quiescent output voltage • Rati ometric output from supply voltage TÜ V America Certificate Number: U8V 16 03 54214 040 CB 16 03 54214 039 CB Certificate Number: US-32210.
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