Data Sheet

Fully Integrated, Hall Effect-Based Linear Current Sensor IC
with
2.1 kVRMS Isolation and a Low-Resistance Current Conductor
ACS712
2
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
Absolute Maximum Ratings
Characteristic Symbol Notes Rating Units
Supply Voltage V
CC
8 V
Reverse Supply Voltage V
RCC
–0.1 V
Output Voltage V
IOUT
8 V
Reverse Output Voltage V
RIOUT
–0.1 V
Output Current Source I
IOUT(Source)
3 mA
Output Current Sink I
IOUT(Sink)
10 mA
Overcurrent Transient Tolerance I
P
1 pulse, 100 ms 100 A
Nominal Operating Ambient Temperature T
A
Range E –40 to 85 ºC
Maximum Junction Temperature T
J
(max) 165 ºC
Storage Temperature T
stg
–65 to 170 ºC
Selection Guide
Part Number Packing*
T
A
(°C)
Optimized Range, I
P
(A)
Sensitivity, Sens
(Typ) (mV/A)
ACS712ELCTR-05B-T Tape and reel, 3000 pieces/reel –40 to 85 ±5 185
ACS712ELCTR-20A-T Tape and reel, 3000 pieces/reel –40 to 85 ±20 100
ACS712ELCTR-30A-T Tape and reel, 3000 pieces/reel –40 to 85 ±30 66
*Contact Allegro for additional packing options.
the device at up to 5× overcurrent conditions. The terminals of the
conductive path are electrically isolated from the signal leads (pins
5 through 8). This allows the ACS712 to be used in applications
requiring electrical isolation without the use of opto-isolators or
other costly isolation techniques.
The ACS712 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 device is Pb-free, except for flip-chip high-temperature
Pb-based solder balls, currently exempt from RoHS. The device is
fully calibrated prior to shipment from the factory.
Description (continued)
Parameter Specification
Fire and Electric Shock
CAN/CSA-C22.2 No. 60950-1-03
UL 60950-1:2003
EN 60950-1:2001
Isolation Characteristics
Characteristic Symbol Notes Rating Unit
Dielectric Strength Test Voltage* V
ISO
Agency type-tested for 60 seconds per
UL standard 60950-1, 1st Edition
2100 VAC
Working Voltage for Basic Isolation V
WFSI
For basic (single) isolation per UL standard
60950-1, 1st Edition
354 VDC or V
pk
Working Voltage for Reinforced Isolation V
WFRI
For reinforced (double) isolation per UL standard
60950-1, 1st Edition
184 VDC or V
pk
* Allegro does not conduct 60-second testing. It is done only during the UL certification process.