Current Sensor: ACS752SCA-050
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
ACS75250-DS Rev. 6
Always order by complete part number:
ACS752SCA-050
Features and Benefi ts
Monolithic Hall IC for high reliability
Single +5 V supply
3
kV
RMS
isolation voltage between terminals 4/5 and pins 1/2/3
50 kHz bandwidth
Lead-free
End-of-line factory-trimmed for gain and offset
Ultra-low power loss: 130 internal conductor resistance
Ratiometric output from supply voltage
Extremely stable output offset voltage
Small package size, with easy mounting capability
Output proportional to ac and dc currents
Applications
Industrial
systems
Motor
control
Power
distribution
Battery powered systems
Electric
vehicles
The Allegro ACS75x family of current sensors 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, power supplies, and overcurrent fault protection.
The device consists of a precision, low-offset linear Hall sensor circuit with a
copper conduction path located near 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 signal to the Hall
transducer. A precise, proportional voltage is provided by the low-offset, chopper-
stabilized BiCMOS Hall IC, which is programmed for accuracy at the factory.
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 sensing. The internal resistance of
this conductive path is typically 130 , providing low power loss. The thickness
of the copper conductor allows survival of the device at up to 5 overcurrent
conditions. The terminals of the conductive path are electrically isolated from the
sensor leads (pins 1 through 3). This allows the ACS75x family of sensors to be
used in applications requiring electrical isolation without the use of opto-isolators
or other costly isolation techniques.
The device is fully calibrated prior to shipment from the factory. The ACS75x
family is lead-free. All leads are coated with 100% matte tin, and there is no lead
inside the package. The heavy gauge leadframe is made of oxygen-free copper.
AB SO LUTE MAX I MUM RAT INGS
Operating Temperature
S .....................................................20 to +85C
Supply Voltage, Vcc...........................................16 V
Reverse Supply Voltage, V
RCC
........................16 V
Output Voltage ...................................................16 V
Reverse Output Voltage, V
ROUT
...................... 0.1 V
Output Current Source ..................................... 3 mA
Output Current Sink........................................10 mA
Maximum Storage Temperature...........65 to 170C
Maximum Junction Temperature .................... 165C
1 2
3
4
5
Pin 1: V
CC
Pin 2: Gnd
Pin 3: Output
Terminal 4: I
p+
Terminal 5: I
p-
TV America
Certifi cate Number:
U8V 04 11 54214 002
3
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
ACS75250-DS Rev. 6
Current Sensor: ACS752SCA-050
ELECTRICAL CHARACTERISTICS,
over temperature unless otherwise stated
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Units
Primary Sensed Current
I
P
50
50
A
Supply Voltage
V
CC
4.5
5.0
5.5
V
Supply Current
I
CC
V
CC
= 5.0 V, output open
7
10
mA
Output Resistance
R
OUT
I
OUT
= 1.2 mA
1
2
Output Capacitance Load
C
LOAD
VOUT to GND
10
nF
Output Resistive Load
R
LOAD
VOUT to GND
4.7
k
Primary Conductor Resistance
R
PRIMARY
I
P
= 100A, T
A
= 25C
130
Isolation Voltage
V
ISO
Pins 1-3 and 4-5, 60 Hz, 1 minute
3.0
kV
PERFORMANCE CHARACTERISTICS, -20C to +85C, V
CC
= 5 V unless otherwise specifi ed
Propagation time
t
PROP
I
P
= 50 A, T
A
= 25C
4
s
Response time
t
RESPONSE
I
P
= 50 A, T
A
= 25C
8
s
Rise time
t
r
I
P
= 50 A, T
A
= 25C
7
s
Frequency Bandwidth
f
3 dB, T
A
= 25C
50
kHz
Sensitivity
Sens
Over full range of I
P
, T
A
= 25C
38.0
40.0
42.0
mV/A
Over full range of I
P
37.0
42.5
mV/A
Noise
V
NOISE
Peak-to-peak, T
A
= 25C,
no external fi lter
75
mV
Nonlinearity
E
LIN
Over full range of I
P
4
%
Symmetry
E
SYM
Over full range of I
P
97.5
100
102.5
%
Zero Current Output Voltage
V
OUT(Q)
I = 0 A, T
A
= 25C
V
CC
/ 2
V
Electrical Offset Voltage
(Magnetic error not included)
V
OE
I = 0 A, T
A
= 25C
40
40
mV
I = 0 A
60
60
mV
Magnetic Offset Error
I
ERROM
I = 0 A, after excursion of 100 A
0.3
0.65
A
Total Output Error
(Including all offsets)
E
TOT
Over full range of I
P
, T
A
= 25C
1
%
Over full range of I
P
7.5
%
5
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
ACS75250-DS Rev. 6
Current Sensor: ACS752SCA-050
Magnetic Offset
Vcc = 5 V
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
-40
-20
0
20
40
60
80
100
Temperature (C)
Magnetic
Offset
(A)
I = 0 A, after excursion to 100 A
0 Ampere Accuracy Error
Vcc = 5 V
Without Offset
-1
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1
-40
-20
0
20
40
60
80
100
Temperature (C)
0
A
Accuracy
Error
(
A)
Total Accuracy
100{[(MeasQVo@Ip IdealQVo@Ip)
IdealSens] Ip}
-5
-4
-3
-2
-1
0
1
2
3
4
5
-20
25
85
Tota
l
A
c
c
u
r
a
c
y
(%)
Temperature (C)
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