Current Sensor: ACS750xCA-050
Worcester, Massachusetts 01615-0036 (508) 853-5000
Copyright 2003, Allegro MicroSystems, Inc.
ACS75050-DS Rev.4
Always order by complete part number:
Always order by complete part number:
ACS750SCA-050
ACS750LCA-050
The Allegro ACS750 family of current sensors provides economical and precise
solutions for current sensing in industrial, commercial, automotive, and com-
munications systems. The device package allows easy implementation by the
customer. Typical applications include: motor control, load detection and man-
agement, switched mode power supplies, and overcurrent fault protection.
The sensor consists of a precision linear Hall IC, which is optimized to an internal
magnetic circuit to increase device sensitivity. The combination of a precisely
controlled self-aligning assembly process (patents pending), and the factory pro-
grammed precision of the linear Hall sensor, result in high-level performance and
product uniformity.
The primary conductor used for current sensing (terminals 4 and 5) is designed
for extremely low power loss. These power terminals also are electrically isolated
from the sensor leads (pins 1, 2, and 3). This allows the ACS750 family of sen-
sors to be used in applications requiring electrical isolation, without using opto-
isolators or other costly isolation techniques.
The output of this device has a positive slope (>V
CC
/ 2) when an increasing cur-
rent fl ows from terminal 4 to terminal 5.
The ACS750 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.
Features and Benefi ts
Monolithic Hall IC for high reliability
Single +5 V supply
High isolation voltage
Lead-free
UL recognized
Automotive temperature range available
End-of-line factory-trimmed for gain and offset
Ultra-low power loss: low resistance of primary conductor
Ratiometric output from supply voltage
Low thermal drift of offset voltage
On-chip transient protection
Small package size, with easy mounting capability
Applications
Industrial systems
Motor control
Power conversion
Battery monitors
Automotive systems
AB SO LUTE MAX I MUM RAT INGS
Operating Temperature
S .....................................................20 to +85C
L ...................................................40 to +150C
Supply Voltage, Vcc...........................................16 V
Output Voltage ...................................................16 V
Output Current Source ..................................... 3 mA
Output Current Sink........................................10 mA
Maximum Storage Temperature...................... 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
Copyright 2003, Allegro MicroSystems, Inc.
ACS75050-DS Rev.4
Current Sensor: ACS750xCA-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
Primary Conductor Resistance
R
PRIMARY
I
P
= 100A, T
A
= 100A, T
= 100A, T = 25C
A
A
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 = +25C
4
s
Response time
t
RESPONSE
I
P
= 50 A, T = +25C
27
s
Rise time
t
r
I
P
= 50 A, T = +25C
26
s
Frequency Bandwidth
f
3 dB, T = 25C
13
kHz
Sensitivity
Sens
I
P
, T = 25C
39
40
42
mV/A
I
P
36
44
mV/A
Noise
V
NOISE
Peak-to-peak, T = 25C
External fi lter BW = 24 kHz
14
mV
Nonlinearity
E
LIN
I
P
5
%
Symmetry
E
SYM
I
P
99
102
105
%
Zero Current Output Voltage
V
OUT(Q)
I = 0 A, T = 25C
2.5
V
Electrical Offset Voltage
(Magnetic error not included)
V
OE
I = 0 A, T = 25C
60
60
mV
I = 0 A
75
75
mV
Magnetic Offset Error
V
OM
I = 0 A, after excursion of 100 A
0.3
0.8
A
Total Output Error
(Including all offsets)
E
TOT
I
P
, T = 25C
2
%
I
P
13
%
PERFORMANCE CHARACTERISTICS, -40C to +150C, V
CC
= 5 V unless otherwise specifi ed
Propagation time
t
PROP
I
P
= 50 A
4
s
Response time
t
RESPONSE
I
P
= 50 A
27
s
Rise time
t
r
I
P
= 50 A
26
s
Frequency Bandwidth
f
3 dB, T = 25C
13
kHz
Sensitivity
Sens
I
P
, T = 25C
39
40
42
mV/A
I
P
, T = 25C
33
46
mV/A
Noise
V
NOISE
Peak-to-peak; T = +25C
External fi lter BW = 40 kHz
14
mV
Nonlinearity
E
LIN
I
P
5
%
Symmetry
E
SYM
I
P
99
102
105
%
Zero Current Output Voltage
V
OUT(Q)
I = 0 A, T = 25C
2.5
V
Electrical Offset Voltage
(Magnetic error not included)
V
OE
I = 0 A, T = 25C
60
60
mV
I = 0 A
90
90
mV
Magnetic Offset Error
V
OM
I = 0 A, after excursion of 100 A
0.3
0.8
A
Total Output Error
(Including all offsets)
E
TOT
I
P
, T = 25C
2
%
I
P
15
%
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