ACS758xCB
Thermally Enhanced, Fully Integrated, Hall-Effect-Based
Linear Current Sensor IC with 100 µΩ Current Conductor
Not for New Design
These parts are in production but have been determined to be
NOT FOR NEW DESIGN. This classification indicates that sale of
this device is currently restricted to existing customer applications.
The device should not be purchased for new design applications
because obsolescence in the near future is probable. Samples are no
longer available.
Date of status change: June 5, 2017
Recommended Substitutions:
For existing customer transition, and for new customers or new appli-
cations, use
ACS770xCB.
NOTE: For detailed information on purchasing options, contact your
local Allegro field applications engineer or sales representative.
Allegro MicroSystems, LLC reserves the right to make, from time to time, revisions to the anticipated product life cycle plan
for a product to accommodate changes in production capabilities, alternative product availabilities, or market demand. The
information included herein is believed to be accurate and reliable. However, Allegro MicroSystems, LLC assumes no respon-
sibility for its use; nor for any infringements of patents or other rights of third parties which may result from its use.
ACS758xCB
Thermally Enhanced, Fully Integrated, Hall-Effect-Based
Linear Current Sensor IC with 100 µΩ Current Conductor
FEATURES AND BENEFITS
• Industry-leading noise performance through proprietary
amplifier and filter design techniques
• Integrated shield greatly reduces capacitive coupling
from current conductor to die due to high dV/dt signals,
and prevents offset drift in high-side, high-voltage
applications
• Total output error improvement through gain and offset
trim over temperature
• Small package size, with easy mounting capability
• Monolithic Hall IC for high reliability
•
Ultralow power loss: 100 µΩ internal conductor
resistance
• Galvanic isolation allows use in economical, high-side
current sensing in high-voltage systems
• AEC-Q100 qualified
DESCRIPTION
The Allegro
™
ACS758 family of current sensor ICs provides
economical and precise solutions for AC or DC current sensing.
Typical applications include motor control, load detection and
management, power supply and DC-to-DC converter control,
inverter control, and overcurrent fault detection.
The device consists of a precision, low-offset linear Hall
circuit with a copper conduction path located near the die.
Applied current flowing through this copper conduction path
generates a magnetic field which the Hall IC converts into a
proportional voltage. Device accuracy is optimized through the
close proximity of the magnetic signal to the Hall transducer.
A precise, proportional output voltage is provided by the
low-offset, chopper-stabilized BiCMOS Hall IC, which is
programmed for accuracy at the factory.
High-level immunity to current conductor dV/dt and stray
electric fields, offered by Allegro proprietary integrated shield
technology, provides low output voltage ripple and low offset
drift in high-side, high-voltage applications.
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 sampling. The internal resistance of this conductive
path is 100 µΩ typical, providing low power loss.
The thickness of the copper conductor allows survival of the
device at high overcurrent conditions. The terminals of the
conductive path are electrically isolated from the signal leads
Continued on the next page…
pe d
Ty ste
te
TÜV America
Certificate Number:
U8V 14 05 54214 028
UL Certified
File No.: E316429
PACKAGE:
5-Pin CB Package
PFF
Leadform
PSF
Leadform
PSS
Leadform
Continued on the next page…
+3.3 or 5 V
4
I
P
5
IP–
IP+
ACS758
VCC
1
2
C
F
VIOUT
3
R
F
V
OUT
C
BYP
0.1 µF
GND
Application 1: The ACS758 outputs an analog signal, V
OUT
,
that varies linearly with the uni- or bi-directional AC or DC
primary sampled current, I
P
, within the range specified. C
F
is
for optimal noise management, with values that depend on
the application.
Typical Application
ACS758-DS, Rev. 11
June 5, 2017
ACS758xCB
Thermally Enhanced, Fully Integrated, Hall-Effect-Based
Linear Current Sensor IC with
100 µΩ
Current Conductor
DESCRIPTION (CONTINUED)
•
•
•
•
•
•
•
FEATURES AND BENEFITS (CONTINUED)
3.0 to 5.5 V, single supply operation
120 kHz typical bandwidth
3 µs output rise time in response to step input current
Output voltage proportional to AC or DC currents
Factory-trimmed for accuracy
Extremely stable output offset voltage
Nearly zero magnetic hysteresis
(pins 1 through 3). This allows the ACS758 family of sensor ICs
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 ACS758 family is lead (Pb) free. All leads are plated with 100%
matte tin, and there is no Pb inside the package. The heavy gauge
leadframe is made of oxygen-free copper.
Selection Guide
Part
Number
[1]
Package
Terminals
Formed
Formed
Formed
Straight
Formed
Formed
Straight
Straight
Formed
Formed
Straight
Straight
Straight
Formed
Signal Pins
Formed
Formed
Formed
Formed
Formed
Formed
Formed
Straight
Formed
Formed
Formed
Formed
Straight
Formed
Primary Sampled
Current, I
P
(A)
±50
50
±100
±100
100
±150
150
±150
150
±200
±200
200
±200
200
Sensitivity
Sens (Typ.)
(mV/A)
40.
60.
20.
20.
40.
13.3
26.7
13.3
26.7
10.
10.
20
10.
20.
Current
Directionality
Bidirectional
Unidirectional
Bidirectional
Bidirectional
Unidirectional
Bidirectional
Unidirectional
Bidirectional
Unidirectional
Bidirectional
Bidirectional
Unidirectional
Bidirectional
Unidirectional
–40 to 85
–40 to 125
34 pieces
per tube
–40 to 150
T
OP
(°C)
Packing
[2]
ACS758LCB-050B-PFF-T
ACS758LCB-050U-PFF-T
ACS758LCB-100B-PFF-T
ACS758LCB-100B-PSF-T
ACS758LCB-100U-PFF-T
ACS758KCB-150B-PFF-T
ACS758KCB-150U-PSF-T
ACS758KCB-150B-PSS-T
ACS758KCB-150U-PFF-T
ACS758ECB-200B-PFF-T
ACS758ECB-200B-PSF-T
ACS758ECB-200U-PSF-T
ACS758ECB-200B-PSS-T
ACS758ECB-200U-PFF-T
1
Additional
2
Contact Allegro
leadform options available for qualified volumes.
for additional packing options.
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
2
ACS758xCB
Thermally Enhanced, Fully Integrated, Hall-Effect-Based
Linear Current Sensor IC with
100 µΩ
Current Conductor
SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS
Characteristic
Forward Supply Voltage
Reverse Supply Voltage
Forward Output Voltage
Reverse Output Voltage
Output Source Current
Output Sink Current
Nominal Operating Ambient Temperature
Maximum Junction
Storage Temperature
Symbol
V
CC
V
RCC
V
IOUT
V
RIOUT
I
OUT(Source)
I
OUT(Sink)
T
OP
T
J
(max)
T
stg
VIOUT to GND
VCC to VIOUT
Range E
Range K
Range L
Notes
Rating
8
–0.5
28
–0.5
3
1
–40 to 85
–40 to 125
–40 to 150
165
–65 to 165
Units
V
V
V
V
mA
mA
°C
°C
°C
°C
°C
ISOLATION CHARACTERISTICS
Characteristic
Dielectric Strength Test Voltage
[1]
Working Voltage for Basic Isolation
Working Voltage for Reinforced Isolation
1
Allegro
Symbol
V
ISO
V
WFSI
V
WFRI
Notes
Agency type-tested for 60 seconds per
UL standard 60950-1, 2nd Edition
For basic (single) isolation per UL standard 60950-1, 2nd
Edition
For reinforced (double) isolation per UL standard 60950-1,
2nd Edition
Rating
4800
990
700
636
450
Unit
VAC
VDC or V
pk
V
rms
VDC or V
pk
V
rms
does not conduct 60-second testing. It is done only during the UL certification process.
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
3
ACS758xCB
Thermally Enhanced, Fully Integrated, Hall-Effect-Based
Linear Current Sensor IC with
100 µΩ
Current Conductor
THERMAL CHARACTERISTICS:
May require derating at maximum conditions
Characteristic
Symbol
Test Conditions
[1]
Mounted on the Allegro evaluation board with 2800 mm
2
(1400 mm
2
on component side and 1400 mm
2
on
opposite side) of 4 oz. copper connected to the primary
leadframe and with thermal vias connecting the copper
layers. Performance is based on current flowing through
the primary leadframe and includes the power consumed
by the PCB.
Value
Unit
Package Thermal Resistance
R
θJA
7
°C/W
1
Additional
thermal information available on the Allegro website
TYPICAL OVERCURRENT CAPABILITIES
[2][3]
Characteristic
Overcurrent
Symbol
I
POC
Notes
T
A
= 25°C, 1 second duration, 1% duty cycle
T
A
= 85°C, 1 second duration, 1% duty cycle
T
A
= 150°C, 1 second duration, 1% duty cycle
2
Test
3
For
Rating
1200
900
600
Units
A
A
A
was done with Allegro evaluation board. The maximum allowed current is limited by T
J
(max) only.
more overcurrent profiles, please see FAQ on the Allegro website, www.allegromicro.com.
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
4
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