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ACS37002 Datasheet Preview

ACS37002 Datasheet

High Accuracy Current Sensor

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ACS37002
400 kHz, High Accuracy Current Sensor
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
FEATURES AND BENEFITS
• High operating bandwidth for fast control loops or where
high-speed currents are monitored
□400 kHz bandwidth
□2 µs typical response time
• High accuracy
□As low as 1% maximum sensitivity error over temperature
(K series)
□6 mV maximum offset voltage over temperature
□Non-ratiometric operation with VREF output
□Low noise LA package
• 124 mVRMS for 3.3 V supply
• 160 mVRMS for 5 V supply
□Differential sensing for high immunity to external
magnetic fields
□No magnetic hysteresis
• Adjustable fast overcurrent alert
□1 µs typical response time
□Pin adjustable threshold
• Externally configurable gain settings using two logic pins
Continued on the next page…
PACKAGE: 16-Pin SOICW (suffix MA/LA)
DESCRIPTION
TheACS37002 is a fully integrated Hall-effect current sensor in
an SOICW-16 package that is factory-trimmed to provide high
accuracy over the entire operating range without the need for
customer programming. The current is sensed differentially by
two Hall plates that subtract out interfering external common-
mode magnetic fields.
The package construction provides high isolation by
magnetically coupling the field generated by the current in
the conductor to the monolithic Hall sensor IC which has no
physical connection to the integrated current conductor. The
MA package is optimized for higher isolation with withstand
voltage, 4.8 kVRMS, and 0.85 mΩ conductor resistance. The
LA package is optimized for lower noise with 3.6 kVRMS with
stand voltage and 1 mΩ conductor resistance.
The fast overcurrent alert fault output has a user-configurable
threshold by an analog input, providing short-circuit detection
and enhanced system protection. The sensor also has four user-
selectable gain options with two logic inputs without the need
for extra components. This reduces the need to stock inventory
of individual devices with different gain. The analog output
with VREF pin is for use in noisy supply environments.
Not to scale
ACS37002
VCC
1
16
IP+ GAIN_SEL_0
2
15
IP+
GND
VCC
3
IP+
GAIN_SEL_1 14
4
IP+
IP
5
IP-
VREF 13
VIOUT 12
6
IP-
7
IP-
11
VOC
VCC 10
VCC
CREF
CL
8
IP-
9
OCF
CBYPASS
RVOC(H)
VCC
RPU
MCU
VCC
ADC
ADC
GND
Digital I/O
CVOC
RVOC(L)
Figure 1: Typical Bidirectional Application.
For more application circuits, refer to the application circuit section.
ACS37002-DS, Rev. 1
MCO-0000900
July 8, 2020




Allegro

ACS37002 Datasheet Preview

ACS37002 Datasheet

High Accuracy Current Sensor

No Preview Available !

ACS37002
400 kHz, High Accuracy Current Sensor
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
FEATURES AND BENEFITS (continued)
□4 adjustable gain levels for increased design flexibility
□Enabling measurement ranges from 10 to 133 A in both
unidirectional and bidirectional modes
Low internal primary conductor resistance 0.85 mΩ (MA) and
1 mΩ (LA) for better power efficiency
• UL-certified to 60950 standard, highly isolated compact
SOICW-16 surface mount package (MA)
□4.8 kVRMS rated isolation voltage
□1097 VRMS / 1550 VDC basic isolation voltages
□565 VRMS / 880 VDC reinforced isolation voltages
• Wide operating temperature, –40°C to 150°C
• Commercial qualified
SELECTION GUIDE
Part Number
ACS37002LMACTR-050B5
ACS37002LMACTR-066B5
ACS37002LMACTR-050U5
ACS37002LMACTR-066U5
ACS37002LMACTR-050B3
ACS37002LMACTR-066B3
ACS37002LMACTR-050U3
ACS37002LMACTR-066U3
ACS37002KMACTR-050B5
ACS37002KMACTR-050B3
ACS37002LLAATR-015B5
ACS37002LLAATR-025B5
ACS37002LLAATR-015B3
ACS37002LLAATR-025U3
Current Sensing
Range, IPR (A)
Sensitivity [1]
Sens (mV/A)
MA Package, 16-Pin SOICW
±33, ±40, ±50, ±66
60, 50, 40, 30
±66, ±80 ±100, ±133
30, 25, 20, 15
33, 40, 50, 66
120, 100, 80, 60
66, 80, 100, 133
60, 50, 40, 30
±33, ±40, ±50, ±66
39.6, 33, 26.4, 19.8
±66, ±80, ±100, ±133
19.8, 16.5, 13.2, 9.9
33, 40, 50, 66
79.2, 66, 52.8, 39.6
66, 80, 100, 133
39.6, 33, 26.4, 19.8
±33, ±40, ±50, ±66
60, 50, 40, 30
±33, ±40, ±50, ±66
39.6, 33, 26.4, 19.8
LA Package [3], 16-Pin SOICW
±10, ±12, ±15, ±20
200,166.6,133.3,100
±25, ±30, ±37.5, ±50
80, 66.6, 53.3, 40
±10, ±12, ±15, ±20
132, 110, 88, 66
+25, +30, +37.5, +50
105.6, 88, 70.4, 52.8
Nominal VCC
(V)
5
3.3
5
3.3
5
3.3
Optimized
Temp. Range
TA (°C)
–40 to 150 [3]
–40 to 125 [4]
–40 to 150
Packing [2]
1000 pieces
per 13-inch reel
1000 pieces
per 13-inch reel
[1] Refer to the part specific performance characteristics sections for Gain_Sel configuration.
[2] Contact Allegro for additional options.
[3] Advanced information. LA package and LMA variation is not yet released.
[4] The device performance is optimized from –40°C to 125°C; however, the device can still operate to an ambient temperature of 150°C. The device shares the same
qualifications as the L temperature devices unless otherwise stated.
2
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com



Part Number ACS37002
Description High Accuracy Current Sensor
Maker Allegro
Total Page 3 Pages
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