Small Form Factor, High Bandwidth
Hall-Effect Sensor IC Solutions
Key Features• Industry’s highest bandwidth, up to 1 MHz• Lower power loss than shunt-based solutions• Industry-Leading accuracy, as high as 1% typicalFigure 1: SIP Package

Figure 2: LR Package

Figure 3: SOIC-16 Package

Figure 4: SOIC-8 Package

Figure 5: CB Package

Figure 6: QFN Package• Monolithic Hall and GMR sensors offer full integration• Smaller form factor than shunt and current
transformer solutions• Able to measure both AC and DC currents• Differential sensing for rejection of stray magnetic fields• Up to 5 kVRMS certfied isolation rating• Single supply operation, 3.3 V and 5 V available

INNOVATIVE CURRENT SENSINGFOR VEHICLE ELECTRIFICATIONCHARGE INTO THE FUTURE OF VEHICLE ELECTRIFICATION WITH THE WORLD’S #1
SUPPLIER OF CURRENT SENSOR ICS FOR LEADING EV APPLICATIONS

SEE HOW ALLEGRO IS MOVING THE WORLDTOWARD A SAFE AND SUSTAINABLE FUTURE
Learn more about Allegro Current Sensor ICs atwww.allegromicro.com/currentsensors
AM004 - 3.21

Innovative Current Sensor ICs

Innovative Current Sensor ICs

Allegro MicroSystems has been driving innovation in the current sensor industry for nearly two decades, with a history of first-to-market

0 to 400 A Integrated Conductor Sensor ICs

products that give our customers a competitive edge. Our advanced ICs help you achieve higher efficiency and power density in 		• Innovative, fully integrated current sensor solutions are safe, 							accurate, and easy to use

your designs.
We’re leading the market in main traction motor and auxiliary inverters for electric vehicles, and OEMs trust Allegro for applications like
DC-DC converters and on-board chargers.
We also shine at high voltage with industry-leading galvanic isolation ratings of up to 1100 VRMS.
Wherever current sensing is needed, an Allegro sensor IC can provide a solution.

0 to >1000 A Sensor ICs• Automotive-grade devices deliver highly accurate open-loop
current sensing• Broad sensing range with 0.1 to 1 mΩ resistance improves efficiency 						across a variety of EV systems• Reliable packages provide high galvanic isolation, making for 						flexible solutions ideal for use in line-side or high-voltage applications• CB package integrated core sensors increase ease of use, reducing 						development and integration time and effort• Allegro current sensors are much smaller than bulky current
transformers, reducing footprint within systems and increasing 						overall efficiency

Allegro’s 0 to 400 A sensors offer highly accurate, 							See figures 2 and 5 illustrations on back coverindustry-proven, fully integrated solutions that can help 						minimize footprint and BOM for resource-conscious users.

• Industry-leading offset and sensitivity accuracy from –40°C to 150°C.
• With typical accuracy of 1% over temperature, our current sensors enableprecise electric drive, steering, and braking with higher efficiency• Customer programmable for both offset and sensitivity

Type• Packaged in a 1 mm thick SIP or TSSOP package for easy assembly• High bandwidth (up to 240 kHz) for short circuit and overcurrent detection

Bidirectional,
Unidirectional
Bidirectional,
Unidirectional
Bidirectional,
Unidirectional• Integrated safety features, like integrated fault outputs, reduce BOM andsystem complexity• User-programmable overcurrent fault outputPartNumber

Measurement Range (A)Isolation
Voltage (VRMS)

Bandwidth(kHz)

Vcc

Temperature
RangesPackages

ACS772±50, ±100, ±150, ±200, ±250, ±300
±400, 50, 100, 150, 200, 250, 400

4800

200

5E,K,LCBACS773±50, ±100, ±150, ±200, 250, ±250

4800

200

3.3

E,K,L

CB

ACS72981±50, ±100, ±150, ±200, 50, 100, 150, 200

100

250

3.3,5E, K,LLR

Industry-first core free and shield free current sensing solutions Allegro’s coreless current sensors are safe, accurate, and easy touse. Eliminate the core in traction motor inverters, lowering costand enabling higher power density solutions
See figure 1 illustration on back cover

TypePartNumber

TypicalSensitivity(mV/G)

Quiescent
Output (V)Bandwidth(kHz)Supply Voltage(V)

Temperature
RangesPackages

Bidirectional,
Unidirectional

ACS37610

5,1050% VCC

250

5LTSSOP

Bidirectional,
Unidirectional

ACS37612

5, 10, 15

50% VCC (Bi)10% VCC (Uni)120

3.3, 5LTSSOP

Bidirectional

ACS70311

0.5 to 11.5

50% VCC (Bi)10% VCC (Uni)

240

5L

SIP

Temperature range codes: S = –20°C to 85°C, E = –40°C to 85°C, K = –40°C to 125°C, L = –40°C to 150°C
For full product selection guides, visit www.allegromicro.com/currentsensors		

0 to 50 A Integrated Conductor Sensor ICs• Factory programmed to maximize device accuracy over temperature, 		
providing typical output error as low as 1%• Grade 0 Automotive-qualified current sensors provide an ideal 		replacement to current transformers in a reliable, minimal package• User-programmable overcurrent fault output reduces BOM• Excellent magnetic coupling in a coreless package design providing
best-in-class SNR and up to 5000 VRMS of galvanic isolation• Small packaging and full integration does not require 			shunts, enhancing reliability• Low resistance internal conductor allows for sensing up to 50 A
continuous current, lowering heat budgets and enabling higher power 		densities

Allegro’s 0 to 50 A sensors enable efficient and accuratecharging systems and DC-DC Converters, used in various
systems across EVs.
PartNumber

Measurement Range (A)Isolation Voltage(VRMS)

Bandwidth(kHz)

Vcc

Temperature
RangesPackages

Bidirectional,
Unidirectional
Bidirectional,
Unidirectional

ACS71240EX<±10, ±30, 50

1201203.3, 5K

QFN

ACS71240LC<±10, ±30, ±45, 50

24001203.3, 5L

SOIC

Bidirectional,
Unidirectional

ACS37002MA±33, ±40, ±50, ±66, ±80, ±100, ±133, 33,40, 50, 66, 80, 100, 133

5000

400

3.3, 5K. L

SOIC

Bidirectional,
Unidirectional

ACS37002LA±10, ±12, ±15, ±20, ±25,±30, ±37.5, ±50,25, 30, 37.5, 50

3600

400

3.3, 5L

SOIC

Bidirectional,
Unidirectional

ACS37002MC±33.3, ±40, ±50, ±66.7, ±80 ±100, ±108,±133.3, ±135, ±180, 33.3, 40, 50, 66.7

5000

4003.3, 5LSOICTypeThe current sensor IC families are innovative, monolithic,
isolated Hall-effect-based devices that provide a fully-integrated
solution in industry-leading, small-sized packages.

See figures 3,4 and 6 illustrations on back cover