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Current sensor IC Allegro ACS72981ELRATR-200B3 offering precise AC DC current measurement and noise immunity

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Current sensor IC Allegro ACS72981ELRATR-200B3 offering precise AC DC current measurement and noise immunity

working temperature : -40℃~+85℃

Current Range : ±200A

Voltage - Supply : 3.3V

Current Terminal Resistance : 0.2mΩ

Band Width : 250kHz

Response Time (tr) : 1.8us

Sensitivity : 6.6mV/A

Bidirectional Current Detection : Support

Description : ±200A 6.6mV/A Current Sensors RoHS

Mfr. Part # : ACS72981ELRATR-200B3

Model Number : ACS72981ELRATR-200B3

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Product Overview

The Allegro ACS72981 family of current sensor ICs offers economical and precise AC or DC current sensing solutions. Featuring a 250 kHz bandwidth, these sensors are ideal for motor control, load detection and management, power supply and DC-to-DC converter control, and inverter control applications. With a response time of less than 2 s, they enable overcurrent fault detection in safety-critical systems. The device utilizes a precision, low-offset linear Hall circuit with an integrated copper conduction path. Applied current generates a magnetic field, which the Hall IC converts into a proportional voltage. Proprietary digital temperature compensation ensures accuracy over temperature and lifetime, greatly improving zero output voltage and output sensitivity. The internal 200 typical resistance of the conductive path minimizes power loss and enhances power density. Differential sensing techniques virtually eliminate output disturbance from common-mode magnetic fields.

Product Attributes

Brand: Allegro
Certifications: AEC-Q100 automotive qualification
Material: Lead (Pb) free; 100% matte tin plating; oxygen-free copper leadframe
Package Type: 7-pin PSOF package (suffix LR)

Technical Specifications

Model	Primary Sampled Current (IP)	Sensitivity (Sens Typ.) (mV/A)	Nominal Supply Voltage (V)	Operating Temperature Range (C)
ACS72981LLRATR-050B3	50 A	26.4	3.3	40 to 150
ACS72981LLRATR-050B5	50 A	40	5	40 to 150
ACS72981LLRATR-050U3	50 A	52.8	3.3	40 to 150
ACS72981LLRATR-050U5	50 A	80	5	40 to 150
ACS72981LLRATR-100B3	100 A	13.2	3.3	40 to 150
ACS72981LLRATR-100B5	100 A	20	5	40 to 150
ACS72981LLRATR-100U3	100 A	26.4	3.3	40 to 150
ACS72981LLRATR-100U5	100 A	40	5	40 to 150
ACS72981KLRATR-150B3	150 A	8.8	3.3	40 to 125
ACS72981KLRATR-150B5	150 A	13.33	5	40 to 125
ACS72981KLRATR-150U3	150 A	17.6	3.3	40 to 125
ACS72981KLRATR-150U5	150 A	26.66	5	40 to 125
ACS72981ELRATR-200B3	200 A	6.6	3.3	40 to 85
ACS72981ELRATR-200B5	200 A	10	5	40 to 85
ACS72981ELRATR-200U3	200 A	13.2	3.3	40 to 85
Key Performance Characteristics:
Bandwidth	250 kHz
Response Time	< 2 s
Primary Conductor Resistance	200 typical
Supply Voltage Operation	3.3 V and 5 V
Maximum Continuous Current (ICMAX)	120 A (TA = 25C)
Maximum Junction Temperature (TJ(max))	165 C
Package Thermal Resistance (RJA)	18 C/W (Mounted on Allegro evaluation board)
ESD Rating (HBM)	12 kV (Per AEC-Q100)
ESD Rating (CDM)	1 kV (Per AEC-Q100)
Supply Current (ICC)	14 mA typical (no load on output)
Power-On Delay (tPO)	70 s typical (TA = 25C)
Rise Time (tr)	1.5 s typical (CL = 1 nF, 1 V step)
Propagation Delay (tpd)	1 s typical (CL = 1 nF, 1 V step)
Response Time (tRESPONSE)	1.8 s typical (CL = 1 nF, 1 V step)
Output Slew Rate (SR)	0.53 V/s typical (CL = 1 nF, 1 V step)
Zero-Current Output Voltage (VIOUT(Q))	VCC / 2 (Bidirectional), VCC / 10 (Unidirectional)

2508151349_ALLEGRO-ACS72981ELRATR-200B3_C26551786.pdf

Current sensor IC Allegro ACS72981ELRATR-200B3 offering precise AC DC current measurement and noise immunity Images

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