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Coreless hall effect current sensor ic allegro acs37612lluatr010b5 for ac dc current sensing applications

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Coreless hall effect current sensor ic allegro acs37612lluatr010b5 for ac dc current sensing applications

Description : TSSOP-8 Current Sensors RoHS

Mfr. Part # : ACS37612LLUATR-010B5

Model Number : ACS37612LLUATR-010B5

Package : TSSOP-8

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Product Overview

The Allegro ACS37612 is a coreless, high-precision, Hall-effect current sensor IC designed for low-cost AC and DC current sensing solutions. It eliminates the need for external field concentrator cores or shields, making it ideal for applications with high currents flowing through busbars or PCB traces, up to hundreds of amps. The device features a differential sensing topology for excellent common-mode stray magnetic field rejection and high isolation due to its contactless nature. With bandwidth options of 120 kHz and 240 kHz, it is well-suited for demanding applications like inverter phase current sensing, load detection and management, power supplies, and DC/DC converters requiring fast switching and overcurrent fault detection. Its robust design, including a wide ambient operating temperature range (40C to 150C) and high ESD rating, makes it suitable for harsh automotive environments. The compact, low-profile 8-pin TSSOP package ensures suitability for space-constrained designs.

Product Attributes

Brand: Allegro
Package: 8-pin TSSOP (suffix LU)
Certifications: AEC-Q100 Grade 0, automotive qualified
Lead Material: Lead (Pb) free with 100% matte tin leadframe plating

Technical Specifications

Model/Part Number	Nominal Supply Voltage (V)	Differential Magnetic Input Range (G)	Sensitivity (Typ.) (mV/G)	Bandwidth (kHz)	Ambient Temperature Range (C)	Packing
ACS37612LLUATR-010B3	3.3	135	10	120	40 to 150	4000 pieces per 13-inch reel
ACS37612LLUATR-005B5	5	400	5	120	40 to 150
ACS37612LLUATR-010B5	5	200	10	120	40 to 150
ACS37612LLUATR-010B5-C	5	200	10	120	40 to 150
ACS37612LLUATR-015B5	5	130	15	120	40 to 150
ACS37612LLUATR-015U5	5	0 to 265	15	120	40 to 150

Key Features and Benefits

Eliminates the need for a concentrator core or shield.
Suitable for applications with current flowing through busbars or PCB traces.
Very wide sensing range (2.5 to 20 mV/G), ideal for sensing currents from <200 a to>1000 A.
Factory-programmed segmented linear temperature compensation provides low thermal drift (Sensitivity 1% typ, Offset 3 mV typ).
Differential Hall sensing rejects common-mode magnetic fields.
High operating bandwidth: DC to 240 kHz.
Contactless, lossless, and non-invasive current sensing.
Very fast response time (<2 s typ).
3.3 V or 5.0 V single supply operation.
Ratiometric output with unidirectional and bidirectional modes.
Immune to mechanical stress.
Monolithic Hall IC for high reliability.
Wide ambient temperature range: 40C to 150C.
Surface mount, small footprint, low-profile TSSOP8 package.

Typical Applications

High voltage traction motor inverters
48 V / 12 V auxiliary inverters
Battery monitoring
Overcurrent detection
DC/DC converters
Smart fuses
Power distribution units (PDUs)
Power supplies

Electrical Characteristics (Selected)

Characteristic	Symbol	Test Conditions	Min.	Typ.	Max.	Unit
Supply Voltage (5V variant)	VCC		4.5	5	5.5	V
Supply Voltage (3.3V variant)	VCC		3	3.3	3.6	V
Supply Current	ICC	VCC(min) VCC VCC(max), no load		12	16	mA
Power-On Time	tPO	TA = 25C		70		s
Internal Bandwidth (lowest mode)	BWi	CL = 1 nF		120		kHz
Internal Bandwidth (highest mode)	BWi	CL = 1 nF		240		kHz
Response Time (120 kHz BW)	tRESPONSE	CL = 1 nF		3.2		s
Response Time (240 kHz BW)	tRESPONSE	CL = 1 nF		1.6		s

Accuracy Performance (ACS37612LLUATR-005B5)

Characteristic	Symbol	Test Conditions	Min.	Typ.	Max.	Unit
Differential Magnetic Range	BDIFF		400		400	G
Sensitivity Error	ESENS	TA = 25C	2	1	2	%
Sensitivity Drift Over Temperature (40C to 25C)	SensTC		2	1	2	%
Sensitivity Drift Over Temperature (25C to 150C)	SensTC		2	1	2	%
Factory Quiescent Voltage Output Error	VOE	TA = 25C	5	3	5	mV

Accuracy Performance (ACS37612LLUATR-010B3)

Characteristic	Symbol	Test Conditions	Min.	Typ.	Max.	Unit
Differential Magnetic Range	BDIFF		135		135	G
Sensitivity Error	ESENS	TA = 25C	2	1	2	%
Sensitivity Drift Over Temperature (40C to 25C)	SensTC		2	1	2	%
Sensitivity Drift Over Temperature (25C to 150C)	SensTC		2	1	2	%
Factory Quiescent Voltage Output Error	VOE	TA = 25C	5	3	5	mV

Package Outline Drawing

Package: LU, 8-Pin TSSOP

Dimensions: (Refer to Figure 25 in source document for detailed drawing)

Body dimensions: 6.40 mm BSC (max) x 4.40 mm 0.10 mm
Pitch: 0.65 mm BSC (8x)
Lead thickness: 0.10 mm to 0.25 mm
Active Area Depth: 0.36 mm REF

2312081751_ALLEGRO-ACS37612LLUATR-010B5_C19626907.pdf

Coreless hall effect current sensor ic allegro acs37612lluatr010b5 for ac dc current sensing applications Images

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