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Current Sensor Module Allegro ACS772LCB-100B-SMT-T for Load Detection and DC to DC Converter Control

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Current Sensor Module Allegro ACS772LCB-100B-SMT-T for Load Detection and DC to DC Converter Control

working temperature : -40℃~+150℃

Current Range : ±100A

Voltage - Supply : 5V

Band Width : 200kHz

Current Terminal Resistance : 0.1mΩ

Response Time (tr) : 2.5us

Sensitivity : 20mV/A

Bidirectional Current Detection : Support

Description : ±100A 20mV/A CB-5 Current Sensors RoHS

Mfr. Part # : ACS772LCB-100B-SMT-T

Model Number : ACS772LCB-100B-SMT-T

Package : CB-5

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Product Overview

The Allegro ACS772 family of current sensor ICs offers economical and precise solutions for AC or DC current sensing. Ideal for motor control, load detection and management, power supply and DC-to-DC converter control, and inverter control, these sensors provide a 2.5 s response time for overcurrent fault detection in safety-critical applications. They utilize a precision, low-offset linear Hall circuit with a copper conduction path to generate a magnetic field, which is converted into a proportional voltage. Key features include factory calibration, proprietary digital temperature compensation for improved accuracy and stability, and integrated shield technology for high-level immunity to dV/dt and stray electric fields, ensuring low output voltage ripple and offset drift in high-voltage applications. The devices offer reinforced galvanic isolation, simplifying high-side current sensing in high-voltage systems.

Product Attributes

Brand: Allegro
Certifications: AEC-Q100 Grade 1 qualified, UL60950-1, UL62368-1
Material: Lead (Pb) free, 100% matte tin plating, oxygen-free copper leadframe
Package Type: 5-pin package (suffix CB)

Technical Specifications

Model	Primary Sampled Current (IP)	Sensitivity (Typ.)	Nominal Temperature Range	Output Directionality
ACS772LCB-050U-PFF-T	50 A	80 mV/A	40 to 150 C	Unidirectional
ACS772LCB-050B-PFF-T	50 A	40 mV/A	40 to 150 C	Bidirectional
ACS772LCB-100U-PFF-T	100 A	40 mV/A	40 to 150 C	Unidirectional
ACS772LCB-100B-PFF-T	100 A	20 mV/A	40 to 150 C	Bidirectional
ACS772KCB-150U-PFF-T	150 A	26.66 mV/A	40 to 125 C	Unidirectional
ACS772KCB-150B-PFF-T	150 A	13.33 mV/A	40 to 125 C	Bidirectional
ACS772ECB-200U-PFF-T	200 A	20 mV/A	40 to 85 C	Unidirectional
ACS772ECB-200B-PFF-T	200 A	10 mV/A	40 to 85 C	Bidirectional
ACS772ECB-250U-PFF-T	250 A	16 mV/A	40 to 85 C	Unidirectional
ACS772ECB-250B-PFF-T	250 A	8 mV/A	40 to 85 C	Bidirectional
ACS772ECB-300B-PFF-T	300 A	6.66 mV/A	40 to 85 C	Bidirectional
ACS772ECB-400U-PSF-T	400 A	10 mV/A	40 to 85 C	Unidirectional
ACS772ECB-400B-PFF-T	400 A	5 mV/A	40 to 85 C	Bidirectional

Characteristic	Symbol	Conditions	Min.	Typ.	Max.	Unit
Supply Voltage	VCC		4.5	5	5.5	V
Supply Current	ICC	VCC = 5 V, no load on output		10	15	mA
Power-On Delay	tPOD	TA = 25C		64		s
Response Time	tRESPONSE	TA = 25C, CL = 0.47 nF		2.5		s
Internal Bandwidth	BWi	Small signal 3 dB, CL = 0.47 nF		200		kHz
Primary Conductor Resistance	RPRIMARY	TA = 25C		100
Dielectric Strength Test Voltage	VISO	Agency type-tested for 60 seconds per UL standard 62368-1, 2nd Edition. Tested at 4320 VRMS for 1 second in production.		4800		VRMS
Dielectric Surge Strength Test Voltage	VSURGE	Tested 5 pulses at 2/minute in compliance to IEC 61000-4-5 1.2 s (rise) / 50 s (width)		8000		V
Working Voltage for Basic Isolation	VWVBI	For basic (single) isolation per UL standard 62368-1, 2nd Edition		1358 VPK or VDC / 960 VRMS		V
Working Voltage for Reinforced Isolation	VWFRI	For reinforced (double) isolation per UL standard 62368-1, 2nd Edition		672 VPK or VDC / 475 VRMS		V
Clearance	Dcl	Minimum distance through air from IP leads to signal leads		6.8		mm
Creepage	Dcr	Minimum distance along package body from IP leads to signal leads		6.8		mm
Distance Through Insulation	DTI	Minimum internal distance through insulation		0.47		mm
Comparative Tracking Index	CTI	Material Group II		400 to 599		V
Package Thermal Resistance	RJA	Mounted on the Allegro evaluation board with 2800 mm2 (1400 mm2 on component side and 1400 mm2 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.		7		C/W

2401220954_ALLEGRO-ACS772LCB-100B-SMT-T_C19762006.pdf

Current Sensor Module Allegro ACS772LCB-100B-SMT-T for Load Detection and DC to DC Converter Control Images

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