ACS773 High Accuracy, Hall-Effect-Based, 200 kHz Bandwidth, Galvanically Isolated Current Sensor IC with 100 Current Conductor FEATURES AND BENEFITS DESCRIPTION * * * * * The AllegroTM ACS773 family of current sensor ICs provide 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. The 2.5 s response time enables overcurrent fault detection in safety-critical applications. * * * * * * * * * AEC-Q100 Grade 1 qualified Typical of 2.5 s output response time 3.3 V supply operation Ultra-low power loss: 100 internal conductor resistance Reinforced galvanic isolation allows use in economical, high-side current sensing in high-voltage systems 4800 Vrms dielectric strength certified under UL60950-1 Industry-leading noise performance with greatly improved bandwidth through proprietary amplifier and filter design techniques Integrated shield greatly reduces capacitive coupling from current conductor to die due to high dV/dt signals, and prevents offset drift in high-side, high-voltage applications Greatly improved total output error through digitally programmed and compensated gain and offset over the full operating temperature range Small package size, with easy mounting capability Monolithic Hall IC for high reliability Output voltage proportional to AC or DC currents Factory-trimmed for accuracy Extremely stable output offset voltage CB Certificate Number: US-29755-UL PACKAGE: 5-pin package (suffix CB) The device consists of a precision, low-offset linear Hall circuit with a copper conduction path located near the die. Applied current flowing through this copper conduction path generates a magnetic field which the Hall IC converts into a proportional voltage. Device accuracy is optimized through the close proximity of the magnetic signal to the Hall transducer. A precise, proportional output voltage is provided by the low-offset, chopper-stabilized BiCMOS Hall IC, which is programmed for accuracy at the factory. Proprietary digital temperature compensation technology greatly improves the IC accuracy and temperature stability. High-level immunity to current conductor dV/dt and stray electric fields is offered by Allegro proprietary integrated shield technology for low output voltage ripple and low offset drift in high-side, high-voltage applications. The output of the device increases when an increasing current flows through the primary copper conduction path (from terminal 4 to terminal 5), which is the path used for current sampling. The internal resistance of this conductive path is 100 typical, providing low power loss. The thickness of the copper conductor allows survival of the device at high overcurrent conditions. The terminals of the conductive path are electrically isolated from the signal leads (pins 1 through 3). This allows the ACS773 family of sensor PFF Leadform PSF Leadform Continued on the next page... Not to scale 3.3 V 1 CBYP 0.1 F Application 1: the ACS773 outputs an analog signal, VOUT , that varies linearly with the bidirectional AC or DC primary sensed current, IP , within the range specified. RF and CF are for optimal noise management, with values that depend on the application. 2 VCC IP- ACS773 IP GND CF VOUT 3 RF 5 VIOUT IP+ 4 Typical Application ACS773-DS, Rev. 6 MCO-0000364 June 27, 2019 High Accuracy, Hall-Effect-Based, 200 kHz Bandwidth, Galvanically Isolated Current Sensor IC with 100 Current Conductor ACS773 DESCRIPTION (continued) ICs to be used in applications requiring electrical isolation without the use of opto-isolators or other costly isolation techniques. The device is fully calibrated prior to shipment from the factory. The ACS773 family is lead (Pb) free. All leads are plated with 100% matte tin, and there is no Pb inside the package. The heavy gauge leadframe is made of oxygen-free copper. SELECTION GUIDE Package Sensitivity Sens (Typ.) (mV/A) [2] Terminals Signal Pins Primary Sampled Current , IP (A) ACS773LCB-050B-PFF-T Formed Formed 50 26.4 ACS773LCB-100B-PFF-T Formed Formed 100 13.2 ACS773KCB-150B-PFF-T Formed Formed 150 8.8 ACS773ECB-200B-PFF-T Formed Formed 200 6.6 ACS773ECB-250U-PSF-T Straight Formed 250 10.56 Part Number [1] Nominal TA [3] (C) Packing [4] -40 to 150 -40 to 125 34 pieces per tube -40 to 85 [1] Additional leadform options available for qualified volumes. Measured at VCC = 3.3 V. [3] All ACS773 devices are production tested and guaranteed to T = 150C, provided the Maximum Junction Temperature, T A J(MAX), is not exceeded. See Absolute Maximum Ratings and Thermal Application section of this datasheet for more information. [4] Contact Allegro for additional packing options. [2] ACS 773 L CB - 050 B - PFF - T Lead (Pb) Free Lead Form Output Directionality: B - Bidirectional (positive and negative current) U - Unidirectional (only positive current) Current Sensing Range (A) Package Designator Operating Temperature Range 3 Digit Part Number Allegro Current Sensor Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 2 High Accuracy, Hall-Effect-Based, 200 kHz Bandwidth, Galvanically Isolated Current Sensor IC with 100 Current Conductor ACS773 ABSOLUTE MAXIMUM RATINGS Characteristic Symbol Rating Unit VCC 6.5 V Reverse Supply Voltage VRCC -0.5 V Output Voltage VIOUT 6.5 V Supply Voltage Reverse Output Voltage VRIOUT Output Source Current IOUT(Source) Output Sink Current IOUT(Sink) Operating Ambient Temperature [1] TA Maximum Junction Temperature Storage Temperature Notes VIOUT to GND Minimum pull-up resistor of 500 from VCC to VIOUT Range E, K, and L -0.5 V 3 mA 10 mA -40 to 150 C TJ(max) 165 C Tstg -65 to 165 C [1] All ACS773 devices are production tested and guaranteed to TA = 150C, provided the Maximum Junction Temperature, TJ(MAX), is not exceeded. See Thermal Application section of this datasheet for more information. ISOLATION CHARACTERISTICS Characteristic Symbol Notes Rating Unit VSURGE Tested 5 pulses at 2/minute in compliance to IEC 61000-4-5 1.2 s (rise) / 50 s (width) 8000 V Dielectric Strength Test Voltage [2] VISO Agency type-tested for 60 seconds per UL standard 60950-1, 2nd Edition. Tested at 3000 VRMS for 1 second in production. 4800 VRMS Working Voltage for Basic Isolation VWVBI For basic (single) isolation per UL standard 60950-1, 2nd Edition Working Voltage for Reinforced Isolation VWFRI For reinforced (double) isolation per UL standard 609501, 2nd Edition Dielectric Surge Strength Test Voltage [2] Allegro 990 VPK or VDC 700 VRMS 636 VPK or VDC 450 VRMS does not conduct 60-second testing. It is done only during the UL certification process. THERMAL CHARACTERISTICS: May require derating at maximum conditions Characteristic Package Thermal Resistance [3] Additional Symbol Test Conditions [3] Value Unit 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 Rating Unit thermal information available on the Allegro website TYPICAL OVERCURRENT CAPABILITIES [4][5] Characteristic Overcurrent Symbol IPOC Notes TA = 25C, current is on for 1 second and off for 99 seconds, 100 pulses applied 1200 A TA = 85C, current is on for 1 second and off for 99 seconds, 100 pulses applied 900 A TA = 150C, current is on for 1 second and off for 99 seconds, 100 pulses applied 600 A [4] Test [5] For was done with Allegro evaluation board. The maximum allowed current is limited by TJ(max) only. more overcurrent profiles, please see FAQ on the Allegro website, www.allegromicro.com. Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 3 High Accuracy, Hall-Effect-Based, 200 kHz Bandwidth, Galvanically Isolated Current Sensor IC with 100 Current Conductor ACS773 IP+ VCC To all subcircuits Programming Control Charge Pump Pulse Generator Temperature Sensor EEPROM and Control Logic Sensitivity Control Active Temperature Compensation Dynamic Offset Cancellation C BYPASS Undervoltage Detection Offset Control Output Clamps VIOUT Signal Recovery CL GND IP- Functional Block Diagram VCC 1 GND 2 VIOUT 3 5 IP- 4 IP+ Pinout Diagram Terminal List Table Number Name 1 VCC Description Device power supply terminal 2 GND 3 VIOUT Signal ground terminal 4 IP+ Terminal for current being sampled 5 IP- Terminal for current being sampled Analog output signal Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 4 ACS773 High Accuracy, Hall-Effect-Based, 200 kHz Bandwidth, Galvanically Isolated Current Sensor IC with 100 Current Conductor COMMON OPERATING CHARACTERISTICS: Valid at TA = -40C to 150C, CBYP = 0.1 F, and VCC = 3.3 V, unless otherwise specified Characteristic Symbol Test Conditions Min. Typ. Max. Unit 3 3.3 3.6 V - 10 15 mA ELECTRICAL CHARACTERISTICS Supply Voltage VCC Supply Current ICC VCC 5 V, no load on output tPOD Power-On Delay Power-On Reset Voltage POR Hysteresis TA = 25C - 64 - s VPORH VCC rising at 1 V/ms - 2.9 - V VPORL VCC falling at 1 V/ms - 2.5 - V 250 - - mV Small signal -3 dB, CL = 4.7 nF - 200 - kHz IP step = 50% of IP+, 10% to 90% rise time, TA = 25C, COUT = 470 pF - 2.4 - s tPROP TA = 25C, CL = 470 pF, IP step = 50% of IP+ - 1.2 - s tRESPONSE TA = 25C, CL = 470 pF, IP step = 50% of IP+, 90% input to 90% output - 2.5 - s TA = 25C - 3.3 - k VHYS(POR) Internal Bandwidth Rise Time BWi tr Propagation Delay Time Response Time DC Output Impedance ROUT Output Load Resistance RLOAD(MIN) VIOUT to GND, VIOUT to VCC 4.7 - - Output Load Capacitance CLOAD(MAX) VIOUT to GND - 1 10 nF RPRIMARY TA = 25C - 100 - VSAT(HIGH) TA = 25C, RL(PULLDWN) = 10 k to GND VCC - 0.2 - - V VSAT(LOW) TA = 25C, RL(PULLUP) = 10 k to VCC - - 200 mV QVO Ratiometry Error [1] RatERRQVO VCC = 3.15 to 3.45 V - 0.15 - % Error [1] RatERRSens VCC = 3.15 to 3.45 V - 0.3 - % Input referenced noise density; TA = 25C, CL = 1 nF - 0.2 - mA/ (Hz) Primary Conductor Resistance Output Saturation Voltage ERROR COMPONENTS Sens Ratiometry Noise IN - 120 - mARMS Nonlinearity [1] ELIN Up to full scale of IP -0.9 0.5 0.9 % Symmetry [1] ESYM Over half-scale IP -0.8 0.4 0.8 % [1] Input referenced noise at 200 kHz; TA = 25C, CL = 1 nF See Characteristic Definitions section of this datasheet. Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 5 ACS773 High Accuracy, Hall-Effect-Based, 200 kHz Bandwidth, Galvanically Isolated Current Sensor IC with 100 Current Conductor X050B PERFORMANCE CHARACTERISTICS: TA = -40C to 150C [1], VCC = 3.3 V, unless otherwise specified Characteristic Symbol Typ.[2] Max. Unit -50 - 50 A IPR(min) < IP < IPR(max) - 26.4 x VCC / 3.3 - mV/A Bidirection; IP = 0 A - VCC/2 - V TA = 25C, CL = 1 nF - 19.2 - mVp-p Test Conditions Min. NOMINAL PERFORMANCE Current Sensing Range Sensitivity Zero Current Output Voltage IPR Sens VIOUT(Q) ACCURACY PERFORMANCE Noise Sensitivity Error VN ESens VOE(TA) Electrical Offset Error Magnetic Offset Error Total Output Error TA = 25C, CL = 1 nF - 3.2 - mVRMS Full scale of IP, TA = 25C -1 0.5 1 % % Full scale of IP, TA = 25C to 150C -1.25 1 1.25 Full scale of IP, TA = -40C to 25C -3.5 1.5 3.5 % -8 4 8 mV IP = 0 A, TA = 25C VOE(TA)HT IP = 0 A, TA = 25C to 150C -8 4 8 mV VOE(TA)LT IP = 0 A, TA = -40C to 25C -20 6 20 mV IERROM IP = 0 A, TA = 25C, after excursion of IPR(max) - 210 250 mA ETOT(HT) Full scale of IP, TA = 25C to 150C -1.5 1 1.5 % ETOT(LT) Full scale of IP, TA = -40C to 25C -3.5 1.5 3.5 % ESens(LIFE)(HT) TA = 25C to 150C -2.1 1.6 2.1 % ESens(LIFE)(LT) TA = -40C to 25C -3.5 2.5 3.5 % ETOT(LIFE)(HT) TA = 25C to 150C -2.1 1.7 2.1 % ETOT(LIFE)(LT) TA = -40C to 25C -3.5 2.6 3.5 % EOFF(LIFE)(HT) TA = 25C to 150C -10 7 10 mV EOFF(LIFE)(LT) TA = -40C to 25C -20 8.9 20 mV LIFETIME ACCURACY CHARACTERISTICS [3] Sensitivity Error Including Lifetime Total Output Error Including Lifetime Electric Offset Error Including Lifetime [1] All ACS773 devices are production tested and guaranteed to TA = 150C, provided the Maximum Junction Temperature, TJ(MAX), is not exceeded. See Absolute Maximum Ratings and Thermal Application section of this datasheet for more information. [2] Typical values are 3 sigma values. [3] Min/max limits are derived from AEC-Q100 Grade 1 testing. Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 6 ACS773 High Accuracy, Hall-Effect-Based, 200 kHz Bandwidth, Galvanically Isolated Current Sensor IC with 100 Current Conductor X100B PERFORMANCE CHARACTERISTICS: TA = -40C to 150C [1], VCC = 3.3 V, unless otherwise specified Characteristic Symbol Typ.[2] Max. Unit -100 - 100 A IPR(min) < IP < IPR(max) - 13.2 x VCC / 3.3 - mV/A Bidirection; IP = 0 A - VCC/2 - V TA = 25C, CL = 1 nF - 9.6 - mVp-p Test Conditions Min. NOMINAL PERFORMANCE Current Sensing Range Sensitivity Zero Current Output Voltage IPR Sens VIOUT(Q) ACCURACY PERFORMANCE Noise Sensitivity Error VN ESens VOE(TA) Electrical Offset Error Magnetic Offset Error Total Output Error TA = 25C, CL = 1 nF - 1.6 - mVRMS Full scale of IP, TA = 25C -1 0.5 1 % % Full scale of IP, TA = 25C to 150C -1.25 1 1.25 Full scale of IP, TA = -40C to 25C -3.5 1.5 3.5 % -8 4 8 mV IP = 0 A, TA = 25C VOE(TA)HT IP = 0 A, TA = 25C to 150C -8 4 8 mV VOE(TA)LT IP = 0 A, TA = -40C to 25C -20 6 20 mV IERROM IP = 0 A, TA = 25C, after excursion of IPR(max) - 280 400 mA ETOT(HT) Full scale of IP, TA = 25C to 150C -1.5 1 1.5 % ETOT(LT) Full scale of IP, TA = -40C to 25C -3.5 1.5 3.5 % ESens(LIFE)(HT) TA = 25C to 150C -2.1 1.6 2.1 % ESens(LIFE)(LT) TA = -40C to 25C -3.5 2.5 3.5 % ETOT(LIFE)(HT) TA = 25C to 150C -2.1 1.7 2.1 % ETOT(LIFE)(LT) TA = -40C to 25C -3.5 2.6 3.5 % EOFF(LIFE)(HT) TA = 25C to 150C -10 7 10 mV EOFF(LIFE)(LT) TA = -40C to 25C -20 8.9 20 mV LIFETIME ACCURACY CHARACTERISTICS [3] Sensitivity Error Including Lifetime Total Output Error Including Lifetime Electric Offset Error Including Lifetime [1] All ACS773 devices are production tested and guaranteed to TA = 150C, provided the Maximum Junction Temperature, TJ(MAX), is not exceeded. See Absolute Maximum Ratings and Thermal Application section of this datasheet for more information. [2] Typical values are 3 sigma values. [3] Min/max limits are derived from AEC-Q100 Grade 1 testing. Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 7 ACS773 High Accuracy, Hall-Effect-Based, 200 kHz Bandwidth, Galvanically Isolated Current Sensor IC with 100 Current Conductor X150B PERFORMANCE CHARACTERISTICS: TA = -40C to 150C [1], VCC = 3.3 V, unless otherwise specified Characteristic Symbol Typ.[2] Max. Unit -150 - 150 A IPR(min) < IP < IPR(max) - 8.8 x VCC / 3.3 - mV/A Bidirection; IP = 0 A - VCC/2 - V TA = 25C, CL = 1 nF - 9.6 - mVp-p mVRMS Test Conditions Min. NOMINAL PERFORMANCE Current Sensing Range Sensitivity Zero Current Output Voltage IPR Sens VIOUT(Q) ACCURACY PERFORMANCE Noise Sensitivity Error VN ESens VOE(TA) Electrical Offset Error Magnetic Offset Error Total Output Error TA = 25C, CL = 1 nF - 1.6 - Full scale of IP, TA = 25C -1 0.7 1 % Full scale of IP, TA = 25C to 150C -1.25 0.8 1.25 % Full scale of IP, TA = -40C to 25C -3.5 1.7 3.5 % -8 4 8 mV IP = 0 A, TA = 25C VOE(TA)HT IP = 0 A, TA = 25C to 150C -8 4 8 mV VOE(TA)LT IP = 0 A, TA = -40C to 25C -20 6 20 mV IERROM IP = 0 A, TA = 25C, after excursion of IPR(max) - 280 450 mA ETOT(HT) Full scale of IP, TA = 25C to 150C -1.5 0.9 1.5 % ETOT(LT) Full scale of IP, TA = -40C to 25C -3.5 1.7 3.5 % ESens(LIFE)(HT) TA = 25C to 150C -2.1 1.6 2.1 % ESens(LIFE)(LT) TA = -40C to 25C -3.5 2.5 3.5 % ETOT(LIFE)(HT) TA = 25C to 150C -2.1 1.7 2.1 % LIFETIME ACCURACY CHARACTERISTICS [3] Sensitivity Error Including Lifetime Total Output Error Including Lifetime Electric Offset Error Including Lifetime ETOT(LIFE)(LT) TA = -40C to 25C -3.5 2.6 3.5 % EOFF(LIFE)(HT) TA = 25C to 150C -10 7 10 mV EOFF(LIFE)(LT) TA = -40C to 25C -20 8.9 20 mV [1] All ACS773 devices are production tested and guaranteed to TA = 150C, provided the Maximum Junction Temperature, TJ(MAX), is not exceeded. See Absolute Maximum Ratings and Thermal Application section of this datasheet for more information. [2] Typical values are 3 sigma values. [3] Min/max limits are derived from AEC-Q100 Grade 1 testing. Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 8 ACS773 High Accuracy, Hall-Effect-Based, 200 kHz Bandwidth, Galvanically Isolated Current Sensor IC with 100 Current Conductor X200B PERFORMANCE CHARACTERISTICS: TA = -40C to 150C [1], VCC = 3.3 V, unless otherwise specified Characteristic Symbol Typ.[2] Max. Unit -200 - 200 A IPR(min) < IP < IPR(max) - 6.6 x VCC / 3.3 - mV/A Bidirection; IP = 0 A - VCC/2 - V TA = 25C, CL = 1 nF - 4.8 - mVp-p Test Conditions Min. NOMINAL PERFORMANCE Current Sensing Range Sensitivity Zero Current Output Voltage IPR Sens VIOUT(Q) ACCURACY PERFORMANCE Noise Sensitivity Error VN ESens Magnetic Offset Error Total Output Error - 0.8 - mVRMS Full scale of IP, TA = 25C -1 0.5 1 % Full scale of IP, TA = 25C to 150C -1.25 1 1.25 % Full scale of IP, TA = -40C to 25C -3.5 1.5 3.5 % mV IP = 0 A, TA = 25C -8 4 8 VOE(TA)HT IP = 0 A, TA = 25C to 150C -8 4 8 mV VOE(TA)LT IP = 0 A, TA = -40C to 25C -20 6 20 mV VOE(TA) Electrical Offset Error TA = 25C, CL = 1 nF IERROM IP = 0 A, TA = 25C, after excursion of IPR(max) - 380 450 mA ETOT(HT) Full scale of IP, TA = 25C to 150C -1.5 1 1.5 % ETOT(LT) Full scale of IP, TA = -40C to 25C -3.5 1.5 3.5 % ESens(LIFE)(HT) TA = 25C to 150C -2.1 1.6 2.1 % ESens(LIFE)(LT) TA = -40C to 25C -3.5 2.5 3.5 % ETOT(LIFE)(HT) TA = 25C to 150C -2.1 1.7 2.1 % ETOT(LIFE)(LT) TA = -40C to 25C -3.5 2.6 3.5 % EOFF(LIFE)(HT) TA = 25C to 150C -10 7 10 mV EOFF(LIFE)(LT) TA = -40C to 25C -20 8.9 20 mV LIFETIME ACCURACY CHARACTERISTICS [3] Sensitivity Error Including Lifetime Total Output Error Including Lifetime Electric Offset Error Including Lifetime [1] All ACS773 devices are production tested and guaranteed to TA = 150C, provided the Maximum Junction Temperature, TJ(MAX), is not exceeded. See Absolute Maximum Ratings and Thermal Application section of this datasheet for more information. Typical values are 3 sigma values. [3] Min/max limits are derived from AEC-Q100 Grade 1 testing. [2] Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 9 ACS773 High Accuracy, Hall-Effect-Based, 200 kHz Bandwidth, Galvanically Isolated Current Sensor IC with 100 Current Conductor X250U PERFORMANCE CHARACTERISTICS: TA = -40C to 150C [1], VCC = 3.3 V, unless otherwise specified Characteristic Symbol Typ.[2] Max. Unit 0 - 250 A IPR(min) < IP < IPR(max) - 10.56 x VCC / 3.3 - mV/A Bidirection; IP = 0 A - VCC/10 - V TA = 25C, CL = 1 nF - 11.52 - mVp-p TA = 25C, CL = 1 nF - 1.28 - mVRMS Full scale of IP, TA = 25C -1 0.5 1 % Full scale of IP, TA = 25C to 150C -1.25 1 1.25 % Full scale of IP, TA = -40C to 25C -3.5 1.5 3.5 % -8 4 8 mV Test Conditions Min. NOMINAL PERFORMANCE Current Sensing Range Sensitivity Zero Current Output Voltage IPR Sens VIOUT(Q) ACCURACY PERFORMANCE Noise Sensitivity Error VN ESens VOE(TA) Electrical Offset Error Magnetic Offset Error Total Output Error IP = 0 A, TA = 25C VOE(TA)HT IP = 0 A, TA = 25C to 150C -8 4 8 mV VOE(TA)LT IP = 0 A, TA = -40C to 25C -20 6 20 mV IERROM IP = 0 A, TA = 25C, after excursion of IPR(max) - 380 450 mA ETOT(HT) Full scale of IP, TA = 25C to 150C -1.5 1 1.5 % ETOT(LT) Full scale of IP, TA = -40C to 25C -3.5 1.5 3.5 % ESens(LIFE)(HT) TA = 25C to 150C -2.1 1.6 2.1 % ESens(LIFE)(LT) TA = -40C to 25C -3.5 2.5 3.5 % ETOT(LIFE)(HT) TA = 25C to 150C -2.1 1.7 2.1 % LIFETIME ACCURACY CHARACTERISTICS [3] Sensitivity Error Including Lifetime Total Output Error Including Lifetime Electric Offset Error Including Lifetime ETOT(LIFE)(LT) TA = -40C to 25C -3.5 2.6 3.5 % EOFF(LIFE)(HT) TA = 25C to 150C -10 7 10 mV EOFF(LIFE)(LT) TA = -40C to 25C -20 8.9 20 mV [1] All ACS773 devices are production tested and guaranteed to TA = 150C, provided the Maximum Junction Temperature, TJ(MAX), is not exceeded. See Absolute Maximum Ratings and Thermal Application section of this datasheet for more information. [2] Typical values are 3 sigma values. [3] Min/max limits are derived from AEC-Q100 Grade 1 testing. Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 10 ACS773 High Accuracy, Hall-Effect-Based, 200 kHz Bandwidth, Galvanically Isolated Current Sensor IC with 100 Current Conductor CHARACTERISTIC PERFORMANCE DATA Response Time (tRESPONSE) 25 A excitation signal with 10%-90% rise time = 1 s Sensitivity = 26.4 mV/A, CBYPASS = 0.1 F, CLOAD = 1 nF Propagation Delay (tPROP) 25 A excitation signal with 10%-90% rise time = 1 s Sensitivity = 26.4 mV/A, CBYPASS = 0.1 F, CLOAD = 1 nF Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 11 ACS773 High Accuracy, Hall-Effect-Based, 200 kHz Bandwidth, Galvanically Isolated Current Sensor IC with 100 Current Conductor Rise Time (tr) 25 A excitation signal with 10%-90% rise time = 1 s Sensitivity = 26.4 mV/A, CBYPASS = 0.1 F, CLOAD = 1 nF Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 12 High Accuracy, Hall-Effect-Based, 200 kHz Bandwidth, Galvanically Isolated Current Sensor IC with 100 Current Conductor ACS773 CHARACTERISTIC PERFORMANCE ACS773LCB-050B-PFF-T Electrical Offset Voltage versus Ambient Temperature Sensitivity versus Ambient Temperature 8 26.8 6 26.7 26.6 Sens(mV/A) Voe(mV) 4 2 0 26.4 26.3 -4 26.2 26.1 -50 -25 0 25 50 75 100 125 Avg+3 26.5 -2 -6 Avg-3 Avg 150 -50 -25 0 25 Nonlinearity versus Ambient Temperature 2 0.8 1.5 100 125 Error(%) 0.4 0.2 -25 0 -1 0 25 50 75 100 125 -1.5 150 -50 -25 0 25 Ta() 50 75 100 125 150 Ta() Magnetic Offset Error versus Ambient Temperature 160 140 120 Ierrom(mA) -50 0.5 -0.5 Avg-3 Avg Avg+3 0 150 Avg-3 Avg Avg+3 1 0.6 Elin(%) 75 Total Output Error versus Ambient Temperature 1 -0.2 50 Ta() Ta() 100 80 60 Avg-3 Avg Avg+3 40 20 0 -50 -25 0 25 50 75 100 125 150 Ta() Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 13 High Accuracy, Hall-Effect-Based, 200 kHz Bandwidth, Galvanically Isolated Current Sensor IC with 100 Current Conductor ACS773 CHARACTERISTIC PERFORMANCE ACS773LCB-100B-PFF-T Electrical Offset Voltage versus Ambient Temperature Sensitivity versus Ambient Temperature 10 13.4 8 13.35 13.3 Sens(mV/A) Voe(mV) 6 4 2 13.25 13.2 13.15 0 -2 13.1 -4 13.05 -50 -25 0 25 50 75 100 125 150 -50 -25 0 25 Nonlinearity versus Ambient Temperature 100 125 150 125 150 Total Output Error versus Ambient Temperature 0.9 1.5 0.8 0.7 1 Error(%) 0.6 0.5 0.4 0.5 0 0.3 0.2 -0.5 0.1 -50 -25 0 25 50 75 100 125 -1 150 -50 -25 0 25 Ta() 50 75 100 Ta() Magnetic Offset Error versus Ambient Temperature 300 250 Ierrom(mA) Elin(%) 75 2 1 0 50 Ta() Ta() 200 150 100 50 0 -50 -25 0 25 50 75 100 125 150 Ta() Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 14 High Accuracy, Hall-Effect-Based, 200 kHz Bandwidth, Galvanically Isolated Current Sensor IC with 100 Current Conductor ACS773 CHARACTERISTIC PERFORMANCE ACS773KCB-150B-PFF-T Electrical Offset Voltage versus Ambient Temperature Sensitivity versus Ambient Temperature 9 6 8.95 4 Avg-3 Avg 8.9 Sens(mV/A) Voe(mV) 2 0 -2 Avg+3 8.85 8.8 8.75 8.7 -4 -6 8.65 8.6 -50 -25 0 25 50 75 100 125 150 -50 -25 0 25 75 100 125 150 Total Output Error versus Ambient Temperature 0.8 1.5 0.7 1 0.6 0.5 Error(%) 2 0.5 0.4 0.3 Avg-3 Avg Avg+3 0 -0.5 -1 Avg-3 Avg Avg+3 0.2 0.1 -50 -25 -1.5 -2 0 25 50 75 100 125 -2.5 150 -50 -25 0 25 Ta() 50 75 100 125 150 Ta() Magnetic Offset Error versus Ambient Temperature 350 300 250 Ierrom(mA) Elin(%) Nonlinearity versus Ambient Temperature 0.9 0 50 Ta() Ta() 200 150 100 Avg-3 Avg Avg+3 50 0 -50 -25 0 25 50 75 100 125 150 Ta() Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 15 High Accuracy, Hall-Effect-Based, 200 kHz Bandwidth, Galvanically Isolated Current Sensor IC with 100 Current Conductor ACS773 CHARACTERISTIC PERFORMANCE ACS773ECB-200B-PFF-T Electrical Offset Voltage versus Ambient Temperature Sensitivity versus Ambient Temperature 6.75 10 Avg-3 8 Avg Avg Avg+3 Sens(mV/A) Voe(mV) 6 Avg-3 6.7 4 2 Avg+3 6.65 6.6 0 6.55 -2 -4 6.5 -50 -25 0 25 50 75 100 125 150 -50 -25 0 25 Nonlinearity versus Ambient Temperature 3 0.6 2.5 100 125 Error(%) 0.4 0.3 0.2 -25 1 0.5 -0.5 0 25 50 75 100 125 -1 150 -50 -25 0 25 Ta() 50 75 100 125 150 Ta() Magnetic Offset Error versus Ambient Temperature 350 300 250 Ierrom(mA) -50 1.5 0 Avg-3 Avg Avg+3 0.1 150 Avg-3 Avg Avg+3 2 0.5 Elin(%) 75 Total Output Error versus Ambient Temperature 0.7 0 50 Ta() Ta() 200 150 100 Avg-3 Avg Avg+3 50 0 -50 -25 0 25 50 75 100 125 150 Ta() Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 16 High Accuracy, Hall-Effect-Based, 200 kHz Bandwidth, Galvanically Isolated Current Sensor IC with 100 Current Conductor ACS773 CHARACTERISTIC DEFINITIONS Definitions of Accuracy Characteristics SENSITIVITY (Sens) The change in sensor IC output in response to a 1 A change through the primary conductor. The sensitivity is the product of the magnetic circuit sensitivity (G / A; 1 G = 0.1 mT) and the linear IC amplifier gain (mV/G). The linear IC amplifier gain is programmed at the factory to optimize the sensitivity (mV/A) for the full-scale current of the device. SENSITIVITY ERROR (ESens) The sensitivity error is the percent difference between the measured sensitivity and the ideal sensitivity. For example, in the case of VCC = 3.3 V: ESens = SensMeas(3.3V) - SensIdeal(3.3V) SensIDEAL(3.3V) x 100 (%) NOISE (V N) The noise floor is derived from the thermal and shot noise observed in Hall elements. Dividing the noise (mV) by the sensitivity (mV/A) provides the smallest current that the device is able to resolve. NONLINEARITY (E LIN) The ACS773 is designed to provide a linear output in response to a ramping current. Consider two current levels: I1 and I2. Ideally, the sensitivity of a device is the same for both currents, for a given supply voltage and temperature. Nonlinearity is present when there is a difference between the sensitivities measured at I1 and I2. Nonlinearity is calculated separately for the positive (ELINpos ) and negative (ELINneg ) applied currents as follows: ELINpos = 100 (%) x {1 - (SensIPOS2 / SensIPOS1 ) } ELINneg = 100 (%) x {1 - (SensINEG2 / SensINEG1 )} where: SensIx = (VIOUT(Ix) - VIOUT(Q))/ Ix and IPOSx and INEGx are positive and negative currents. Then: ELIN = max( ELINpos , ELINneg ) SYMMETRY (E SYM) The degree to which the absolute voltage output from the IC var- ies in proportion to either a positive or negative half-scale primary current. The following equation is used to derive symmetry: 100 x ( VIOUT_+half-scale amperes - VIOUT(Q) VIOUT(Q) - VIOUT_-half-scale amperes ) RATIOMETRY ERROR The device features a ratiometric output. This means that the quiescent voltage output, VIOUTQ, and the magnetic sensitivity, Sens, are proportional to the supply voltage, VCC.The ratiometric change (%) in the quiescent voltage output is defined as: RatErrQVO = [ 1- ] (VIOUTQ(VCC) / VIOUTQ(3.3V)) x 100% VCC / 3.3 V and the ratiometric change (%) in sensitivity is defined as: [ RatErrSens = 1 - (Sens(VCC) / Sense(3.3V)) VCC / 3.3 V ] x 100% ZERO CURRENT OUTPUT VOLTAGE (VIOUT(Q)) The output of the sensor when the primary current is zero. It nominally remains at 0.5 x VCC for a bidirectional device and 0.1 x VCC for a unidirectional device. For example, in the case of a bidirectional output device, VCC = 3.3 V translates into VIOUT(Q) = 1.65 V. Variation in VIOUT(Q) can be attributed to the resolution of the Allegro linear IC quiescent voltage trim and thermal drift. ELECTRICAL OFFSET VOLTAGE (VOE) The deviation of the device output from its ideal quiescent value of 0.5 x VCC (bidirectional) or 0.1 x VCC (unidirectional) due to nonmagnetic causes. To convert this voltage to amperes, divide by the device sensitivity, Sens. MAGNETIC OFFSET ERROR (I ERROM) The magnetic offset is due to the residual magnetism (remnant field) of the core material. The magnetic offset error is highest when the magnetic circuit has been saturated, usually when the device has been subjected to a full-scale or high-current overload condition. The magnetic offset is largely dependent on the material used as a flux concentrator. The larger magnetic offsets are observed at the lower operating temperatures. Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 17 High Accuracy, Hall-Effect-Based, 200 kHz Bandwidth, Galvanically Isolated Current Sensor IC with 100 Current Conductor ACS773 TOTAL OUTPUT ERROR (E TOT) The difference between the current measurement from the sensor IC and the actual current (IP), relative to the actual current. This is equivalent to the difference between the ideal output voltage and the actual output voltage, divided by the ideal sensitivity, relative to the current flowing through the primary conduction path: VIOUT(IP) - VIOUT(ideal)(IP) x 100(%) ETOT(IP) = Sensideal x IP The Total Output Error incorporates all sources of error and is a function of IP. At relatively high currents, ETOT will be mostly due to sensitivity error, and at relatively low currents, ETOT will be mostly due to Offset Voltage (VOE). In fact, as IP approaches zero, ETOT approaches infinity due to the offset voltage. This is illustrated in Figure 1 and Figure 2. Figure 1 shows a distribution of output voltages versus IP at 25C and across temperature. Figure 2 shows the corresponding ETOT versus IP. where VIOUT(ideal)(IP) = VIOUT(Q) + (SensIDEAL x IP ) Increasing VIOUT (V) Accuracy Across Temperature Accuracy at 25C Only +ETOT Ideal VIOUT Accuracy Across Temperature Accuracy at 25C Only Across Temperature IPR(min) VIOUT(Q) 25C Only +IP (A) -IP (A) -IP Full Scale IP +IP IPR(max) 0A Accuracy at 25C Only Accuracy Across Temperature Decreasing VIOUT (V) Figure 1: Output Voltage versus Sensed Current -ETOT Figure 2: Total Output Error versus Sensed Current Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 18 High Accuracy, Hall-Effect-Based, 200 kHz Bandwidth, Galvanically Isolated Current Sensor IC with 100 Current Conductor ACS773 DEFINITIONS OF DYNAMIC RESPONSE CHARACTERISTICS POWER-ON DELAY (tPOD) When the supply is ramped to its operating voltage, the device requires a finite time to power its internal components before responding to an input magnetic field. Power-On Delay, tPOD, is defined as the time it takes for the output voltage to settle within 10% of its steady-state value under an applied magnetic field, after the power supply has reached its minimum specified operating voltage, VCC(min), as shown in the chart at right. V VCC VCC(typ) VIOUT 90% VIOUT VCC(min) t1 RISE TIME (tr) The time interval between a) when the sensor reaches 10% of its full-scale value, and b) when it reaches 90% of its full-scale value. t2= time at which output voltage settles within 10% of its steady-state value under an applied magnetic field The time interval between a) when the sensed current reaches 20% of its full-scale value, and b) when the sensor output reaches 20% of its full-scale value. The time interval between a) when the applied current reaches 90% of its final value, and b) when the sensor reaches 90% of its output corresponding to the applied current. tPOD t1= time at which power supply reaches minimum specified operating voltage PROPAGATION DELAY (tPROP) RESPONSE TIME (tRESPONSE) t2 0 +t Figure 3: Power-On Delay (tPOD) (%) 90 Primary Current VIOUT Rise Time, tr 20 10 0 Propagation Delay, tPROP t Figure 4: Rise Time (tr) and Propagation Delay (tPROP) (%) 90 Primary Current VIOUT Response Time, tRESPONSE 0 t Figure 5: Response Time (tRESPONSE) Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 19 High Accuracy, Hall-Effect-Based, 200 kHz Bandwidth, Galvanically Isolated Current Sensor IC with 100 Current Conductor ACS773 FUNCTIONAL DESCRIPTION Power-On Reset (POR) The descriptions in this section assume: temperature = 25C, no output load (RL, CL), and IP = 0 A. Power-Up At power-up, as VCC ramps up, the output is in a high-impedance state. When VCC crosses VPORH (location [1] in Figure 6 and [1] in Figure 7), the POR Release counter starts counting for tPO [2, 2]. At this point, the output will go to VCC/2. VCC 1 VCC drops below VCC(min) = 3 V If VCC drops below VPORH [3] but remains higher than VPORL [4], the output will continue to be VCC/2. Power-Down As VCC ramps down below VPORL [3, 5'], the output will enter a high-impedance state. 2 3 3.3 VPORH VPORL GND Time VOUT tPO 1.65 Slope = VCC / 2 GND High Impedance High Impedance Time Figure 6: POR: Slow Rise Time Case VCC 1' 2' 3' 4' 5' 3.3 VPORH VPORL GND VOUT 1.65 GND Time tPO Slope = VCC / 2 Slope = VCC / 2 High Impedance Figure 7: POR: Fast Rise Time Case High Impedance Time Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 20 ACS773 High Accuracy, Hall-Effect-Based, 200 kHz Bandwidth, Galvanically Isolated Current Sensor IC with 100 Current Conductor EEPROM Error Checking And Correction Hamming code methodology is implemented for EEPROM checking and correction. The device has ECC enabled after power-up. If an uncorrectable error has occurred, the VOUT pin will go to high impedance and the device will not respond to applied magnetic field. Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 21 ACS773 High Accuracy, Hall-Effect-Based, 200 kHz Bandwidth, Galvanically Isolated Current Sensor IC with 100 Current Conductor Chopper Stabilization Technique When using Hall-effect technology, a limiting factor for switchpoint accuracy is the small signal voltage developed across the Hall element. This voltage is disproportionally small relative to the offset that can be produced at the output of the Hall sensor IC. This makes it difficult to process the signal while maintaining an accurate, reliable output over the specified operating temperature and voltage ranges. Chopper stabilization is a unique approach used to minimize Hall offset on the chip. Allegro employs a technique to remove key sources of the output drift induced by thermal and mechanical stresses. This offset reduction technique is based on a signal modulation-demodulation process. The undesired offset signal is separated from the magnetic field-induced signal in the frequency domain, through modulation. The subsequent demodulation acts as a modulation process for the offset, causing the magnetic fieldinduced signal to recover its original spectrum at baseband, while the DC offset becomes a high-frequency signal. The magnetic- sourced signal then can pass through a low-pass filter, while the modulated DC offset is suppressed. In addition to the removal of the thermal and stress related offset, this novel technique also reduces the amount of thermal noise in the Hall sensor IC while completely removing the modulated residue resulting from the chopper operation. The chopper stabilization technique uses a high-frequency sampling clock. For demodulation process, a sample-and-hold technique is used. This high-frequency operation allows a greater sampling rate, which results in higher accuracy and faster signal-processing capability. This approach desensitizes the chip to the effects of thermal and mechanical stresses, and produces devices that have extremely stable quiescent Hall output voltages and precise recoverability after temperature cycling. This technique is made possible through the use of a BiCMOS process, which allows the use of low-offset, low-noise amplifiers in combination with high-density logic integration and sample-and-hold circuits. Regulator Clock/Logic Hall Element Amp Anti-Aliasing LP Filter Tuned Filter Figure 8: Concept of Chopper Stabilization Technique Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 22 ACS773 High Accuracy, Hall-Effect-Based, 200 kHz Bandwidth, Galvanically Isolated Current Sensor IC with 100 Current Conductor APPLICATION INFORMATION Thermal Rise vs. Primary Current ASEK773 Evaluation Board Layout Self-heating due to the flow of current should be considered during the design of any current sensing system. The sensor, printed circuit board (PCB), and contacts to the PCB will generate heat as current moves through the system. Thermal data shown in Figure 9 was collected using the ASEK773 Evaluation Board (TED-85-0385-001). This board includes 1500 mm2 of 4 oz. (0.0694 mm) copper connected to pins 4 and 5, with thermal vias connecting the layers. Top and bottom layers of the PCB are shown below in Figure 10. The thermal response is highly dependent on PCB layout, copper thickness, cooling techniques, and the profile of the injected current. The current profile includes peak current, current "on-time", and duty cycle. While the data presented in this section was collected with direct current (DC), these numbers may be used to approximate thermal response for both AC signals and current pulses. The plot in Figure 9 shows the measured rise in steady-state die temperature of the ACS773 versus DC input current at an ambient temperature, TA, of 25C. The thermal offset curves may be directly applied to other values of TA. Figure 9: Self-Heating in the CB Package Due to Current Flow The thermal capacity of the ACS773 should be verified by the end user in the application's specific conditions. The maximum junction temperature, TJ(max), should not be exceeded. Further information on this application testing is available in the DC Current Capability and Fuse Characteristics of Current Sensor ICs with 50 to 200 A Measurement Capability application note on the Allegro website (https://www.allegromicro.com/en/DesignCenter/Technical-Documents/Hall-Effect-Sensor-IC-Publications/ DC-Current-Capability-Fuse-Characteristics-Current-Sensor-ICs50-200-A.aspx). Figure 10: Top and Bottom Layers for ASEK773 Evaluation Board Gerber files for the ASEK773 evaluation board are available for download from the Allegro website; see the technical documents section of the ACS773 webpage (https://www.allegromicro.com/ en/Products/Current-Sensor-ICs/Fifty-To-Two-Hundred-AmpIntegrated-Conductor-Sensor-ICs/Acs773.aspx). Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 23 High Accuracy, Hall-Effect-Based, 200 kHz Bandwidth, Galvanically Isolated Current Sensor IC with 100 Current Conductor ACS773 PACKAGE OUTLINE DRAWINGS For Reference Only - Not for Tooling Use (Reference DWG-9111 & DWG-9110) Dimensions in millimeters - NOT TO SCALE Dimensions exclusive of mold flash, gate burs, and dambar protrusions Exact case and lead configuration at supplier discretion within limits shown 14.0 0.2 3.5 0.2 4.0 0.2 3.0 0.2 1 2 1.50 0.10 5 0.5 R1 = 1.0 R2 = 2.05 R3 = 3.0 4 A O 0.5 B 3 17.5 0.2 4 21.4 13.00 0.10 Branded Face 4.40 0.10 O 0.8 1.9 0.2 1 2 O 1.5 2.9 0.2 0.51 0.10 3 0.381 10.00 0.10 +0.060 -0.030 1.91 55 B 3.5 0.2 PCB Layout Reference View XXXXXXX XXX-XXX 7.00 0.10 XXXXXXX XXXX A Dambar removal intrusion B Perimeter through-holes recommended 1 C Branding scale and appearance at supplier discretion C Standard Branding Reference View Lines 1, 2, 3, 4 = 7 characters. Line 1: Part Number Line 2: Package Temperature - Amperes Line 3: Lot Number Line 4: Date Code, Logo A Creepage distance, current terminals to signal pins: 7.25 mm Clearance distance, current terminals to signal pins: 7.25 mm Package mass: 4.63 g typical Figure 11: Package CB, 5-Pin, Leadform PFF Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 24 High Accuracy, Hall-Effect-Based, 200 kHz Bandwidth, Galvanically Isolated Current Sensor IC with 100 Current Conductor ACS773 For Reference Only - Not for Tooling Use (Reference DWG-9111, DWG-9110) Dimensions in millimeters - NOT TO SCALE Dimensions exclusive of mold flash, gate burs, and dambar protrusions Exact case and lead configuration at supplier discretion within limits shown 14.0 0.2 4.0 0.2 3.0 0.2 0.8 5 4 1.5 1.50 0.10 1.91 B 2.75 0.10 A PCB Layout Reference View 23.50 0.5 XXXXXXX XXX-XXX 13.00 0.10 4.40 0.10 XXXXXXX XXXX Branded Face 1.9 0.2 1 2 1 2.9 0.2 0.51 0.10 C 3 0.381 +0.060 -0.030 Standard Branding Reference View Lines 1, 2, 3, 4 = 7 characters. 55 Line 1: Part Number Line 2: Package Temperature - Amperes Line 3: Lot Number Line 4: Date Code, Logo A 3.5 0.2 10.00 0.10 7.00 0.10 A Dambar removal intrusion B Perimeter through-holes recommended C Branding scale and appearance at supplier discretion Figure 12: Package CB, 5-Pin, Leadform PSF Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 25 ACS773 High Accuracy, Hall-Effect-Based, 200 kHz Bandwidth, Galvanically Isolated Current Sensor IC with 100 Current Conductor Revision History Number Date Description - December 12, 2017 Initial release 1 February 9, 2018 2 May 29, 2018 3 November 2, 2018 Added -PSF leadform option and Applications Information section (page 22); updated Typical Application (page 1), pinout diagram (page 4), TOP to TA (pages 2 and 5-9), and Character Performance plots (page 11-12). 4 December 12, 2018 Added UL certificate; updated package outline drawing PCB layouts and branding (pages 24-25) 5 March 14, 2019 6 June 27, 2019 Added Dielectric Surge Strength Test Voltage characteristic (page 3) and EEPROM Error Checking and Correction section (page 15). Updated Power-On Reset (POR) section (page 14). Added Characteristic Performance plots and -150B part variant. Updated package branding (pages 24-25) and Temperature ratings (pages 2-3, 6-10) Corrected EVB copper thickness (page 23) Copyright 2019, Allegro MicroSystems. Allegro MicroSystems reserves the right to make, from time to time, such departures from the detail specifications as may be required to permit improvements in the performance, reliability, or manufacturability of its products. Before placing an order, the user is cautioned to verify that the information being relied upon is current. Allegro's products are not to be used in any devices or systems, including but not limited to life support devices or systems, in which a failure of Allegro's product can reasonably be expected to cause bodily harm. The information included herein is believed to be accurate and reliable. However, Allegro MicroSystems assumes no responsibility for its use; nor for any infringement of patents or other rights of third parties which may result from its use. Copies of this document are considered uncontrolled documents. For the latest version of this document, visit our website: www.allegromicro.com Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 26