ACS713 Fully Integrated, Hall Effect-Based Linear Current Sensor with 2.1 kVRMS Voltage Isolation and a Low-Resistance Current Conductor Features and Benefits Description Low-noise analog signal path The Allegro ACS713 provides economical and precise Device bandwidth is set via the new FILTER pin solutions for DC current sensing in industrial, commercial, and 5 s output rise time in response to step input current communications systems. The device package allows for easy 80 kHz bandwidth implementation by the customer. Typical applications include Total output error 1.5% at T = 25C motor control, load detection and management, switched-mode A Small footprint, low-profile SOIC8 package power supplies, and overcurrent fault protection. 1.2 m internal conductor resistance The device consists of a precise, low-offset, linear Hall 2.1 kV minimum isolation voltage from pins 1-4 to pins 5-8 RMS sensor circuit with a copper conduction path located near the 5.0 V, single supply operation surface of the die. Applied current flowing through this copper 133 to 185 mV/A output sensitivity conduction path generates a magnetic field which is sensed Output voltage proportional to DC currents by the integrated Hall IC and converted into a proportional Factory-trimmed for accuracy voltage. Device accuracy is optimized through the close Extremely stable output offset voltage proximity of the magnetic signal to the Hall transducer. A Nearly zero magnetic hysteresis precise, proportional voltage is provided by the low-offset, Ratiometric output from supply voltage chopper-stabilized BiCMOS Hall IC, which is programmed TV America for accuracy after packaging. Certificate Number: U8V 06 05 54214 010 The output of the device has a positive slope (>V ) IOUT(Q) when an increasing current flows through the primary copper conduction path (from pins 1 and 2, to pins 3 and 4), which Package: 8 Lead SOIC (suffix LC) is the path used for current sensing. The internal resistance of this conductive path is 1.2 m typical, providing low power loss. The thickness of the copper conductor allows survival Continued on the next page Approximate Scale 1:1 Typical Application +5 V 8 1 VCC IP+ V 7 OUT 2 C VIOUT IP+ BYP 0.1 F I P ACS713 6 3 FILTER IP C 4 F IP 5 GND Application 1. The ACS713 outputs an analog signal, V . OUT that varies linearly with the unidirectional DC primary sensed current, I , within the range specified. C is recommended for P F noise management, with values that depend on the application. ACS713-DS, Rev. 4Fully Integrated, Hall Effect-Based Linear Current Sensor with ACS713 2.1 kVRMS Voltage Isolation and a Low-Resistance Current Conductor Description (continued) The ACS713 is provided in a small, surface mount SOIC8 package. of the device at up to 5 overcurrent conditions. The terminals of The leadframe is plated with 100% matte tin, which is compatible the conductive path are electrically isolated from the sensor leads with standard lead (Pb) free printed circuit board assembly processes. (pins 5 through 8). This allows the ACS713 current sensor to be Internally, the device is Pb-free, except for flip-chip high-temperature used in applications requiring electrical isolation without the use Pb-based solder balls, currently exempt from RoHS. The device is of opto-isolators or other costly isolation techniques. fully calibrated prior to shipment from the factory. Selection Guide T Optimized Range, I Sensitivity, Sens A P Part Number Packing* (C) (A) (Typ) (mV/A) ACS713ELCTR-20A-T Tape and reel, 3000 pieces/reel 40 to 85 0 to 20 185 ACS713ELCTR-30A-T Tape and reel, 3000 pieces/reel 40 to 85 0 to 30 133 *Contact Allegro for additional packing options. Absolute Maximum Ratings Characteristic Symbol Notes Rating Units Supply Voltage V 8V CC Reverse Supply Voltage V 0.1 V RCC Output Voltage V 8V IOUT Reverse Output Voltage V 0.1 V RIOUT Pins 1-4 and 5-8 60 Hz, 1 minute, T =25C 2100 V A Reinforced Isolation Voltage V ISO Voltage applied to leadframe (Ip+ pins), based 184 V peak on IEC 60950 Pins 1-4 and 5-8 60 Hz, 1 minute, T =25C 1500 V A Basic Isolation Voltage V ISO(bsc) Voltage applied to leadframe (Ip+ pins), based 354 V peak on IEC 60950 Output Current Source I 3mA OUT(Source) Output Current Sink I 10 mA OUT(Sink) Overcurrent Transient Tolerance I 1 pulse, 100 ms 100 A P Nominal Operating Ambient Temperature T Range E 40 to 85 C A Maximum Junction Temperature T (max) 165 C J Storage Temperature T 65 to 170 C stg Parameter Specification CAN/CSA-C22.2 No. 60950-1-03 Fire and Electric Shock UL 60950-1:2003 EN 60950-1:2001 Allegro MicroSystems, Inc. 2 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 www.allegromicro.com