ACS780xLR High-Precision Linear Hall-Effect-Based Current Sensor IC With 200 Current Conductor FEATURES AND BENEFITS DESCRIPTION Core-less, micro-sized, 100 A continuous current package The Allegro ACS780xLR is a fully integrated current sensor Ultra-low power loss: 200 internal conductor linear IC in a new core-less package designed to sense AC and resistance DC currents up to 100 A. This automotive-grade, low-profile Immunity to common-mode field interference (1.5 mm thick) sensor IC package has a very small footprint. Greatly improved total output error through digitally The Hall sensor technology also incorporates common-mode programmed and compensated gain and offset over the full field rejection to optimize performance in the presence of operating temperature range interfering magnetic fields generated by nearby current-carrying Industry-leading noise performance through proprietary conductors. amplifier and filter design techniques The device consists of a precision, low-offset linear Hall circuit Integrated shield greatly reduces capacitive coupling from with a copper conduction path located near the die. Applied current conductor to die due to high dV/dt signals, and current flowing through this copper conduction path generates prevents offset drift in high-side, high-voltage applications a magnetic field which the Hall IC converts into a proportional Monolithic Hall IC for high reliability voltage. Device accuracy is optimized through the close 4.5 to 5.5 V, single supply operation proximity of the primary conductor to the Hall transducer and 120 kHz typical bandwidth factory programming of the sensitivity and quiescent output 3.6 s output rise time in response to step input current voltage at the Allegro factory. Output voltage proportional to AC or DC currents Factory-trimmed for accuracy Chopper-stabilized signal path and digital temperature Extremely stable quiescent output voltage compensation technology also contribute to the stability of the AEC-Q100 automotive qualification device across the operating temperature range. High-level immunity to current conductor dV/dt and stray PACKAGE: electric fields is offered by Allegro proprietary integrated shield 7-pin PSOF package (suffix LR) technology, for low-output voltage ripple and low-offset drift in high-side, high-voltage applications. The output of the device has a positive slope (>V / 2) when an CC increasing current flows through the primary copper conduction Continued on the next page Not to scale ACS780xLR R F 3 5 VOUT IP+ V OUT C F 2 I P GND 5 V C BYP 6 0.1 F IP 1 VCC Typical Application Application 1: The ACS780xLR outputs an analog signal, V , that varies linearly with the bidirectional AC or DC primary OUT current, I , within the range specified. C is for optimal noise management, with values that depend on the application. P F ACS780xLR-DS, Rev. 2 October 23, 2017 MCO-0000275High-Precision Linear Hall-Effect-Based ACS780xLR Current Sensor IC With 200 Current Conductor DESCRIPTION (CONTINUED) path (from terminal 5 to terminal 6), which is the path used for 7), allowing the device to operate safely with voltages up to 100 V current sampling. The internal resistance of this conductive path is peak on the primary conductor. 200 typical, providing low power loss. The device is fully calibrated prior to shipment from the factory. The thickness of the copper conductor allows survival of the device The ACS780xLR family is lead (Pb) free. All leads are plated with at high overcurrent conditions. The terminals of the conductive path 100% matte tin, and there is no Pb inside the package. The heavy are electrically isolated from the signal leads (pins 1 through 4, and gauge leadframe is made of oxygen-free copper. SELECTION GUIDE Primary Sampled Sensitivity Sensed Current T OP 1 Part Number Current, I Sens (Typ.) Packing P Direction (C) (A) (mV/A) ACS780LLRTR-050B-T Bidirectional 50 40. ACS780LLRTR-050U-T Unidirectional 0 to 50 60. 40 to 150 ACS780LLRTR-100B-T Bidirectional 100 20. ACS780LLRTR-100U-T Unidirectional 0 to 100 40. Tape and reel 150 transient ACS780KLRTR-150B-T Bidirectional 13.33 100 continuous 40 to 125 0 to 150 transient ACS780KLRTR-150U-T Unidirectional 26.66 0 to 100 continuous 1 Contact Allegro for additional packing options. Allegro MicroSystems, LLC 2 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000 www.allegromicro.com