ACS758xCB Thermally Enhanced, Fully Integrated, Hall Effect-Based Linear Current Sensor IC with 100 Current Conductor FEATURES AND BENEFITS DESCRIPTION Industry-leading noise performance through proprietary The Allegro ACS758 family of current sensor ICs provides amplifier and filter design techniques economical and precise solutions for AC or DC current sensing. Integrated shield greatly reduces capacitive coupling Typical applications include motor control, load detection and from current conductor to die due to high dV/dt signals, management, power supply and DC-to-DC converter control, and prevents offset drift in high-side, high voltage inverter control, and overcurrent fault detection. applications The device consists of a precision, low-offset linear Hall Total output error improvement through gain and offset circuit with a copper conduction path located near the die. trim over temperature Applied current flowing through this copper conduction path Small package size, with easy mounting capability generates a magnetic field which the Hall IC converts into a Monolithic Hall IC for high reliability proportional voltage. Device accuracy is optimized through the Ultra-low power loss: 100 internal conductor close proximity of the magnetic signal to the Hall transducer. resistance A precise, proportional output voltage is provided by the Galvanic isolation allows use in economical, high-side low-offset, chopper-stabilized BiCMOS Hall IC, which is current sensing in high voltage systems programmed for accuracy at the factory. AEC Q-100 qualified High level immunity to current conductor dV/dt and stray Continued on the next page electric fields, offered by Allegro proprietary integrated shield technology, provides low output voltage ripple and low offset TV America Certificate Number: drift in high-side, high voltage applications. U8V 14 05 54214 028 UL Certified The output of the device has a positive slope (>V / 2) when an File No.: E316429 CC increasing current flows through the primary copper conduction PACKAGE: 5-PIN CB PACAKGE 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 PFF PSF PSS Continued on the next page Leadform Leadform Leadform +3.3 or 5 V 1 4 VCC IP+ C BYP ACS758 0.1 F 2 I GND P C F 5 IP 3 VIOUT V OUT R F Application 1: The ACS758 outputs an analog signal, V , OUT that varies linearly with the uni- or bi-directional AC or DC primary sampled current, I , within the range specified. C is P F for optimal noise management, with values that depend on the application. Typical Application ACS758-DS, Rev. 9 Type testedThermally Enhanced, Fully Integrated, Hall Effect-Based ACS758xCB Linear Current Sensor IC with 100 Current Conductor FEATURES AND BENEFITS (CONTINUED) DESCRIPTION (CONTINUED) 3.0 to 5.5 V, single supply operation (pins 1 through 3). This allows the ACS758 family of sensor ICs 120 kHz typical bandwidth to be used in applications requiring electrical isolation without the 3 s output rise time in response to step input current use of opto-isolators or other costly isolation techniques. Output voltage proportional to AC or DC currents The device is fully calibrated prior to shipment from the factory. Factory-trimmed for accuracy The ACS758 family is lead (Pb) free. All leads are plated with 100% Extremely stable output offset voltage matte tin, and there is no Pb inside the package. The heavy gauge Nearly zero magnetic hysteresis leadframe is made of oxygen-free copper. Selection Guide Package Sensitivity Primary Sampled Current T OP 1 2 Sens (Typ.) Part Number Current , I Packing P Directionality (C) Terminals Signal Pins (A) (mV/A) ACS758LCB-050B-PFF-T Formed Formed 50 40. Bidirectional ACS758LCB-050U-PFF-T Formed Formed 50 60. Unidirectional ACS758LCB-100B-PFF-T Formed Formed 100 20. Bidirectional 40 to 150 ACS758LCB-100B-PSF-T Straight Formed 100 20. Bidirectional ACS758LCB-100U-PFF-T Formed Formed 100 40. Unidirectional ACS758KCB-150B-PFF-T Formed Formed 150 13.3 Bidirectional 34 pieces per tube ACS758KCB-150B-PSS-T Straight Straight 150 13.3 Bidirectional 40 to 125 ACS758KCB-150U-PFF-T Formed Formed 150 26.7 Unidirectional ACS758ECB-200B-PFF-T Formed Formed 200 10. Bidirectional ACS758ECB-200B-PSF-T Straight Formed 200 10. Bidirectional 40 to 85 ACS758ECB-200B-PSS-T Straight Straight 200 10. Bidirectional ACS758ECB-200U-PFF-T Formed Formed 200 20. Unidirectional 1 Additional leadform options available for qualified volumes. 2 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