ACS732KMA and ACS733KMA 1 MHz Bandwidth, Galvanically Isolated Current Sensor IC in SOIC-16 Package FEATURES AND BENEFITS DESCRIPTION AEC-Q100 automotive qualified The ACS732KMA and ACS733KMA are a new generation High bandwidth, 1 MHz analog output of high bandwidth current sensor ICs from Allegro. These devices provide a compact, fast, and accurate solution for Differential Hall sensing rejects common-mode fields measuring high-frequency currents in DC/DC converters and High-isolation SOIC16 wide body package provides other switching power applications. The ACS732 and ACS733 galvanic isolation for high-voltage applications offer high isolation, high bandwidth Hall-effect-based current Industry-leading noise performance with greatly sensing with user-configurable overcurrent fault detection. improved bandwidth through proprietary amplifier and These features make them ideally suited for high-frequency filter design transformer and current transformer replacement in applications UL 60950-1 (ed. 2) and UL 62368 (ed. 1) certified running at high voltages. Dielectric Strength Voltage = 4.8 kV RMS Basic Isolation Working Voltage = 1097 V The ACS732 and ACS733 are suitable for all markets, including RMS Reinforced Isolation Working Voltage = 550 V automotive, industrial, commercial, and communications RMS Fast and externally configurable overcurrent fault systems. They may be used in motor control, load detection detection and management, switch-mode power supplies, and overcurrent fault protection applications. 0.85 m primary conductor resistance for low power loss and high inrush current withstand capability The wide body SOIC-16 package allows for easy Options for 3.3 V and 5 V single supply operation implementation. Applied current flowing through the copper Output voltage proportional to AC and DC current conduction path generates a magnetic field that is sensed by the Factory-trimmed sensitivity and quiescent output voltage IC and converted to a proportional voltage. Current is sensed for improved accuracy differentially in order to reject external common-mode fields. Ratiometric output from supply voltage Device accuracy is optimized through the close proximity of the magnetic field to the Hall transducers. A precise, proportional voltage is provided by the Hall IC, which is factory-programmed PACKAGE: 16-Pin SOICW (suffix MA) after packaging for high accuracy. The fully integrated package has an internal copper conductive path with a typical resistance of 0.85 m, providing low power loss. The current-carrying pins (pins 1 through 8) are electrically isolated from the sensor leads (pins 9 through 16). This allows CB Certificate Number: the devices to be used in high-side current sensing applications US-32210-M3-UL without the use of high-side differential amplifiers or other US-36315-UL costly isolation techniques. Not to scale Continued on next page... R C 1 16 BYPASS PU IP+ VOC 2 15 IP+ VCC ACS733 3 14 IP+ VCC ACS732/ACS733 outputs 4 13 an analog signal, V , that IOUT IP+ FAULT I changes proportionally with P 5 12 IP the bidirectional AC or DC VIOUT 6 primary sensed current, I , C P L 11 IP GND within the specified mea - 7 10 surement range. IP GND 8 9 IP The overcurrent threshold PROGRAM may be set with a resistor divider tied to the V pin. OC Figure 1: Typical Application Circuit ACS732-33KMA-DS, Rev. 9 May 18, 2022 MCO-0000589ACS732KMA and 1 MHz Bandwidth, Galvanically Isolated Current Sensor IC in SOIC-16 Package ACS733KMA DESCRIPTION (continued) The ACS732 and ACS733 are provided in a small, low profile, free printed circuit board assembly processes. Internally, the device surface-mount SOIC-16 wide-body package. The leadframe is plated is lead-free. These devices are fully calibrated prior to shipment with 100% matte tin, which is compatible with standard lead (Pb) from the Allegro factory. SELECTION GUIDE 1 Sensitivity , Optimized Nominal Supply T A 2 Sens(Typ) Part Number Range, I Packing P Voltage, V , (V) (C) CC (A) (mV/A) ACS732KMATR-65AB-T 65 30.77 5 ACS732KMATR-75AB-T 75 26.67 5 40 to 125 Tape and reel, 1000 pieces per reel ACS733KMATR-65AB-T 65 20.3 3.3 1 Measured at Nominal Supply Voltage, V . CC 2 Contact Allegro for additional packing options. ABSOLUTE MAXIMUM RATINGS Characteristic Symbol Notes Rating Units Supply Voltage V 6 V CC Reverse Supply Voltage V 0.1 V RCC Output Voltage V 6 V IOUT Reverse Output Voltage V 0.1 V RIOUT Fault Output Voltage V 6 V FAULT Reverse Fault Output Voltage V 0.1 V RFAULT Forward V Voltage V 6 V OC VOC Reverse V Voltage V 0.1 V OC RVOC Output Current I Maximum survivable sink or source current on the output 15 mA OUT Maximum Continuous Current I T = 25C 60 A CMAX A Nominal Operating Ambient Temperature T Range K 40 to 125 C A Maximum Junction Temperature T 165 C J(max) Storage Temperature T 65 to 170 C stg 2 Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com