These devices are Allegro's first 1 MHz offerings, providing galvanic isolation ratings of 3600 VRMS. The Hall effect-based current-sensing ICs include user-configurable overcurrent fault detection.
These features make them ideal for replacing current transformers and high-frequency transformers in high-voltage applications.
The ACS732 and ACS733 are suitable for all markets, including automotive, industrial, commercial, and communications systems. They can be used for motor control, load sensing and management, switched-mode power supplies, and overcurrent fault protection applications. The devices are fully calibrated at the Allegro factory to provide a high-precision solution across the entire operating temperature range.
The fully integrated, wide-body SOIC-16 package has a typical resistance of 1 mΩ, providing low power loss and reduced material usage for easy implementation. The applied current flowing through the copper conduction generates a magnetic field that the IC detects and converts to a proportional voltage. The current is detected differentially to reject external common-mode fields. The current-carrying pins (pins 1 to 8) are electrically isolated from the sensor leads (pins 9 to 16). This allows the devices to be used in high-side (HS) current sensing applications without the use of HS differential amplifiers, isolators, or other expensive isolation techniques.
The ACS732 and ACS733 are supplied in a small, low-profile, surface-mount SOIC-16 package. This package is lead-free (Pb) with a 100% matt-tin lead coating (suffix -T).

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