ACS732KLATR-40AB-T

The ACS732 and ACS733 are a new generation of high
bandwidth current sensor ICs from Allegro™. These devices
provide a compact, fast, and accurate solution for measuring
high-frequency currents in DC/DC converters and other
switching power applications. The ACS732 and ACS733
offer high isolation, high bandwidth Hall-effect-based current
sensing with user-configurable overcurrent fault detection.
These features make them ideally suited for high-frequency
transformer and current transformer replacement in applications
running at high voltages.
The ACS732 and ACS733 are suitable for all markets, including
automotive, industrial, commercial, and communications
systems. They may be used in motor control, load detection
and management, switch-mode power supplies, and overcurrent
fault protection applications.
The wide body SOIC-16 package allows for easy
implementation. Applied current flowing through the copper
conduction path generates a magnetic field that is sensed by the
IC and converted to a proportional voltage. Current is sensed
differentially in order to reject external common-mode fields.
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
after packaging for high accuracy. The fully integrated package
has an internal copper conductive path with a typical resistance
of 1 mΩ, 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
the devices to be used in high-side current sensing applications
without the use of high-side differential amplifiers or other
costly isolation techniques.