ACS709LLFTR-10BB-T

• Product Introduction

The Allegro® ACS709 current sensor IC provides an affordable and accurate solution for current sensing applications in industrial, automotive, commercial, and communication systems. The device is available in a small surface-mount package, making it easy to implement in customer applications.

The ACS709 features a precise linear Hall sensor integrated circuit with a copper current path close to the surface of the silicon wafer. The applied current flows through the copper current path, while the analog output voltage of the Hall sensor IC linearly tracks the magnetic field generated by the applied current. The accuracy of the ACS709 is further enhanced by this patented package configuration, as the Hall components are positioned very close to the current to be measured.

Allegro's exclusive integrated screen technology enables high tolerance to current conductor dV/dt signals and stray electric fields, ensuring low output voltage ripple and low bias drift in high-end applications.

The overcurrent input (VOC pin) voltage allows the customer to set an overcurrent fault threshold for the device. When current flowing through the copper current path (between the IP+ and IP– pins) exceeds this threshold, the open-drain overcurrent fault pin goes into a logically low state. The ACS709's internal linear Hall sensor IC is factory-programmed to enable highly accurate analog and digital output signals.

The typical copper path internal resistance for current sensing is 1.1 mΩ with low power loss. Moreover, the current path is galvanically isolated from the input and output of the low-voltage device. This allows the ACS709 family of sensor ICs to be used in applications that require electrical isolation without the use of photoisolators or other expensive isolation technologies.

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• 电机控制与保护
• 负载管理与过流检测
• 功率转换与电池监控 /UPS 系统

ACS709-10 UL Certificate of Conformity (PDF)