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Supporting Services ACS758ECB-200B-PFF-T

Supporting Services ACS758ECB-200B-PFF-T

Country/Region china
Company YXF INTERNATIONAL CO., LIMITED
Categories AC DC Converter
Update 2016-07-25 11:54:23
ICP License Issued by the Chinese Ministry
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ACS758ECB-200B-PFF-T
ModelCodeACS758ECB-200B-PFF-TUpdate2015-03-31 13:54:54
FactoryALLEGROHits1218
Dcs2011Tech PDF
Stock Qty10000Sales Phone+86-755-23816381
Seal3-lead CB
Packing340/BOX

Description:

Features and Benefits

  • Industry-leading noise performance through proprietary amplifier and filter design techniques
  • Integrated shield greatly reduces capacitive coupling from current conductor to die due to high dV/dt signals, and prevents offset drift in high-side, high voltage applications
  • Total output error improvement through gain and offset trim over temperature
  • Small package size, with easy mounting capability
  • Monolithic Hall IC for high reliability
  • Ultra-low power loss: 100 internal conductor resistance
  • Galvanic isolation allows use in economical, high-side current sensing in high voltage systems
  • 3.0 to 5.5 V, single supply operation
  • 120 kHz typical bandwidth
  • 3 s output rise time in response to step input current
  • Output voltage proportional to AC or DC currents
  • Factory-trimmed for accuracy
  • Extremely stable output offset voltage
  • Nearly zero magnetic hysteresis

Description

The Allegro ACS758 family of current sensor ICs provides economical and precise solutions for AC or DC current sensing. Typical applications include motor control, load detection and management, power supply and DC-to-DC converter control, inverter control, and overcurrent fault detection.

The device consists of a precision, low-offset linear Hall circuit with a copper conduction path located near the die. Applied current flowing through this copper conduction path generates a magnetic field which the Hall IC converts into a proportional voltage. Device accuracy is optimized through the close proximity of the magnetic signal to the Hall transducer. A precise, proportional output voltage is provided by the low-offset, chopper-stabilized BiCMOS Hall IC, which is programmed for accuracy at the factory.

High level immunity to current conductor dV/dt and stray electric fields, offered by Allegro proprietary integrated shield technology, guarantees low output voltage ripple and low offset drift in high-side, high voltage applications.

The output of the device has a positive slope (>VCC / 2) when an increasing current flows through the primary copper conduction 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 (pins 1 through 3). This allows the ACS758 family of sensor ICs to be used in applications requiring electrical isolation without the use of opto-isolators or other costly isolation techniques.

The device is fully calibrated prior to shipment from the factory. The ACS758 family is lead (Pb) free. All leads are plated with 100% matte tin, and there is no Pb inside the package. The heavy gauge leadframe is made of oxygen-free copper.

Functional Block Diagram

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