Current Sensor: ACS755xCB-150
The Allegro ACS75x family of current sensors provides economical and
precise solutions for current sensing in industrial, automotive, commercial, and
communications systems. The device package allows for easy implementation by
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4
the customer. Typical applications include load detection and management, power
supplies, and overcurrent fault protection.
The device consists of a precision, low-offset linear Hall sensor circuit with a
copper conduction path located near the die. Applied current flowing through
this copper conduction path generates a magnetic field which is sensed by the
integrated Hall IC and converted into a proportional voltage. Device accuracy
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2
3
is optimized through the close proximity of the magnetic signal to the Hall
transducer. A precise, proportional voltage is provided by the low-offset, chopper-
stabilized BiCMOS Hall IC, which is programmed for accuracy at the factory.
Package CB-PSF
5
The output of the device will be valid when the current flows from pin 4 to pin 5.
The internal resistance of this conductive path is typically 100 μΩ, providing
low power loss. The thickness of the copper conductor allows survival of the
device at up to 5× overcurrent conditions. The terminals of the conductive path
are electrically isolated from the sensor leads (pins 1 through 3). This allows the
ACS75x family of sensors to be used in applications requiring electrical isolation
without the use of opto-isolators or other costly isolation techniques.
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1
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3
The device is fully calibrated prior to shipment from the factory. The ACS75x
family is lead-free. All leads are coated with 100% matte tin, and there is no lead
inside the package. The heavy gauge leadframe is made of oxygen-free copper.
Package CB-PSS
Pin 1: VCC
Pin 2: GND
Pin 3: VOUT
Terminal 4: IP+
Terminal 5: IP–
Features and Benefits
• Monolithic Hall IC for high reliability
• Single +5 V supply
• 3 kVRMS isolation voltage between terminals 4/5 and pins 1/2/3
• 35 kHz bandwidth
ABSOLUTE MAXIMUM RATINGS
Supply Voltage, VCC ..........................................16 V
Reverse Supply Voltage, VRCC ........................–16 V
Output Voltage, VOUT ........................................16 V
Reverse Output Voltage, VROUT......................–0.1 V
Output Current Source, IOUT(Source) ................. 3 mA
Output Current Sink, IOUT(Sink).......................10 mA
Operating Temperature,
Ambient, TA, K range..................... –40 to 125ºC
Ambient, TA, S range ....................... –20 to 85ºC
Maximum Junction, TJ(max)............................. 165°C
Maximum Storage Temperature, TS ....–65 to 170°C
• Automotive temperature range
• End-of-line factory-trimmed for gain and offset
• Ultra-low power loss: 100 μΩ internal conductor resistance
• Ratiometric output from supply voltage
• Extremely stable output offset voltage
• Small package size, with easy mounting capability
• Output proportional to ac and dc currents
Applications
• Automotive systems
• Industrial systems
• Power conversion
• Battery monitors
Use the following complete part numbers when ordering:
Part Number
Package
Ambient
ACS755KCB-150-PSF
ACS755KCB-150-PSS
ACS755SCB-150-PSF
ACS755SCB-150-PSS
Formed signal pins
Straight signal pins
Formed signal pins
Straight signal pins
–40 to 125°C
TÜV America
Certificate Number:
U8V 04 11 54214 001
–20 to 85°C
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
ACS755150-DS, Rev. 2
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