Diodes Incorporated

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High Voltage High-Side Current Monitor

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The ZXCT1081 is a high side current sense monitor with a gain of 10 and a voltage output. Using this device eliminates the need to disrupt the ground plane when sensing a load current. The wide input voltage range of 40V down to as low as 3V make it suitable for a range of applications; including systems operating from industrial 24-28V rails and power supplies.


  • 3V to 40V continuous high side voltage
  • Accurate high-side current sensing
  • Output voltage scaling x10
  • 4.5V to 12V VCC range
  • Low quiescent current: - 80μA supply pin - 30μA ISENSE+
  • SOT25 package
  • -40°C to 125°C ambient temperature range
  • Application(s)

  • Automotive current measurement
  • Industrial applications current measurement
  • Battery management
  • Over current monitor
  • Power management
  • Power adapters
  • Product Specifications

    Product Parameters

    Compliance (Only Automotive supports PPAP) Standard
    AEC Qualified No
    Type Voltage output
    Minimum S+ Common-Mode Sense Voltage (V) 3
    Maximum S+ Common-Mode Sense Voltage (V) 40
    Minimum VCC/VB Supply Voltage (V) 4.5
    Maximum VCC/VB Supply Voltage (V) 12
    Sense Voltage VMAX (mV) 150
    Maximum Output Voltage (V) VS- -1
    Voltage output Gain VOUT/VSENSE (V/V) 10
    Current output Gain Iout/VSENSE (mA/V) -
    % Accuracy @ VSENSE =100mV Ta (%) -
    Quiescent Current (µA) 30
    IS- S- Input current (nA) 40
    Bandwidth typ (MHz) 0.5
    Operating Ambient Temperature Range (°C) -40 to 125
    Special Features Separate Vcc Pin + 40V CM + Extended Temp Range

    Related Content


    Technical Documents

    Application Notes

    Design tool model software

    ICP Reports

    Evaluation Boards and User Guides

    Recommended Soldering Techniques


    Diodes Incorporated's current monitors are high-performance, high-side/power rail current measurement ICs. They greatly simplify the measurement of load currents without disturbing the ground plane/reference point.

    The current monitor families contain variants with quiescent currents as low as 3µA, and others with operating voltages up to 60V, proving solutions for overcurrent detection in consumer, industrial, and automotive applications. The portfolio includes current output variants which via an external resistor to ground to provide adjustable gain, and voltage output variants with fixed gains.

    Automotive-compliant variants are available which are qualified to AEC-Q100 Grade 1 in IATF 16949 facilities supporting PPAP documentation.

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