Diodes Incorporated

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Micro-Power High-Side Current Monitor w/ Improved Temperature Drift

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The ZXCT1011 is a high side current sense monitor. Using this type of device eliminates the need to disrupt the ground plane when sensing a load current. The ZXCT1011 takes the voltage developed across a current shunt resistor and translates it into a proportional output current. A user defined output resistor scales the output current into a ground referenced voltage. A current reference resistor, external to the IC, results in an improved temperature coefficient compared to the ZXCT1009. The wide input voltage range of 20V down to as low as 2.5V make it suitable for a range of applications. With a minimum operating current of just 4uA, combined with its SOT25 package make it suitable for portable battery equipment too.


  • Accurate high-side current sensing
  • 2.5V to 20V supply range
  • 4 μA quiescent current
  • 1% typical accuracy
  • Package SOT25
  • Temperature range -40 to 125°C
  • Application(s)

  • Automotive current measurement
  • Battery management
  • DC motor and solenoid control
  • Over current monitor
  • Power management
  • Product Specifications

    Product Parameters

    Compliance (Only Automotive supports PPAP) Standard
    AEC Qualified No
    Type Current Output
    Minimum S+ Common-Mode Sense Voltage (V) 2.5
    Maximum S+ Common-Mode Sense Voltage (V) 20
    Minimum VCC/VB Supply Voltage (V) -
    Maximum VCC/VB Supply Voltage (V) -
    Sense Voltage VMAX (mV) 500
    Maximum Output Voltage (V) Vs+ -2.5
    Voltage output Gain VOUT/VSENSE (V/V) -
    Current output Gain Iout/VSENSE (mA/V) Ext resistor
    % Accuracy @ VSENSE =100mV Ta (%) 3
    Quiescent Current (µA) 4
    IS- S- Input current (nA) 100
    Bandwidth typ (MHz) 1.5
    Operating Ambient Temperature Range (°C) -40 to 125
    Special Features Ground Pin + External Transconductance Resistor + Extended Temp Range

    Related Content


    Technical Documents

    Application Notes

    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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