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High-Side Current Monitor

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The ZXCT1009Q is a micropower high side current sense monitor. This device eliminates the need to disrupt the ground plane when sensing a load current.
It takes a high side 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.
The wide input voltage range of 20V down to as low as 2.5V make it suitable for a range of applications. A minimum operating current of just 4μA, combined with a SOT23 package make it a unique solution for portable battery equipment.
The ZXCT1009Q has been qualified to AEC-Q100 Grade 3 and is Automotive Grade supporting PPAPs.


  • Automotive Current Measurement
  • Automotive DC Motor Stall Detection
  • Over Current Monitor


  • Low cost, accurate high-side current sensing
  • Output voltage scaling
  • Up to 2.5V sense voltage
  • 2.5V to 20V supply range
  • 4μA quiescent current
  • 1% typical accuracy
  • SOT23
    • Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
    • Halogen and Antimony Free. “Green” Device (Note 3)
  • Automotive Grade
    • Qualified to AEC-Q100 Standards for High Reliability
    • PPAP Capable (Note 4)

Product Specifications

Product Parameters

Compliance (Only Automotive supports PPAP) Automotive
Qualified to AEC-Q10x Yes
% Accuracy @ VSENSE =100mV Ta  2.5 %
Quiescent Current (mA) 4 µA
Gain Output/VSENSE 10
Bandwidth typ (MHz) 2 MHz
Operating Ambient Temperature Range (°C) -40 to 85 °C
Special Features Simple Current Output Current Monitor

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Orderable Part Number Buy from Distributor / Contact Sales Request Samples


Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Avnet EU 21000 9/22/2021 Germany Buy Now
Farnell, An Avnet Company 2965 9/22/2021 England Buy Now
Mouser Electronics Inc. 4322 9/22/2021 South America, North America, Asia, Europe, Middle East Buy Now
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