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Diodes Incorporated ZXCT180 Low-/High-Side Current Monitors

Diodes Incorporated ZXCT180 Low-/High-Side Current Monitors are uni-directional current shunt monitors designed to address a 26V common mode and a small 2.7V to 5.5V supply voltage range powering the device. The Diodes Incorporated ZXCT180 supports small-signal bandwidths as high as 400kHz at 20V/V gain and fast large-signal slew rates of 2V/µs. This ability can detect rapid changes in the sensed current and fast response to the output, making the ZXCT180 a good choice for applications such as low-side motor control and system fault current detection.

The OUT pin is voltage-proportional to the load current. Based on OUT pin configurations, ZXCT180 has Pinout A and B as a flexibility for users to choose a proper one for PCB layout. In addition, these devices feature four fixed voltage gain options (20V/V, 50V/V, 100V/V, and 200V/V). ZXCT180 measures the voltage across shunts at common-mode voltages from -0.3V to 26V, independent of supply voltage with a maximum supply current of 370μA. All versions are AEC-Q100 grade 1 temperature range, -40°C to +125°C, and are offered in a SOT25 package.

Features

  • 2.7V to 5.5V supply voltage range
  • Wide -0.3V to 26V common-mode range
  • ±1% gain error (maximum over temperature)
  • Choice of gains:
    • 20V/V for pinout A1 and B1
    • 50V/V for pinout A2 and B2
    • 100V/V for pinout A3 and B3
    • 200V/V for pinout A4 and B4
  • Low ±100μV typical offset voltage, 1µV/°C drift
  • Rail-to-rail output capability
  • Low 370μA (maximum) quiescent current
  • 5-pin SOT25 package
  • ESD protection JESD 22, 5000V HBM (A114)
  • Totally lead-free and fully RoHS compliant
  • Halogen- and antimony-free, Green device

Applications

  • Motor controls
  • Lighting controls
  • Power management
  • Fault current detection
  • Current sensing (high-/low-side)
  • Solar inverters

Pin Assignments

Mechanical Drawing - Diodes Incorporated ZXCT180 Low-/High-Side Current Monitors

Typical Application

Application Circuit Diagram - Diodes Incorporated ZXCT180 Low-/High-Side Current Monitors

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Published: 2024-10-17 | Updated: 2024-11-05