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onsemi NCS21xR & NCV21xR Current Shunt Monitors

onsemi NCS21xR and NCV21xR Current Shunt Monitors are voltage output, current sense amplifiers that can measure voltage across shunts at common-mode voltages from -0.3V to +26V, independent of supply voltage. These devices feature zero-drift architecture with a low offset, enabling current sensing across the shunt with maximum voltage drop as low as 10mV full-scale. These devices can operate from a single +2.2V to +26V power supply, drawing a maximum of 150µA of supply current.

The NCS21xR and NCV21xR Current Shunt Monitor ICs are offered in compact SC70-6 and UQFN10 packages for design flexibility. The NCV21xR devices are AEC-Q100 Qualified for use in automotive applications.

Features

  • -0.3V to 26V Wide common-mode input range
  • ±35µV, ±100µV, or ±150µV max. Low offset voltage
  • 0.5µV/°C max. Low offset drift
  • 2.2V to 26V Supply voltage
  • High-side current sensing for high voltage systems
  • Low Ohm value current sense resistors
  • High accuracy over temperature leading to better power efficiency
  • Wide supply voltage range provides system flexibility

Applications

  • Power Monitoring
  • Power Adapters
  • LED Power Supply
  • Over Current Protection
  • Automotive
  • Closed Loop Feedback Circuits

Application Schematic Example

Schematic - onsemi NCS21xR & NCV21xR Current Shunt Monitors
Publicado: 2018-03-27 | Actualizado: 2023-08-03