Light-Curtain Pulse Driver

iC-NT is an LED pulse driver for light-curtain applications.

The device, which is controlled by a shift register logic, features an adjustable LED current-sink with a range of 0.4 to 1 A (at room temperature).

The decrease in LED efficiency with a rise in temperature is almost compensated by a positive temperature coefficient of the current sink. Since only one device is activated at a time, several iC-NT drivers may share one resistor, RSET, to define the LED current value.

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  • Adjustable LED pulse operation of 0.4 to 1 A
  • Controlled current slew rate enables short light pulses down to 1 µs
  • LED efficiency degradation compensated by positive current temperature coefficient


  • Light-curtain LED driver
  • Electro-sensitive protective equipment (ESPE)

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