iC-NT SO8

Light-Curtain Pulse Driver

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Product description

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.

Features

  • 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
  • Low standby current; circuit activation by input data
  • Low power requirement for external set resistor
  • Control logic with 3-step shift register
  • Compatible to CMOS levels
  • Data output buffer with built-in 120 Ohm wave impedance adaption
  • Single 5 V supply
  • Thermal shutdown and power-down reset
  • Suited for high-risk applications according to IEC 61496-1

Applications

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