iC-WJZ SO8

Laser Diode Driver

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Product description

The iC-WJ is a driver ICs for laser diodes in continuous and pulsed operation up to 300 kHz.

An external resistor at ISET is utilised to adapt the power control to the laser diode being used. The capacitor at CI determines the recovery time constants and the start-up time.

A watchdog circuit monitors the switching input IN. If IN remains low longer than preset by the capacitor at CWD, the capacitor of the power control is discharged at pin CI.

Features

  • Laser diode driver for continuous and pulsed operation (CW to 300 kHz) up to 250 mA
  • Averaging control of laser power
  • Simple adjustment of the laser power via external resistor
  • Adjustable watchdog at the switching input to protect the laser diode
  • Soft-start after power-on
  • Driver shutdown with overtemperature and undervoltage
  • Single 5 V supply
  • Simple circuitry
  • For laser diodes with 50 to 500 µA monitor current

Applications

  • General purpose laser diode drivers
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