iC-WJB SO8

2.7 V Laser Diode Driver

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Product description

The iC-WJB is a driver IC for laser diodes in continuous or pulsed operation of up to 300 kHz. The wide power supply range of 2.7 to 6 V and the integrated reverse battery protection allows for battery-operation with two to four AA/AAA cells.

An external resistor at ISET is employed to adapt the APC to the laser diode being used. The capacitor at CI determines the recovery time constants and the starting time.

A watchdog circuit monitors the switching input IN.

Features

  • Simple APC adjustment via an external resistor
  • Continuous (CW) or pulsed operation of up to 300 kHz
  • Laser diode current of up to 100 mA
  • Adjustable watchdog for input signals
  • Soft power-on and thermal protection
  • Driver shutdown in case of overtemperature and undervoltage
  • Operation at 2.7 to 6 V with two to four AA/AAA cells
  • Protection against reverse polarity

Applications

  • Battery supplied LD modules
  • LD Pointers
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