iC-HTG QFN24-4x4

Power Laser Diode Driver

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Article description

Product description

The power CW laser diode driver iC-HTG provides Automatic Current (ACC) or Power (APC) Control functionality operating an external scalable driver. For APC, the programmable logarithmic monitor resistor ranges from 100 Ω to 500 kΩ at a step width <4%. The logarithmic D/A converter sets the operating point better than 1%. Overcurrent, overtemperature, or standby will disable the laser. An external DC/DC converter can be controlled to optimize the total power dissipation.


  • CW operation with external driver transistor
  • ACC mode configurable with shunt
  • APC mode configurable with monitor diode
  • 3.3 to 24 V power supply
  • Optimized for both N-type and P-type laser diodes
  • Analog modulation frequency of up to 50 kHz
  • Load current monitoring with shunt possible
  • Internal programmable logarithmic monitor resistor
  • Operating point setup with a 10 bit logarithmic resolution
  • Serial programming interface (SPI or I2C compliant)
  • Configuration content verifiable and activatable
  • A/D converters for analog signal monitoring
  • Low drop linear regulator for 3.3 V
  • Low current standby mode
  • Temperature monitor
  • Operational Temperature -40 to +85 °C


  • Commercial VCSEL/LED/Laser diode modules
  • Safety related CW laser diode drivers
  • Structured-light 3D illumination
  • Laser diode stack control
  • Optical amplification, optical pumping
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