iC-HTG – Laser Diode Driver
- CW operation with external driver transistor
- ACC mode configurable with shunt
- APC mode configurable with monitor diode
Description
The power CW laser diode driver iC-HTG provides Automatic Current (ACC) and 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.
Types and Packages
- iC-HTG QFN24-4×4, RoHS compliant MSL 1, 260°C
Features
- 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
Application
- Commercial VCSEL/LED/Laser diode modules
- Safety related CW laser diode drivers
- Structured-light 3D illumination
- Laser diode stack control
- Optical amplification, optical pumping
