IC-NZN QFN24-4X4 Laser diode driver, 300 mA, QFN-24

N-TYPE LASER DIODE DRIVER Laser diode pulse driver iC-NZN allows CW operation of laser diodes and spike-free switching with defined current pulses up to 155 MHz. The optical output power of the laser diode is set-up by means of an external resistor (RMD/PMD). For laser current control without a monitor diode, the laser current monitor at pin IMON is utilised. For high pulse frequencies the device can be switched into controlled burst mode. A previously settled operating point is maintained throughout the burst phase An averaging current monitor can be set by means of an external resistor at pin RSI. When the current limit is reached, overcurrent is signalled at NERR and thecurrent from pin LDA is limited to the pre-set value but the iC is not shut down. There is an additional current limitation in pin LDK that prevents the iC from overpowering the laser diode. Setting pin NSLP low, the iC enters a low consumption sleep-mode ( Features - peak value controlled laser diode driver for operation from CW up to 155 MHz - spike-free switching of laser currents of up to 300 mA - setting of laser power (APC) via external resistor - optional current control (ACC) - laser current limitation - LVDS/TTL switching input with TTL monitor output - low current consumption sleep-mode - safety shutdown with overtemperature - error signal output with overtemperature, undervoltage and overcurrent - all current LD types can be used (N/P/M configurations) - fast soft-start - blue laser diodes supported - strong suppression of transients with small external capacitors

Applications - pulsed and CW laser diode modules - laser diode pointers - laser levels - bar-code readers - distance measurement - blue laser diodes