2011658

The 2011658 is a Laser Diode Driver for continuous wave operation which requires only 4 external components. The wide supply range of 2.4 to 6V and the integrated reverse battery protection allow for battery operation with a minimum of 2 cells. A reversed battery connection destroys neither the IC nor the laser diode. The IC includes integrated circuitry protecting against destruction by ESD, excessive temperature and over current and a soft start which regulates the power supply is switched on. The IC also filters the laser diode power supply for transients. The power supply is regulated and adapted to the laser diode used by an external resistor at MDA. The monitor current acts as a reference and is regulated independent of the influence of temperature and supply voltage. The capacitor at CI determines the control time constants and start-up time.