This laser driver, ATLS25A219CH, is an electronic modulethat has all the valuable and important, but often difficult toachieve simultaneously, features: wide input and output voltagerange, high output current capability, high efficiency, low outputnoise (but it has an output 10mVp-p ripple voltage at 500kHz),wide modulation bandwidth, and small size. The wide outputvoltage range, 0.1×V_VPS ~ 0.8×V_VPS, allows driving one ormultiple serial laser diodes at the same time, for up to 25A wellcontrolled current at high efficiency.