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This laser driver, ATLS4A214, is an electronic module that has all the valuable and important, but often difficult to achieve simultaneously, features simultaneously: wide input and output voltage range, high output current capability, high efficiency, low output noise (but it has an output 4mVpp ripple voltage at 500kHZ), wide modulation bandwidth, and small size.

Power Supply Voltage VPS Range: 5V～16V
Full Swing Output Voltage: 0V to VPS (input voltage)
Maximum Output Current: 4A
High Efficiency: 92% - no heat sink is needed(IOUT=4A@LDA=10V&VPS=15V) 
Wide Modulation Bandwidth: DC～10kHZDual Independent Current Set Ports
Direct Digital Modulation Control
Three Control States: Shutdown, Standby and Operation
Very Low Output Current Noise: < 12μA@0.1Hz~10Hz
High Current Stability: < ±600μA@4A &－20°C~80°C 
Low Output Ripple Voltage: < 4mV@500kHZ
Fully Shielded
Both DIP and SMT Packages Available
Compact Size: 27.4×21×5.7 (mm)
100 % Lead (Pb)-free and RoHS Compliant

For more detailed information, please check:

http://www.analogtechnologies.com/atls4a214.html

For more types of high voltage laser drivers, please check:

http://www.analogtechnologies.com/atlsxa214.html

http://www.analogtechnologies.com/laserdriver.html