Laser Drivers

The function of a laser driver is to deliver the exact amount of current set, and at whatever voltage is needed, to the laser diode in a circuit. As a result, they protect the laser diode from damage. 


Laser driver applications

Laser drivers are used in a variety of applications, from diagnostic and analytical equipment in the medical field to welding.
 

Why does a diode need a laser current driver?

An often overlooked factor in using laser diodes in circuits is the influence of temperature on the output power and operating current. 


While the threshold current rises as the temperature increases, the optical output power and differential efficiency decrease. The driver circuit therefore needs a safety feature that ensures that a significant temperature increase will not destroy the laser – a laser driver fulfils this need.


Laser drivers provide closed-loop control of the average optical power of a continuous wave (CW) laser diode. The control loop adjusts the laser to maintain a constant current and power. This ensures a regular temperature and so protects the laser from heat damage. 


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Omschrijving Prijs Diode Types Driven Laser Type Driven Maximum Laser Diode Current Maximum Output Current Dimensions Package Type Number of Pins Length Maximum Supply Voltage Minimum Supply Voltage Width Power Dissipation Series Supply Voltage Range
RS-stocknr. 189-8876
FabrikantnummerMAX3736ETE+
FabrikantMaxim Integrated
€ 8,62
Each
Aantal stuks
- SFP 22 (Typ.)mA - 3 x 3 x 0.75mm QFN 16 3mm +6V -0.5V 3mm 2W - -0.5 → +6 V
RS-stocknr. 191-4278
FabrikantnummerMAX3738ETG+
FabrikantMaxim Integrated
€ 1,854
Each (In a Tube of 75)
Aantal stuks
- SFF, SFP - - 4.1 x 4.1 x 0.8mm QFN 24 4.1mm +6V -0.5V 4.1mm 2222mW - -0.5 → +6 V
RS-stocknr. 877-9114
FabrikantnummerADN2841ACPZ-48
FabrikantAnalog Devices
€ 26,26
Each
Aantal stuks
N Type Closed Loop 100mA 80mA 7.1 x 7.1 x 0.95mm - - 7.1mm 5.5V 4.5V 7.1mm - ADN28 4.5 → 5.5 V
RS-stocknr. 191-4721
FabrikantnummerMAX3738ETG+
FabrikantMaxim Integrated
€ 2,406
Each (In a Pack of 5)
Aantal stuks
- SFF, SFP - - 4.1 x 4.1 x 0.8mm QFN 24 4.1mm +6V -0.5V 4.1mm 2222mW - -0.5 → +6 V
RS-stocknr. 697-3541
FabrikantnummerEval Laser Driver Kit
FabrikantGlobal Laser
€ 123,08
Each
Aantal stuks
N Type CW 100mA - - - - - 5.5V dc 3.5V dc - - - 3.5 → 5.5 V dc
RS-stocknr. 697-3535
FabrikantnummerLaser Driver N Type
FabrikantGlobal Laser
€ 22,66
Each
Aantal stuks
N Type CW 60mA 2.5mA 6.5 x 20mm - - 6.5mm 6V dc 2.4V dc 20mm - - 2.4 → 6 V dc