Laser driver

Discussion in 'Analog & Mixed-Signal Design' started by Zun, Jun 16, 2018.

Aug 6, 2017
72
0
Hello, i want to drive my 10 nm green laser diod,input 4v,output ,2v 393 MA, what suggest diagram for it,thank you

2. ericgibbs Moderator

Jan 29, 2010
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1,520
hi Zun,
Do you want to pulse the laser diode or continuous,?
I think you have a typo on the 10nm value, typically 532nm.
E

Aug 6, 2017
72
0
Yes Continue laser, typo, 10 mw,

OSRAM 10mw PLT5 510 515nm Green Laser Diode

Last edited by a moderator: Jun 17, 2018
4. ericgibbs Moderator

Jan 29, 2010
7,539
1,520

Aug 6, 2017
72
0
Ok

When this circuit
I just try this circuit, input 4.5 v, just got 280 MA, when input 6.5 v ,I got 400 MA, but this, I need 4.5 v only, for my friend level laser modifications,

https://laserpointerforums.com/atta...ll-3v-driver-info-request-driver-positive.jpg

How this

Last edited by a moderator: Jun 17, 2018
6. Bordodynov Well-Known Member

May 20, 2015
2,104
639
The operating voltage on this laser can reach 7 volts (see datasheet). The driver needs a supply voltage of 7.5 - 8 volts. The Chinese make a step-up converter (charge pump) to power the laser driver (for the finished laser modules). There is another system. This is when the current generator is fed by an infrared laser and nonlinear optics convert the IR into a green light. In this case, 3 volts is enough.

Aug 6, 2017
72
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I just buy a diod only, true laser diod

For fix to my level laser housing

Last edited by a moderator: Jun 17, 2018
8. ericgibbs Moderator

Jan 29, 2010
7,539
1,520
hi Zun,
The laser diode datasheet says operating current typical 60mA, 100mA max at 5.5v to 7v.
I would modify the simple circuit in post #5 to give 60mA at 6.5v
E

Aug 6, 2017
72
0

10. ian field AAC Fanatic!

Oct 27, 2012
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Just thought I'd mention in passing that green lasers are more dangerous to your eyes than red ones.