kiyoukan
0
- Joined
- Oct 24, 2009
- Messages
- 2,555
- Points
- 48
I am looking at making a simple yet working linear driver.
My only things are.
I don't want to have to use high wattage resistors.
Able to go up to 2a.
Now i like the idea of the amc7135 but they are 600 short of my goal.
So i went on the hunt.
Now i can get any ic i could very well dream from ST micro for free.
So i was looking at what is the minimal i need to drive some nice high powered lasers.
The 445nm laser need at least 4.2V so i chose and output of 5V and at least 200ma.
That is correct that's the minimal needed current and power?
So upon my searching i have found a few ics but only one jumped out at me.
http://www.st.com/stonline/books/pdf/docs/4337.pdf
http://www.st.com/stonline/products/literature/ds/2142/l4941.pdf
it outpouts 5V at 500ma with a dropout of only 0.4v.
I was thinking of using this as i could mount one and get 500ma 2 and get 1000 and three to get 1500 and 4 to get 2000.
This board would look just like the amc7135s but with a little more power.
So what do you guys thing will this be able to handle and run off 2 cr123a 3.5v?
just found this super low dropout
http://www.analog.com/static/imported-files/Data_Sheets/ADP3338.pdf
My only things are.
I don't want to have to use high wattage resistors.
Able to go up to 2a.
Now i like the idea of the amc7135 but they are 600 short of my goal.
So i went on the hunt.
Now i can get any ic i could very well dream from ST micro for free.
So i was looking at what is the minimal i need to drive some nice high powered lasers.
The 445nm laser need at least 4.2V so i chose and output of 5V and at least 200ma.
That is correct that's the minimal needed current and power?
So upon my searching i have found a few ics but only one jumped out at me.
http://www.st.com/stonline/books/pdf/docs/4337.pdf
http://www.st.com/stonline/products/literature/ds/2142/l4941.pdf
it outpouts 5V at 500ma with a dropout of only 0.4v.
I was thinking of using this as i could mount one and get 500ma 2 and get 1000 and three to get 1500 and 4 to get 2000.
This board would look just like the amc7135s but with a little more power.
So what do you guys thing will this be able to handle and run off 2 cr123a 3.5v?
just found this super low dropout
http://www.analog.com/static/imported-files/Data_Sheets/ADP3338.pdf
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