LM2623 -0.8V~14Vin/1.24V~14Vout at 2 Amps

[Cheech]

Has any one looked at these yet

LM2623

General Purpose, Gated Oscillator Based, DC/DC Boost Converter
4mm x 4mm Thermally Enhanced LLP Package Option
LM2623 - General Purpose, Gated Oscillator Based, DC/DC Boost Converter

definately a group buy at 1000 pieces

or buy 1 for $2.31
Order LM2623 Power Management DC to DC Converter Parts Online, Download Datasheets, View Manufacturer Info at Avnet Express

 

[ChukiDori]

This does sound like a useful little gadget.

Id be interested in it.

Could you use this in place of an LM317 all things considered

 

[lasersbee]

This is a Boost DC/DC converter...
The LM317 is a Linear Regulator...
Not the same species...:cryyy:


Jerry

 

[ChukiDori]

Oh sorry. Just looking for options after no one at radio shack could help me with parts for an LM317 based circuit today ^_^

 

[Ramsey_innovations]

After reviewing the data sheet it appears that it does NOT regulate current at all. It's simply a DC/DC boost voltage regulator. For a moment I thought about possibly using it to feed an LM317, LM350 or LM1117 from a single lithium cell, but after looking at the efficiency vs. Vin graph it would not be very efficient at all with a Vin of 3.2v-4.2v and a Vout of 7.2v-9v (needed to feed an LMXXX) at any reasonable current needed to drive a 405nm or 445nm diode.

 

[lasersbee]

Oh sorry. Just looking for options after no one at radio shack could help me with parts for an LM317 based circuit today ^_^

Those who can..... do.
Those who can't... work at Radio Shack.....:eg:

Jerry

 

[LuxorLasers147]

What about this one: LM2940

I read that it had a 0.5 drop out voltage. But i looked at the pin configuration and its diferent from the lm317.

 

[chefla]

The LM2940 has a fixed voltage output. You can't use that one for a current regulator.
Look for: LM1085-ADJ, LMS1585-ADJ or similar types with a 1.25Vref. Then you can use the same formulas for calculating the current. If you are not sure post here or PM me.

 

[Meatball]

Those who can..... do.
Those who can't... work at Radio Shack.....:eg:

Jerry

Hey! I used to work there.

...and thank you my God that I don't anymore.

Does anyone need any PCB design done? I love working with circuit layouts.

 

[rhd]

You could use this to drive an STCS1 - might be a good combination