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Lava Micro FlexDrive Driver (lavadrive2) fits pens

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drlava

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Re: Lava Micro FlexDrive Driver (lavadrive2) fits

There is still a current ramp-up in these new ones, typically several milliseconds, there just isn't such a long delay for the circuit to get going anymore. This is a byproduct of the new chip :)
 



AdamR

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Re: Lava Micro FlexDrive Driver (lavadrive2) fits

merrr can't order :( "UK Maestro cards can't convert to USD"

Any chance of me paying with paypal?
 
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Re: Lava Micro FlexDrive Driver (lavadrive2) fits

How many amps/mA can it output at 3v?

EDIT: is 1A at 3v possible? :-?
 

Lol

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Re: Lava Micro FlexDrive Driver (lavadrive2) fits

Payment sent :)

Can't wait ;D
 

dr-ebert

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Re: Lava Micro FlexDrive Driver (lavadrive2) fits

The FlexDrive manual is available somewhere here, the specs are in there. Max output current is 1.5A, output voltage is 2.0-5.5V. So: 1A at 3V is no problem.
 
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Re: Lava Micro FlexDrive Driver (lavadrive2) fits

dr-ebert said:
The FlexDrive manual is available somewhere here, the specs are in there. Max output current is 1.5A, output voltage is 2.0-5.5V. So: 1A at 3V is no problem.
Ah yes, read the manual, and if I understand this correctly, if the input voltage is [ch8805] the output, it'll work no problem :D 1W RED HERE I COME!! :p
 

dr-ebert

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Re: Lava Micro FlexDrive Driver (lavadrive2) fits

Actually it's NOT a requirement that the input voltage is higher than the output voltage - it's a buck/boost circuit (or DC/DC converter). The only requirement (within the operating parameters) is that the power source has about 20% spare wattage (volts x amperes) above the load.
 
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Re: Lava Micro FlexDrive Driver (lavadrive2) fits

dr-ebert said:
Actually it's NOT a requirement that the input voltage is higher than the output voltage - it's a buck/boost circuit (or DC/DC converter). The only requirement (within the operating parameters) is that the power source has about 20% spare wattage (volts x amperes) above the load.
It says specifically (as an example) that it can't do 5V at 1A with 2V input. This led me to believe that at such high current the boost function doesn't... function.. :-/
 

dr-ebert

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Re: Lava Micro FlexDrive Driver (lavadrive2) fits

Yes, that'd require about 3A input current. The "rule of thumb" in the manual essentially means the input current should be below 1.2A. So the example you cite is way outside the "operating parameters", thus not possible. I guess the full set of possible input/output V/A combinations has some more limiting conditions (you'd need a 4-dimensional graph to plot the full set).
 
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Re: Lava Micro FlexDrive Driver (lavadrive2) fits

dr-ebert said:
Yes, that'd require about 3A input current. The "rule of thumb" in the manual essentially means the input current should be below 1.2A. So the example you cite is way outside the "operating parameters", thus not possible. I guess the full set of possible input/output V/A combinations has some more limiting conditions (you'd need a 4-dimensional graph to plot the full set).
Well, I don't understand all this lol. I'm going to be using 2x18650 batteries in parallel. This should be fine, yes?
 

PhotonSky

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Re: Lava Micro FlexDrive Driver (lavadrive2) fits

Thanks Dr.Lava these drivers ROCK!!!

I just recieved mine the shipping was a little slow but what can I say it ,was cheap shipping!  ;D

Soldering the wires on this is pretty annoying.

So in the end thanks Dr.Lava for selling these tiny great drivers for affordable prices and making them so tiny that will fit in almost any build!
 

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dr-ebert

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Re: Lava Micro FlexDrive Driver (lavadrive2) fits

HumanSymphony said:
Well, I don't understand all this lol. I'm going to be using 2x18650 batteries in parallel. This should be fine, yes?
That should work nicely for 3V/1A out. A heatsink for the 5-pin chip would be a good idea.
 
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Re: Lava Micro FlexDrive Driver (lavadrive2) fits

dr-ebert said:
[quote author=HumanSymphony link=1209418066/928#938 date=1238190667]
Well, I don't understand all this lol. I'm going to be using 2x18650 batteries in parallel. This should be fine, yes?
That should work nicely for 3V/1A out. A heatsink for the 5-pin chip would be a good idea.
[/quote]
Indeed. Must find something for that :p
 
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Re: Lava Micro FlexDrive Driver (lavadrive2) fits

Whoa I just saw the first page since I heard from the v4 :)

Good job, this driver is really small! Can it be even further optimized? Next version will be 0,5*0,4mm :p
 

PhotonSky

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Re: Lava Micro FlexDrive Driver (lavadrive2) fits

Niko said:
Whoa I just saw the first page since I heard from the v4 :)

Good job, this driver is really small! Can it be even further optimized? Next version will be 0,5*0,4mm :p
Heh 1mm by 1mm, price: YOUR SOUL!
 

Krutz

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Re: Lava Micro FlexDrive Driver (lavadrive2) fits

there are drivers that tiny, no joke! they get integrated *into* the can, like into a 5.6mm can! couldnt believe this at first, i read the datacheet, the laser-die isnt connected to the pins, there really is a driver inside a normally-looking can! sure, its no buck-boost as the flexdrive, the laserdiode itself is propably not much more than a pointer, but damn, amazing possibilities! one tiny lithium buttoncell, one 5.6mm can, that will be the tiniest pointer ever, at the time! :)
sorry, have no idea where i saw this..

manuel
 
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