IgorT
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phenol said:the datasheet limits Rin to 500ohms max...
Indeed it does. So what does that mean for this circuit?
phenol said:the datasheet limits Rin to 500ohms max...
my bad :-[phenol said:the datasheet limits Rin to 500ohms max...
So you finished this thing like an hour after we first talked about it?!? Shocked
I'm still shocked. I thought it was just meant as proof of concept (that it fits). So it would just work?!? With the LTC6106?
adgmeijin said:hey woop where did you get the parts of your boost driver? and how do you test the output and current using DMM?
woop said:what current do you need?
adgmeijin said:thanks Igort , actually i set an order for the sample of Dr. Lava's microflex boost driver, i think this may be the solution to make a pen laser with PHR803T LD on it.
phenol said:ok, suppose Rin=100R and Rout=10k, adjustable. We have a gain of 100. For Rsense=0.1R and Vref=190mV, the min I=1.9mV/0.1=19mA. The max current 6106 is capable of sourcing is 1mA, for 190mV this would be 190R for Rout min. If Rout min is 330R (Resistance of trimmer pot=0 + a fixed 330-R resistor), gain=3.3 and Imax=57.58mV/0.1 = 576mA.
Sounds good.
Transient response and stability have to be verified under all conditions, though.
thats what i was getting at.yes, by using different values for Rmin, Imax could be limited accordingly