All,
I am using the TPS61200 low voltage synchronous boost converter to provide 4.1 volts from a .5 volt solar cell source. The device works great, but I would like to incorporate a simple low current draw LED indicator to let me know when the 4.00 volts is reached. So that if I do not have a meter, I would know the light source was significant enough to engage the device. Typically the converter needs greater than .5V to get started and then the output voltage jumps to 4.1 volts. I would like to incorporate either a momentary LED or one that would require that would only light if the voltage is at 4.00.
So basically - does anyone have a simple low current draw circuit that would light an LED only when the input voltage is greater than 4.00 volts?
I would also like to use all SMT parts to save space.
I apologize in advance if this is an easy question as this is only a hobby for me. I tried searching for this concept, but did not find an exact match on the forums.
Thanks,
Mike
I am using the TPS61200 low voltage synchronous boost converter to provide 4.1 volts from a .5 volt solar cell source. The device works great, but I would like to incorporate a simple low current draw LED indicator to let me know when the 4.00 volts is reached. So that if I do not have a meter, I would know the light source was significant enough to engage the device. Typically the converter needs greater than .5V to get started and then the output voltage jumps to 4.1 volts. I would like to incorporate either a momentary LED or one that would require that would only light if the voltage is at 4.00.
So basically - does anyone have a simple low current draw circuit that would light an LED only when the input voltage is greater than 4.00 volts?
I would also like to use all SMT parts to save space.
I apologize in advance if this is an easy question as this is only a hobby for me. I tried searching for this concept, but did not find an exact match on the forums.
Thanks,
Mike