I know that there are many LED Drivers out there but most of them are quite big / complex / expensive and don´t do what I need. (all of them do constant-current)
I want to drive a single coloured LED somewhere between 25mA and 100mA (the maximum current is fixed in the application but should be once configurable by some resistor, for example). The LED should shine "as bright as possible" over the range between 0 and 70 °C. So:
I saw the strong current derating of LEDs with temperature, so I could just use the current that is allowed after derating for +70°C over the complete range, but than I might (e.g.) just use 30mA all the time, where at 25°C temperatures, I could e.g. use 80mA and get out more of the LED.
So what I search for is something like a simple temperature controlled current source.
Any suggestions welcome! have a nice day!