Frequently we have to connect an high bright led to a power source fo example 12VDC.
An analog current source will not do well in this situations, consuming lots of power.
Therefore I like to have a simple switching power source based on a step down topology.
I'm sure it has been done already but I just cannot fount practical examples or circuit diagrams.
This time my powwer supply is 12VDC , the led has an current consumption of 150mA and a Fv of 2.6 Volts.
Could somene help out ?
Best regards
Robert Dugour