K8061 analog output

The analog output from k8061 is 0-5 v or 0-10 v but only 5 mA. I like to use the analog output to control a LED light using 100 mA (3,5 V). I have seen on this board haw to use a MOSFET, but i like to turn up and down the light, is there anyone who has a solution

You may use an emitter follower:

many thanks, have you an idea of what the emitter Q1 can be

NPN darlington transistor TIP120 may be a good choice:
No heat sink needed:
Collector Dissipation (Ta=25°C) 2 W